Merge ~raharper/curtin:feature/block-discover into curtin:master

[Ryan Harper]

block-discover: add cli/API for exporting existing storage to config

Curtin can now probe an existing system for block devices and convert that
information into a storage_config yaml document representing the devices,
partitions, filesystems, etc as they would be if created from scratch.

This cli and API depend upon probert for discovery and
curtin.storage_config.validate_config to generate valid configs.

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:7c7d321faf6c1d53a976b5410acaa67bd7f286ee
https://jenkins.ubuntu.com/server/job/curtin-ci/1209/
Executed test runs:
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1209/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1209/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1209/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1209/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1209/rebuild

review: Needs Fixing (continuous-integration)

[Dan Watkins (oddbloke)]

Checkpointing my review before I dig in to the large block of added code line-by-line, and also to kick off a higher-level discussion so we can have that in parallel with my more detailed review:

In that large block of added code, it looks like the parse_* functions are using the same pattern (i.e. parse_foo calls foo_asdict, which then has some helpers). I wonder if we could reduce repeated code and make it a little more formally clear which functions are related to one another if we encapsulated this in a class structure. I'm thinking something like (using raid as the concrete example):

class ProbertParser:

    def parse(self, probe_data):
        configs = []
        errors = []
        for devname, data in probe_data.get(self.probe_data_key, {}).items():
            entry = self.asdict(data, probe_data)
            if entry:
                try:
                    validate_config(entry)
                except ValueError as e:
                    errors.append(e)
                    continue
                configs.append(entry)
        return (configs, errors)

class RaidProbertParser(ProbertParser):

    probe_data_key = 'raid'

    def asdict(self, data, probe_data):
        <the current raid_asdict code>

This pattern wouldn't work perfectly for every parse_* function, but the advantage of using classes is that only those objects that require something extraordinary from the parse method will redefine it (whereas currently you have to keep all the parse_* definitions in your head to effectively determine which ones are using the standard pattern and which are doing something different).

If it turns out that there isn't enough commonality between the parse_* functions to justify a method shared on the super-class, I still think class definitions would be a good way of encapsulating the functions that are required for a particular parse_* function, which would make the code easier to grok.

(
```
$ python -m this | tail -n1
Namespaces are one honking great idea -- let's do more of those!
```
;-)

[Dan Watkins (oddbloke)]

Another high-level comment: this MP doesn't appear to introduce any testing for the new functionality; am I missing something?

[Ryan Harper (raharper)]

The pattern is similar, there is some cross parsing helpers I'll need to sort out how that's shared, and while they all accept some form of probe_data, it does vary.

I'll look into classifying in the next iteration.

[Ryan Harper (raharper)]

> Another high-level comment: this MP doesn't appear to introduce any testing
> for the new functionality; am I missing something?

No, I've not written unittests yet. The work is mostly manually verified so
I'll need to get something more formal in the vmtest.

I was initially interested in comparing the input yaml to a vmtest with what we get
out of curtin block-discover after we boot into it; however some challenges include
that our input isn't strictly ordered in the same way as block-discover, for example

In our input file, we typically list all type:disks at the top and then add further dependent items like partitions, and curtin will ensure that an entries dependencies are ordered before, but something like a disk with a single partition may not be listed in the same spot.

Additionally the id: values are manually created when we defined the scenario, where as block-discover will auto-generate id values based on their type and underlying device:

We might have {type: disk, id: sda}, and discover would produce {type: disk: id: disk-sda}.

[Dan Watkins (oddbloke)]

(Checkpointing my review to respond to Ryan's comments; I've reached the top of parse_zfs.)

> The pattern is similar, there is some cross parsing helpers I'll need to sort out how that's shared, and while they all accept some form of probe_data, it does vary.

I think it's fine to keep shared helpers as module-level functions (unless they make more sense as methods to you, of course). If only shared helpers are in the module namespace then their presence there is meaningful.

> I'll look into classifying in the next iteration.

Thanks!

> I was initially interested in comparing the input yaml to a vmtest with what we get out of curtin block-discover after we boot into it; however some challenges include that our input isn't strictly ordered in the same way as block-discover, for example

I really like this idea. Given that block-discover is strictly ordered, we presumably _could_ get to a point where the vmtest input matches the output? I don't know a great deal about how the vmtests work, but if we had a flag that defaulted to False that indicated we should perform this test then we would be able to do this progressively.

(If we decide that integrating it in to the vmtests isn't worthwhile, a one-time pass capturing the probert output might make a solid starting point for unittests?)

[Dan Watkins (oddbloke)]

And I forgot to look at the inline comments.

[Dan Watkins (oddbloke)]

First review complete.

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:be6312b90287e055d4fb49e6be950bd2cda05d6f
https://jenkins.ubuntu.com/server/job/curtin-ci/1214/
Executed test runs:
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1214/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1214/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1214/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1214/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1214/rebuild

review: Needs Fixing (continuous-integration)

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:3c7d497a7ab503395c037a5be93afc830ccdd0af
https://jenkins.ubuntu.com/server/job/curtin-ci/1217/
Executed test runs:
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1217/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1217/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1217/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1217/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1217/rebuild

review: Needs Fixing (continuous-integration)

[Chad Smith (chad.smith)]

This is huge Ryan. Thanks for this heculean effort. I've commented on a few missed earlier review comments, pylint still doesn't work for me or CI it seems.

Any of my comments are included as changes in this pastebin http://paste.ubuntu.com/p/rVQRwwkzCM/

Note in the above pasebin a TODO for you to decide

If you are able to wrangle pylint to work I'm good on this branch.

review: Approve

[Ryan Harper (raharper)]

Thanks for the review Chad and the paste for quick apply. All of what you mentioned was worth fixing.

I dropped one comment around the volgroup name, specifically the presence of items in the 'volume_groups' dictionary will necessarily include a key, so we won't get None values for the volgroup field.

There may be no volume_groups at all, but we'll not call volgroup_asdict() without a valid one.

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:76b07426023f2c9698e07e82493d2ebed9acf9e1
https://jenkins.ubuntu.com/server/job/curtin-ci/1233/
Executed test runs:
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1233/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1233/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1233/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1233/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1233/rebuild

review: Needs Fixing (continuous-integration)

[Dan Watkins (oddbloke)]

Checkpointing my review here as I need to take a break. Made it as far as RaidParser.

[Dan Watkins (oddbloke)]

A few more additional inline thoughts; I've reviewed the entire available diff, but I believe that there are some changes that Launchpad isn't showing.

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:5b00d1550dd279afe1a5ca2bfcdefb5fec331f96
https://jenkins.ubuntu.com/server/job/curtin-ci/1238/
Executed test runs:
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1238/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1238/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1238/console
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1238/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1238/rebuild

review: Needs Fixing (continuous-integration)

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:8455eaba08beb88f594d5787593214a848cf9aa0
https://jenkins.ubuntu.com/server/job/curtin-ci/1239/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1239
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1239
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1239
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1239

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1239/rebuild

review: Approve (continuous-integration)

[Ryan Harper (raharper)]

Thanks for the review. I've accepted most of the changes. I couple of replies in-line for the ones I didn't.

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:d195cfeb8d000764da15bd3c47f80623cd413379
https://jenkins.ubuntu.com/server/job/curtin-ci/1240/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1240
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1240
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1240
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1240

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1240/rebuild

review: Approve (continuous-integration)

[Dan Watkins (oddbloke)]

Instead of saying thanks on all the inline changes, I'll say it here:
thanks!

On Wed, May 01, 2019 at 06:03:45PM -0000, Ryan Harper wrote:
> > + if self.probe_data_key in probe_data:
> > + data = self.probe_data.get(self.probe_data_key)
>
> In some of the probe types, we'll have keys set but empty, for example
> if probert found no lvm data on the system, we see things like:
>
> storage:
> lvm: {}
>
> And the datatype parser handles the lack of data.
>
> That said, if probe data had something like:
>
> storage:
> lvm: None
>
> We would blow up on non-dict type, so maybe in the base class I can
> check for none-ish values and set the attribute to {}.

Ah, OK, I see. I think that would be an improvement but it probably
isn't vital.

> > + if not self.blockdev_data:
> > + raise ValueError('probe_data missing valid "blockdev" data')
> > +
> > + def parse(self):
> > + raise NotImplementedError()
>
> Probably. What does subclassing from ABC get us over the above?

If a subclass hasn't overriden an abstract method, we will get the error
on instantiation of the class. With the NotImplementedError route, we
only get it once we call the missing method.

I don't think it's hugely important provided we have good test coverage
so we will catch any such missing methods, perhaps just something to
consider for the next time we do something like this.

(It also gives static analysis tools a bit more to work on, so they can
also tell you via your editor when you've failed to correctly subclass
an ABC.)

> > +
> > + def blockdev_byid_to_devname(self, link):
> > + """ Lookup blockdev by devlink and convert to storage_config id. """
> > + bd_key = self.lookup_devname(link)
> > + if bd_key:
> > + return self.blockdev_to_id(self.blockdev_data[bd_key])
> > + return None
> > +
> > +
> > +class BcacheParser(ProbertParser):
> > +
> > + probe_data_key = 'bcache'
> > +
> > + def __init__(self, probe_data):
> > + super(BcacheParser, self).__init__(probe_data)
> > + self.backing = self.bcache_data.get('backing', {})
> > + self.caching = self.bcache_data.get('caching', {})
> > +
> > + def parse(self):
> > + """parse probert 'bcache' data format.
> > +
> > + Collects storage config type: bcache for valid
> > + data and returns tuple of lists, configs, errors.
> > + """
> > + configs = []
> > + errors = []
> > + for dev_uuid, bdata in self.backing.items():
> > + entry = self.asdict(dev_uuid, bdata)
> > + if entry:
> > + try:
> > + validate_config(entry)
> > + except ValueError as e:
> > + errors.append(e)
> > + continue
> > + configs.append(entry)
> > + return (configs, errors)
> > +
> > + def asdict(self, backing_uuid, backing_data):
> > + """ process a specific bcache entry and return
> > + a curtin storage config dictionary. """
> > +
> > + def _sb_get(data, attr):
>
> I see what you're saying (TIL closures vs. anonymous f...

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:7590479541d48bb2c99f5e2195acd8d4165a8d3a
https://jenkins.ubuntu.com/server/job/curtin-ci/1243/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1243
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1243
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1243
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1243

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1243/rebuild

review: Approve (continuous-integration)

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:39bed997ba0b8b23526cfcdf7809c27f962b89af
https://jenkins.ubuntu.com/server/job/curtin-ci/1244/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1244
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1244
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1244
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1244

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1244/rebuild

review: Approve (continuous-integration)

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:9707655b6e2dade8fb57cbacd0a33bec99324e43
https://jenkins.ubuntu.com/server/job/curtin-ci/1255/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1255
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1255
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1255
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1255

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1255/rebuild

review: Approve (continuous-integration)

[Ryan Harper (raharper)]

OK. Full vmtest run revealed three issues that need fixing:

1) msdos partition table flags aren't getting set in exported storage-config (test_lvm.py reveals this)
2) msdos extended partition size is not calculated correctly
3) dm_crypt devices need parsing/handling (test_mdadm_bcache.py:TestAllindata)

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:61a7a9be8423fbf0321c591e559ec8114a0046d6
https://jenkins.ubuntu.com/server/job/curtin-ci/1262/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1262
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1262
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1262
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1262/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1262/rebuild

review: Needs Fixing (continuous-integration)

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:38bc731dee5920591a42150bffeae5655b02ef2a
https://jenkins.ubuntu.com/server/job/curtin-ci/1264/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1264
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1264
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1264
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1264

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1264/rebuild

review: Approve (continuous-integration)

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:56fcf047b1d25135c6d6d15426b6e0037f184718
https://jenkins.ubuntu.com/server/job/curtin-ci/1280/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1280
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1280
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1280
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1280/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1280/rebuild

review: Needs Fixing (continuous-integration)

[Server Team CI bot (server-team-bot)]

FAILED: Continuous integration, rev:56fcf047b1d25135c6d6d15426b6e0037f184718
https://jenkins.ubuntu.com/server/job/curtin-ci/1282/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1282
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1282
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1282
    FAILURE: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1282/console

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1282/rebuild

review: Needs Fixing (continuous-integration)

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:56fcf047b1d25135c6d6d15426b6e0037f184718
https://jenkins.ubuntu.com/server/job/curtin-ci/1283/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1283
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1283
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1283
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1283

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1283/rebuild

review: Approve (continuous-integration)

[Chad Smith (chad.smith)]

Thank you for the updates Ryan, a couple of nits, a one minor bug found I think.

[Ryan Harper (raharper)]

Thanks, I'll fix those up.

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:7a91b3192669514676f038f635c5f33731625782
https://jenkins.ubuntu.com/server/job/curtin-ci/1285/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/1285
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/1285
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/1285
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=torkoal/1285

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/curtin-ci/1285/rebuild

review: Approve (continuous-integration)

[Chad Smith (chad.smith)]

Thanks for the fixups. LGTM!

review: Approve

[Server Team CI bot (server-team-bot)]

Commit message lints:
 - Line #0 has 8 too many characters. Line starts with: "block-discover: add cli"...

review: Needs Fixing

[Ryan Harper (raharper)]

Fixed the commit message

[Server Team CI bot (server-team-bot)]

FAILED: Autolanding.
More details in the following jenkins job:
https://jenkins.ubuntu.com/server/job/curtin-autoland-test/191/
Executed test runs:
    None: https://jenkins.ubuntu.com/server/job/admin-lp-git-autoland/456/console

review: Needs Fixing (continuous-integration)

[Ryan Harper (raharper)]

Of course vmtest times out while landing.... trying again..

[Server Team CI bot (server-team-bot)]

review: Approve (continuous-integration)

diff --git a/curtin/block/__init__.py b/curtin/block/__init__.py
index f858b37..5d1b1bd 100644
--- a/curtin/block/__init__.py
+++ b/curtin/block/__init__.py
@@ -13,6 +13,7 @@ from curtin.block import lvm
 from curtin.block import multipath
 from curtin.log import LOG
 from curtin.udev import udevadm_settle, udevadm_info
+from curtin import storage_config
 
 
 def get_dev_name_entry(devname):
@@ -1099,4 +1100,29 @@ def get_supported_filesystems():
     return [l.split('\t')[1].strip()
             for l in util.load_file(proc_fs).splitlines()]
 
+
+def discover():
+    try:
+        LOG.debug('Importing probert prober')
+        from probert import prober
+    except Exception:
+        LOG.error('Failed to import probert, discover disabled')
+        return {}
+
+    probe = prober.Prober()
+    LOG.debug('Probing system for storage devices')
+    probe.probe_storage()
+    probe_data = probe.get_results()
+    if 'storage' not in probe_data:
+        raise ValueError('Probing storage failed')
+
+    LOG.debug('Extracting storage config from discovered devices')
+    try:
+        return storage_config.extract_storage_config(probe_data.get('storage'))
+    except ImportError as e:
+        LOG.exception(e)
+
+    return {}
+
+
 # vi: ts=4 expandtab syntax=python
diff --git a/curtin/block/schemas.py b/curtin/block/schemas.py
index 3761733..fb7507d 100644
--- a/curtin/block/schemas.py
+++ b/curtin/block/schemas.py
@@ -4,6 +4,9 @@ _uuid_pattern = (
     r'[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
 _path_dev = r'^/dev/[^/]+(/[^/]+)*$'
 _path_nondev = r'(^/$|^(/[^/]+)+$)'
+_fstypes = ['btrfs', 'ext2', 'ext3', 'ext4', 'fat', 'fat12', 'fat16', 'fat32',
+            'iso9660', 'vfat', 'jfs', 'ntfs', 'reiserfs', 'swap', 'xfs',
+            'zfsroot']
 
 definitions = {
     'id': {'type': 'string'},
@@ -11,19 +14,23 @@ definitions = {
     'devices': {'type': 'array', 'items': {'$ref': '#/definitions/ref_id'}},
     'name': {'type': 'string'},
     'preserve': {'type': 'boolean'},
-    'ptable': {'type': 'string', 'oneOf': [{'enum': ['gpt', 'msdos']}]},
+    'ptable': {'type': 'string', 'enum': ['dos', 'gpt', 'msdos']},
     'size': {'type': ['string', 'number'],
              'minimum': 1,
              'pattern': r'^([1-9]\d*(.\d+)?|\d+.\d+)(K|M|G|T)?B?'},
     'wipe': {
         'type': 'string',
-        'oneOf': [{'enum': ['random', 'superblock',
-                            'superblock-recursive', 'zero']}],
+        'enum': ['random', 'superblock', 'superblock-recursive', 'zero'],
     },
     'uuid': {
         'type': 'string',
         'pattern': _uuid_pattern,
     },
+    'fstype': {
+        'type': 'string',
+        'oneOf': [
+            {'pattern': r'^__.*__$'},  # XXX: Accept vmtest values?
+            {'enum': _fstypes}]},
     'params': {
         'type': 'object',
         'patternProperties': {
@@ -59,8 +66,39 @@ BCACHE = {
         'type': {'const': 'bcache'},
         'cache_mode': {
             'type': ['string'],
-            'oneOf': [{'enum': ['writethrough', 'writeback',
-                                'writearound', 'none']}],
+            'enum': ['writethrough', 'writeback', 'writearound', 'none'],
+        },
+    },
+}
+DASD = {
+    '$schema': 'http://json-schema.org/draft-07/schema#',
+    'name': 'CURTIN-DASD',
+    'title': 'curtin storage configuration for dasds',
+    'description': (
+        'Declarative syntax for specifying a dasd device.'),
+    'definitions': definitions,
+    'required': ['id', 'type', 'device_id'],
+    'type': 'object',
+    'additionalProperties': False,
+    'properties': {
+        'id': {'$ref': '#/definitions/id'},
+        'name': {'$ref': '#/definitions/name'},
+        'preserve': {'$ref': '#/definitions/preserve'},
+        'type': {'const': 'dasd'},
+        'blocksize': {
+            'type': ['integer', 'string'],
+            'oneOf': [{'enum': [512, 1024, 2048, 4096]},
+                      {'enum': ['512', '1024', '2048', '4096']}],
+        },
+        'device_id': {'type': 'string'},
+        'label': {'type': 'string', 'maxLength': 6},
+        'mode': {
+            'type': ['string'],
+            'enum': ['expand', 'full', 'quick'],
+        },
+        'disk_layout': {
+            'type': ['string'],
+            'enum': ['cdl', 'ldl'],
         },
     },
 }
@@ -93,7 +131,12 @@ DISK = {
                 {'pattern': r'^iscsi:.*'}],
         },
         'model': {'type': 'string'},
-        'wwn': {'type': 'string', 'pattern': r'^0x(\d|[a-zA-Z])+'},
+        'wwn': {
+            'type': 'string',
+            'oneOf': [
+                {'pattern': r'^0x(\d|[a-zA-Z])+'},
+                {'pattern': r'^nvme\.(\d|[a-zA-Z]-)+'}],
+        },
         'grub_device': {
             'type': ['boolean', 'integer'],
             'minimum': 0,
@@ -137,13 +180,7 @@ FORMAT = {
         'preserve': {'$ref': '#/definitions/preserve'},
         'uuid': {'$ref': '#/definitions/uuid'},    # XXX: This is not used
         'type': {'const': 'format'},
-        'fstype': {
-            'type': 'string',
-            'oneOf': [
-                {'pattern': r'^__.*__$'},  # XXX: Accept vmtest values?
-                {'enum': ['btrfs', 'ext2', 'ext3', 'ext4', 'fat', 'fat12',
-                          'fat16', 'fat32', 'vfat', 'jfs', 'ntfs', 'reiserfs',
-                          'swap', 'xfs', 'zfsroot']}]},
+        'fstype': {'$ref': '#/definitions/fstype'},
         'label': {'type': 'string'},
         'volume': {'$ref': '#/definitions/ref_id'},
     }
@@ -240,9 +277,9 @@ PARTITION = {
                    'minimum': 1},
         'device': {'$ref': '#/definitions/ref_id'},
         'flag': {'type': 'string',
-                 'oneOf': [
-                    {'enum': ['bios_grub', 'boot', 'extended', 'home',
-                              'logical', 'lvm', 'prep', 'raid', 'swap', '']}]},
+                 'enum': ['bios_grub', 'boot', 'extended', 'home', 'linux',
+                          'logical', 'lvm', 'mbr', 'prep', 'raid', 'swap',
+                          '']},
     }
 }
 RAID = {
diff --git a/curtin/block/zfs.py b/curtin/block/zfs.py
index 5615144..dce15c3 100644
--- a/curtin/block/zfs.py
+++ b/curtin/block/zfs.py
@@ -158,6 +158,10 @@ def zpool_create(poolname, vdevs, mountpoint=None, altroot=None,
     cmd = ["zpool", "create"] + options + [poolname] + vdevs
     util.subp(cmd, capture=True)
 
+    # Trigger generation of zpool.cache file
+    cmd = ["zpool", "set", "cachefile=/etc/zfs/zpool.cache", poolname]
+    util.subp(cmd, capture=True)
+
 
 def zfs_create(poolname, volume, zfs_properties=None):
     """
diff --git a/curtin/commands/block_discover.py b/curtin/commands/block_discover.py
new file mode 100644
index 0000000..f309970
--- /dev/null
+++ b/curtin/commands/block_discover.py
@@ -0,0 +1,20 @@
+# This file is part of curtin. See LICENSE file for copyright and license info.
+
+import json
+from . import populate_one_subcmd
+from curtin import block
+
+
+def block_discover_main(args):
+    """probe for existing devices and emit Curtin storage config output."""
+
+    print(json.dumps(block.discover(), indent=2, sort_keys=True))
+
+
+CMD_ARGUMENTS = ()
+
+
+def POPULATE_SUBCMD(parser):
+    populate_one_subcmd(parser, CMD_ARGUMENTS, block_discover_main)
+
+# vi: ts=4 expandtab syntax=python
diff --git a/curtin/commands/curthooks.py b/curtin/commands/curthooks.py
index 7d9cc9f..75f5083 100644
--- a/curtin/commands/curthooks.py
+++ b/curtin/commands/curthooks.py
@@ -586,6 +586,14 @@ def copy_mdadm_conf(mdadm_conf, target):
                 'etc/mdadm/mdadm.conf']))
 
 
+def copy_zpool_cache(zpool_cache, target):
+    if not zpool_cache:
+        LOG.warn("zpool_cache path must be specified, not copying")
+        return
+
+    shutil.copy(zpool_cache, os.path.sep.join([target, 'etc/zfs']))
+
+
 def apply_networking(target, state):
     netconf = state.get('network_config')
     interfaces = state.get('interfaces')
@@ -1366,6 +1374,11 @@ def builtin_curthooks(cfg, target, state):
         handle_pollinate_user_agent(cfg, target)
 
     if osfamily == DISTROS.debian:
+        # check for the zpool cache file and copy to target if present
+        zpool_cache = '/etc/zfs/zpool.cache'
+        if os.path.exists(zpool_cache):
+            copy_zpool_cache(zpool_cache, target)
+
         # If a crypttab file was created by block_meta than it needs to be
         # copied onto the target system, and update_initramfs() needs to be
         # run, so that the cryptsetup hooks are properly configured on the
diff --git a/curtin/commands/main.py b/curtin/commands/main.py
index 150f1e2..df97b7d 100644
--- a/curtin/commands/main.py
+++ b/curtin/commands/main.py
@@ -15,8 +15,8 @@ VERSIONSTR = version.version_string()
 
 SUB_COMMAND_MODULES = [
     'apply_net', 'apt-config', 'block-attach-iscsi', 'block-detach-iscsi',
-    'block-info', 'block-meta', 'block-wipe', 'clear-holders', 'curthooks',
-    'collect-logs', 'extract', 'features',
+    'block-discover', 'block-info', 'block-meta', 'block-wipe',
+    'clear-holders', 'curthooks', 'collect-logs', 'extract', 'features',
     'hook', 'install', 'mkfs', 'in-target', 'net-meta', 'pack',
     'schema-validate', 'swap', 'system-install', 'system-upgrade',
     'unmount', 'version',
diff --git a/curtin/deps/__init__.py b/curtin/deps/__init__.py
index 96df4f6..37c4469 100644
--- a/curtin/deps/__init__.py
+++ b/curtin/deps/__init__.py
@@ -16,6 +16,7 @@ from curtin.distro import install_packages, lsb_release
 REQUIRED_IMPORTS = [
     # import string to execute, python2 package, python3 package
     ('import yaml', 'python-yaml', 'python3-yaml'),
+    ('import pyudev', 'python-pyudev', 'python3-pyudev'),
 ]
 
 REQUIRED_EXECUTABLES = [
diff --git a/curtin/pack.py b/curtin/pack.py
index 11430e9..1dd42fb 100644
--- a/curtin/pack.py
+++ b/curtin/pack.py
@@ -107,6 +107,13 @@ def pack(fdout=None, command=None, paths=None, copy_files=None,
     if copy_files is None:
         copy_files = []
 
+    try:
+        from probert import prober
+        psource = os.path.dirname(prober.__file__)
+        copy_files.append(('probert', psource),)
+    except Exception:
+        pass
+
     tmpd = None
     try:
         tmpd = tempfile.mkdtemp()
diff --git a/curtin/storage_config.py b/curtin/storage_config.py
index ce05a09..a79f30b 100644
--- a/curtin/storage_config.py
+++ b/curtin/storage_config.py
@@ -1,15 +1,21 @@
 # This file is part of curtin. See LICENSE file for copyright and license info.
-import copy
 from collections import namedtuple, OrderedDict
+import copy
+import operator
+import os
+import re
+import yaml
 
 from curtin.log import LOG
 from curtin.block import schemas
 from curtin import config as curtin_config
+from curtin import util
 
 
 StorageConfig = namedtuple('StorageConfig', ('type', 'schema'))
 STORAGE_CONFIG_TYPES = {
     'bcache': StorageConfig(type='bcache', schema=schemas.BCACHE),
+    'dasd': StorageConfig(type='dasd', schema=schemas.DASD),
     'disk': StorageConfig(type='disk', schema=schemas.DISK),
     'dm_crypt': StorageConfig(type='dm_crypt', schema=schemas.DM_CRYPT),
     'format': StorageConfig(type='format', schema=schemas.FORMAT),
@@ -62,14 +68,19 @@ def load_and_validate(config_path):
         LOG.info('Skipping %s, missing "storage" key' % config_path)
         return
 
-    return validate_config(config.get('storage'))
+    return validate_config(config.get('storage'), sourcefile=config_path)
 
 
-def validate_config(config):
+def validate_config(config, sourcefile=None):
     """Validate storage config object."""
+    if not sourcefile:
+        sourcefile = ''
     try:
         import jsonschema
         jsonschema.validate(config, STORAGE_CONFIG_SCHEMA)
+    except ImportError:
+        LOG.error('Cannot validate storage config, missing jsonschema')
+        raise
     except jsonschema.exceptions.ValidationError as e:
         if isinstance(e.instance, int):
             msg = 'Unexpected value (%s) for property "%s"' % (e.path[0],
@@ -85,7 +96,8 @@ def validate_config(config):
             try:
                 jsonschema.validate(e.instance, stype.schema)
             except jsonschema.exceptions.ValidationError as f:
-                msg = "%s in %s" % (f.message, e.instance)
+                msg = "%s in %s\n%s" % (f.message, sourcefile,
+                                        util.json_dumps(e.instance))
                 raise(ValueError(msg))
         else:
             msg = "Unknown storage type: %s in %s" % (instance_type,
@@ -112,21 +124,43 @@ def _stype_to_deps(stype):
     """
 
     depends_keys = {
-        'bcache': set('backing_device', 'cache_device'),
-        'disk': set(),
-        'dm_crypt': set('volume'),
-        'format': set('volume'),
-        'lvm_partition': set('volgroup'),
-        'lvm_volgroup': set('devices'),
-        'mount': set('device'),
-        'partition': set('device'),
-        'raid': set('devices', 'spare_devices'),
-        'zfs': set('pool'),
-        'zpool': set('vdevs'),
+        'bcache': {'backing_device', 'cache_device'},
+        'dasd': set(),
+        'disk': {'device_id'},
+        'dm_crypt': {'volume'},
+        'format': {'volume'},
+        'lvm_partition': {'volgroup'},
+        'lvm_volgroup': {'devices'},
+        'mount': {'device'},
+        'partition': {'device'},
+        'raid': {'devices', 'spare_devices'},
+        'zfs': {'pool'},
+        'zpool': {'vdevs'},
     }
     return depends_keys[stype]
 
 
+def _stype_to_order_key(stype):
+    default_sort = {'id'}
+    order_key = {
+        'bcache': {'name'},
+        'disk': default_sort,
+        'dm_crypt': default_sort,
+        'format': default_sort,
+        'lvm_partition': {'name'},
+        'lvm_volgroup': {'name'},
+        'mount': {'path'},
+        'partition': {'number'},
+        'raid': default_sort,
+        'zfs': {'volume'},
+        'zpool': default_sort,
+    }
+    if stype not in order_key:
+        raise ValueError('Unknown storage type: %s' % stype)
+
+    return order_key.get(stype)
+
+
 # Document what each storage type can be composed from.
 def _validate_dep_type(source_id, dep_key, dep_id, sconfig):
     '''check if dependency type is in the list of allowed by source'''
@@ -135,7 +169,8 @@ def _validate_dep_type(source_id, dep_key, dep_id, sconfig):
     depends = {
         'bcache': {'bcache', 'disk', 'dm_crypt', 'lvm_partition',
                    'partition', 'raid'},
-        'disk': {},
+        'dasd': {},
+        'disk': {'device_id'},
         'dm_crypt': {'bcache', 'disk', 'dm_crypt', 'lvm_partition',
                      'partition', 'raid'},
         'format': {'bcache', 'disk', 'dm_crypt', 'lvm_partition',
@@ -143,7 +178,7 @@ def _validate_dep_type(source_id, dep_key, dep_id, sconfig):
         'lvm_partition': {'lvm_volgroup'},
         'lvm_volgroup': {'bcache', 'disk', 'dm_crypt', 'partition', 'raid'},
         'mount': {'format'},
-        'partition': {'bcache', 'disk', 'raid'},
+        'partition': {'bcache', 'disk', 'raid', 'partition'},
         'raid': {'bcache', 'disk', 'dm_crypt', 'lvm_partition',
                  'partition'},
         'zfs': {'zpool'},
@@ -166,8 +201,9 @@ def _validate_dep_type(source_id, dep_key, dep_id, sconfig):
 
     source_deps = depends[source_type]
     result = dep_type in source_deps
-    LOG.debug('Validate: SourceType:%s -> (DepId:%s DepType:%s) in '
-              'SourceDeps:%s ? result=%s' % (source_type, dep_id, dep_type,
+    LOG.debug('Validate: %s:SourceType:%s -> (DepId:%s DepType:%s) in '
+              'SourceDeps:%s ? result=%s' % (source_id, source_type,
+                                             dep_id, dep_type,
                                              source_deps, result))
     if not result:
         # Partition(sda1).device -> Partition(sda3)
@@ -190,8 +226,13 @@ def find_item_dependencies(item_id, config, validate=True):
     if not item_cfg:
         return None
 
+    def _find_same_dep(dep_key, dep_value, config):
+        return [item_id for item_id, item_cfg in config.items()
+                if item_cfg.get(dep_key) == dep_value]
+
     deps = []
     item_type = item_cfg.get('type')
+    item_order = _stype_to_order_key(item_type)
     for dep_key in _stype_to_deps(item_type):
         if dep_key in item_cfg:
             dep_value = item_cfg[dep_key]
@@ -202,9 +243,20 @@ def find_item_dependencies(item_id, config, validate=True):
                 if validate:
                     _validate_dep_type(item_id, dep_key, dep, config)
 
-                d = find_item_dependencies(dep, config)
-                if d:
-                    deps.extend(d)
+                # find other items with the same dep_key, dep_value
+                same_deps = _find_same_dep(dep_key, dep, config)
+                sdeps_cfgs = [cfg for sdep, cfg in config.items()
+                              if sdep in same_deps]
+                sorted_deps = (
+                    sorted(sdeps_cfgs,
+                           key=operator.itemgetter(*list(item_order))))
+                for sdep in sorted_deps:
+                    deps.append(sdep['id'])
+
+                # find lower level deps
+                lower_deps = find_item_dependencies(dep, config)
+                if lower_deps:
+                    deps.extend(lower_deps)
 
     return deps
 
@@ -255,9 +307,35 @@ def merge_config_trees_to_list(config_trees):
             raise ValueError('Duplicate id: %s' % top_item_id)
         reg[top_item_id] = {'level': level, 'config': item_cfg}
 
+    def sort_level(configs):
+        sreg = {}
+        for cfg in configs:
+            if cfg['type'] in sreg:
+                sreg[cfg['type']].append(cfg)
+            else:
+                sreg[cfg['type']] = [cfg]
+
+        result = []
+        for item_type in sorted(sreg.keys()):
+            iorder = _stype_to_order_key(item_type)
+            isorted = sorted(sreg[item_type],
+                             key=operator.itemgetter(*list(iorder)))
+            result.extend(isorted)
+
+        return result
+
     # [entry for tag in tags]
-    return [entry['config'] for lvl in range(0, max_level + 1)
-            for _, entry in reg.items() if entry['level'] == lvl]
+    merged = []
+    for lvl in range(0, max_level + 1):
+        level_configs = []
+        for item_id, entry in reg.items():
+            if entry['level'] == lvl:
+                level_configs.append(entry['config'])
+
+        sconfigs = sort_level(level_configs)
+        merged.extend(sconfigs)
+
+    return merged
 
 
 def config_tree_to_list(config_tree):
@@ -283,4 +361,825 @@ def extract_storage_ordered_dict(config):
     # its index and the component of storage_config as its value
     return OrderedDict((d["id"], d) for d in scfg)
 
+
+class ProbertParser(object):
+    """ Base class for parsing probert storage configuration.
+
+        This will hold common methods of the various storage type
+        parsers.
+    """
+    # In subclasses 'probe_data_key' value will select a subset of
+    # Probert probe_data if the value is present.  If the probe_data
+    # is incomplete, we raise a ValuError. This selection  allows the
+    # subclass to handle parsing one portion of the data and will be
+    # accessed in the subclass via 'class_data' member.
+    probe_data_key = None
+    class_data = None
+
+    def __init__(self, probe_data):
+        if not probe_data or not isinstance(probe_data, dict):
+            raise ValueError('Invalid probe_data: %s' % probe_data)
+
+        self.probe_data = probe_data
+        if self.probe_data_key is not None:
+            if self.probe_data_key in probe_data:
+                data = self.probe_data.get(self.probe_data_key)
+                if not data:
+                    data = {}
+                self.class_data = data
+            else:
+                raise ValueError('probe_data missing %s data' %
+                                 self.probe_data_key)
+
+        # We keep a reference to the blockdev_data on the superclass
+        # as each specific parser has common needs to reference
+        # this data separate from the BlockdevParser class.
+        self.blockdev_data = self.probe_data.get('blockdev')
+        if not self.blockdev_data:
+            raise ValueError('probe_data missing valid "blockdev" data')
+
+    def parse(self):
+        raise NotImplementedError()
+
+    def asdict(self, data):
+        raise NotImplementedError()
+
+    def lookup_devname(self, devname):
+        """ Search 'blockdev' space for "devname".  The device
+            name may not be a kernel name, so if not found in
+            the dictionary keys, search under 'DEVLINKS' of each
+            device and return the dictionary for the kernel.
+        """
+        if devname in self.blockdev_data:
+            return devname
+
+        for bd_key, bdata in self.blockdev_data.items():
+            devlinks = bdata.get('DEVLINKS', '').split()
+            if devname in devlinks:
+                return bd_key
+
+        return None
+
+    def blockdev_to_id(self, blockdev):
+        """ Examine a blockdev dictionary and return a tuple of curtin
+            storage type and name that can be used as a value for
+            storage_config ids (opaque reference to other storage_config
+            elements).
+        """
+        def is_mpath(blockdev):
+            return bool(blockdev.get('DM_UUID', '').startswith('mpath-'))
+
+        def is_dmcrypt(blockdev):
+            return bool(blockdev.get('DM_UUID', '').startswith('CRYPT-LUKS'))
+
+        devtype = blockdev.get('DEVTYPE', 'MISSING')
+        devname = blockdev.get('DEVNAME', 'MISSING')
+        name = os.path.basename(devname)
+        if devname.startswith('/dev/dm-'):
+            # device mapper names are composed deviecs, let's
+            # look at udev data to see what it's really
+            if 'DM_LV_NAME' in blockdev:
+                devtype = 'lvm-partition'
+                name = blockdev['DM_LV_NAME']
+            elif is_mpath(blockdev):
+                name = blockdev['DM_UUID']
+            elif is_dmcrypt(blockdev):
+                devtype = 'dmcrypt'
+                name = blockdev['DM_NAME']
+        elif devname.startswith('/dev/md'):
+            if 'MD_NAME' in blockdev:
+                devtype = 'raid'
+
+        for key, val in {'name': name, 'devtype': devtype}.items():
+            if not val or val == 'MISSING':
+                msg = 'Failed to extract %s data: %s' % (key, blockdev)
+                raise ValueError(msg)
+
+        return "%s-%s" % (devtype, name)
+
+    def blockdev_byid_to_devname(self, link):
+        """ Lookup blockdev by devlink and convert to storage_config id. """
+        bd_key = self.lookup_devname(link)
+        if bd_key:
+            return self.blockdev_to_id(self.blockdev_data[bd_key])
+        return None
+
+
+class BcacheParser(ProbertParser):
+
+    probe_data_key = 'bcache'
+
+    def __init__(self, probe_data):
+        super(BcacheParser, self).__init__(probe_data)
+        self.backing = self.class_data.get('backing', {})
+        self.caching = self.class_data.get('caching', {})
+
+    def parse(self):
+        """parse probert 'bcache' data format.
+
+           Collects storage config type: bcache for valid
+           data and returns tuple of lists, configs, errors.
+        """
+        configs = []
+        errors = []
+        for dev_uuid, bdata in self.backing.items():
+            entry = self.asdict(dev_uuid, bdata)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+    def asdict(self, backing_uuid, backing_data):
+        """ process a specific bcache entry and return
+            a curtin storage config dictionary. """
+
+        def _sb_get(data, attr):
+            return data.get('superblock', {}).get(attr)
+
+        def _find_cache_device(backing_data, cache_data):
+            cset_uuid = _sb_get(backing_data, 'cset.uuid')
+            msg = ('Invalid "blockdev" value for cache device '
+                   'uuid=%s' % cset_uuid)
+            if not cset_uuid:
+                raise ValueError(msg)
+
+            for devuuid, config in cache_data.items():
+                cache = _sb_get(config, 'cset.uuid')
+                if cache == cset_uuid:
+                    return config['blockdev']
+
+            return None
+
+        def _find_bcache_devname(uuid, backing_data, blockdev_data):
+            by_uuid = '/dev/bcache/by-uuid/' + uuid
+            label = _sb_get(backing_data, 'dev.label')
+            for devname, data in blockdev_data.items():
+                if devname.startswith('/dev/bcache'):
+                    # DEVLINKS is a space separated list
+                    devlinks = data.get('DEVLINKS', '').split()
+                    if by_uuid in devlinks:
+                        return devname
+            if label:
+                return label
+            raise ValueError('Failed to find bcache %s ' % (by_uuid))
+
+        def _cache_mode(dev_data):
+            # "1 [writeback]" -> "writeback"
+            attr = _sb_get(dev_data, 'dev.data.cache_mode')
+            if attr:
+                return attr.split()[1][1:-1]
+
+            return None
+
+        backing_device = backing_data.get('blockdev')
+        cache_device = _find_cache_device(backing_data, self.caching)
+        cache_mode = _cache_mode(backing_data)
+        bcache_name = os.path.basename(
+            _find_bcache_devname(backing_uuid, backing_data,
+                                 self.blockdev_data))
+        bcache_entry = {'type': 'bcache', 'id': 'disk-%s' % bcache_name,
+                        'name': bcache_name}
+
+        if cache_mode:
+            bcache_entry['cache_mode'] = cache_mode
+        if backing_device:
+            bcache_entry['backing_device'] = self.blockdev_to_id(
+                self.blockdev_data[backing_device])
+
+        if cache_device:
+            bcache_entry['cache_device'] = self.blockdev_to_id(
+                self.blockdev_data[cache_device])
+
+        return bcache_entry
+
+
+class BlockdevParser(ProbertParser):
+
+    probe_data_key = 'blockdev'
+
+    def parse(self):
+        """ parse probert 'blockdev' data format.
+
+            returns tuple with list of blockdev entries converted to
+            storage config and any validation errors.
+        """
+        configs = []
+        errors = []
+
+        for devname, data in self.blockdev_data.items():
+            # skip composed devices here
+            if data.get('DEVPATH', '').startswith('/devices/virtual'):
+                continue
+            entry = self.asdict(data)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+    def ptable_uuid_to_flag_entry(self, guid):
+        # map
+        # https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
+        # to
+        # curtin/commands/block_meta.py:partition_handler()sgdisk_flags/types
+        guid_map = {
+            'C12A7328-F81F-11D2-BA4B-00A0C93EC93B': ('boot', 'EF00'),
+            '21686148-6449-6E6F-744E-656564454649': ('bios_grub', 'EF02'),
+            '933AC7E1-2EB4-4F13-B844-0E14E2AEF915': ('home', '8302'),
+            '0FC63DAF-8483-4772-8E79-3D69D8477DE4': ('linux', '8300'),
+            'E6D6D379-F507-44C2-A23C-238F2A3DF928': ('lvm', '8e00'),
+            '024DEE41-33E7-11D3-9D69-0008C781F39F': ('mbr', ''),
+            '9E1A2D38-C612-4316-AA26-8B49521E5A8B': ('prep', '4200'),
+            'A19D880F-05FC-4D3B-A006-743F0F84911E': ('raid', 'fd00'),
+            '0657FD6D-A4AB-43C4-84E5-0933C84B4F4F': ('swap', '8200'),
+            '0X83': ('linux', '83'),
+            '0XF': ('extended', 'f'),
+        }
+        name = code = None
+        if guid and guid.upper() in guid_map:
+            name, code = guid_map[guid.upper()]
+
+        return (name, code)
+
+    def get_unique_ids(self, blockdev):
+        """ extract preferred ID_* keys for www and serial values.
+
+            In some cases, ID_ values have duplicate values, this
+            method returns the preferred value for a specific
+            blockdev attribute.
+        """
+        uniq = {}
+        source_keys = {
+            'wwn': ['ID_WWN_WITH_EXTENSION', 'ID_WWN'],
+            'serial': ['ID_SERIAL', 'ID_SERIAL_SHORT'],
+        }
+        for skey, id_keys in source_keys.items():
+            for id_key in id_keys:
+                if id_key in blockdev and skey not in uniq:
+                    uniq[skey] = blockdev[id_key]
+
+        return uniq
+
+    def partition_parent_devname(self, blockdev):
+        """ Return the devname of a partition's parent.
+        md0p1 -> /dev/md0
+        vda1 -> /dev/vda
+        nvme0n1p3 -> /dev/nvme0n1
+        """
+        if blockdev['DEVTYPE'] != "partition":
+            raise ValueError('Invalid blockdev, DEVTYPE is not partition')
+
+        pdevpath = blockdev.get('DEVPATH')
+        if pdevpath:
+            return '/dev/' + os.path.basename(os.path.dirname(pdevpath))
+
+    def asdict(self, blockdev_data):
+        """ process blockdev_data and return a curtin
+            storage config dictionary.  This method
+            will return curtin storage types: disk, partition.
+        """
+        # just disks and partitions
+        if blockdev_data['DEVTYPE'] not in ["disk", "partition"]:
+            return None
+
+        # https://www.kernel.org/doc/Documentation/admin-guide/devices.txt
+        # Ignore Floppy (block MAJOR=2), CDROM (block MAJOR=11)
+        # XXX: Possible expansion on this in the future.
+        if blockdev_data['MAJOR'] in ["11", "2"]:
+            return None
+
+        devname = blockdev_data.get('DEVNAME')
+        entry = {
+            'type': blockdev_data['DEVTYPE'],
+            'id': self.blockdev_to_id(blockdev_data),
+        }
+
+        # default disks to gpt
+        if entry['type'] == 'disk':
+            uniq_ids = self.get_unique_ids(blockdev_data)
+            # always include path, block_meta will prefer wwn/serial over path
+            uniq_ids.update({'path': devname})
+            # set wwn, serial, and path
+            entry.update(uniq_ids)
+
+            # default to gpt if not present
+            entry['ptable'] = blockdev_data.get('ID_PART_TABLE_TYPE', 'gpt')
+            return entry
+
+        if entry['type'] == 'partition':
+            attrs = blockdev_data['attrs']
+            entry['number'] = int(attrs['partition'])
+            parent_devname = self.partition_parent_devname(blockdev_data)
+            parent_blockdev = self.blockdev_data[parent_devname]
+            ptable = parent_blockdev.get('partitiontable')
+            if ptable:
+                part = None
+                for pentry in ptable['partitions']:
+                    node = pentry['node']
+                    if node.lstrip(parent_devname) == attrs['partition']:
+                        part = pentry
+                        break
+
+                if part is None:
+                    raise RuntimeError(
+                        "Couldn't find partition entry in table")
+            else:
+                part = attrs
+
+            # sectors 512B sector units in both attrs and ptable
+            offset_val = int(part['start']) * 512
+            if offset_val > 0:
+                entry['offset'] = offset_val
+
+            # ptable size field is in sectors
+            entry['size'] = int(part['size'])
+            if ptable:
+                entry['size'] *= 512
+
+            ptype = blockdev_data.get('ID_PART_ENTRY_TYPE')
+            flag_name, _flag_code = self.ptable_uuid_to_flag_entry(ptype)
+
+            # logical partitions are not tagged in data, however
+            # the partition number > 4 (ie, not primary nor extended)
+            if ptable and ptable.get('label') == 'dos' and entry['number'] > 4:
+                flag_name = 'logical'
+
+            if flag_name:
+                entry['flag'] = flag_name
+
+            # determine parent blockdev and calculate the device id
+            if parent_blockdev:
+                device_id = self.blockdev_to_id(parent_blockdev)
+                if device_id:
+                    entry['device'] = device_id
+
+        return entry
+
+
+class FilesystemParser(ProbertParser):
+
+    probe_data_key = 'filesystem'
+
+    def parse(self):
+        """parse probert 'filesystem' data format.
+
+            returns tuple with list entries converted to
+            storage config type:format and any validation errors.
+        """
+        configs = []
+        errors = []
+        for devname, data in self.class_data.items():
+            blockdev_data = self.blockdev_data.get(devname)
+            if not blockdev_data:
+                err = ('No probe data found for blockdev '
+                       '%s for fs: %s' % (devname, data))
+                errors.append(err)
+                continue
+
+            # no floppy, no cdrom
+            if blockdev_data['MAJOR'] in ["11", "2"]:
+                continue
+
+            volume_id = self.blockdev_to_id(blockdev_data)
+
+            # don't capture non-filesystem usage
+            if data['USAGE'] != "filesystem":
+                continue
+
+            # ignore types that we cannot create
+            if data['TYPE'] not in schemas._fstypes:
+                continue
+
+            entry = self.asdict(volume_id, data)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+    def asdict(self, volume_id, fs_data):
+        """ process fs_data and return a curtin storage config dict.
+            This method will return curtin storage type: format.
+        {
+            'LABEL': xxxx,
+            'TYPE': ext2,
+            'UUID': .....,
+        }
+        """
+        entry = {
+            'id': 'format-' + volume_id,
+            'type': 'format',
+            'volume': volume_id,
+            'fstype': fs_data.get('TYPE'),
+        }
+        uuid = fs_data.get('UUID')
+        if uuid:
+            valid_uuid = re.match(schemas._uuid_pattern, uuid)
+            if valid_uuid:
+                entry['uuid'] = uuid
+
+        return entry
+
+
+class LvmParser(ProbertParser):
+
+    probe_data_key = 'lvm'
+
+    def lvm_partition_asdict(self, lv_name, lv_config):
+        return {'type': 'lvm_partition',
+                'id': 'lvm-partition-%s' % lv_config['name'],
+                'name': lv_config['name'],
+                'size': lv_config['size'],
+                'volgroup': 'lvm-volgroup-%s' % lv_config['volgroup']}
+
+    def lvm_volgroup_asdict(self, vg_name, vg_config):
+        """ process volgroup probe structure into storage config dict."""
+        blockdev_ids = []
+        for pvol in vg_config.get('devices', []):
+            pvol_bdev = self.lookup_devname(pvol)
+            blockdev_data = self.blockdev_data[pvol_bdev]
+            if blockdev_data:
+                blockdev_ids.append(self.blockdev_to_id(blockdev_data))
+
+        return {'type': 'lvm_volgroup',
+                'id': 'lvm-volgroup-%s' % vg_name,
+                'name': vg_name,
+                'devices': sorted(blockdev_ids)}
+
+    def parse(self):
+        """parse probert 'lvm' data format.
+
+            returns tuple with list entries converted to
+            storage config type:lvm_partition, type:lvm_volgroup
+            and any validation errors.
+        """
+        # exit early if lvm_data is empty
+        if 'volume_groups' not in self.class_data:
+            return ([], [])
+
+        configs = []
+        errors = []
+        for vg_name, vg_config in self.class_data['volume_groups'].items():
+            entry = self.lvm_volgroup_asdict(vg_name, vg_config)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        for lv_name, lv_config in self.class_data['logical_volumes'].items():
+            entry = self.lvm_partition_asdict(lv_name, lv_config)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+
+        return (configs, errors)
+
+
+class DmcryptParser(ProbertParser):
+
+    probe_data_key = 'dmcrypt'
+
+    def asdict(self, crypt_config):
+        crypt_name = crypt_config['name']
+        backing_dev = crypt_config['blkdevs_used']
+        if not backing_dev.startswith('/dev/'):
+            backing_dev = os.path.join('/dev', backing_dev)
+
+        bdev = self.lookup_devname(backing_dev)
+        bdev_data = self.blockdev_data[bdev]
+        bdev_id = self.blockdev_to_id(bdev_data) if bdev_data else None
+        if not bdev_id:
+            raise ValueError('Cannot find blockdev id for %s' % bdev)
+
+        return {'type': 'dm_crypt',
+                'id': 'dmcrypt-%s' % crypt_name,
+                'volume': bdev_id,
+                'key': '',
+                'dm_name': crypt_name}
+
+    def parse(self):
+        """parse probert 'dmcrypt' data format.
+
+            returns tuple of lists: (configs, errors)
+            contain configs of type:dmcrypt and any errors.
+        """
+        configs = []
+        errors = []
+        for crypt_name, crypt_config in self.class_data.items():
+            entry = self.asdict(crypt_config)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+
+class RaidParser(ProbertParser):
+
+    probe_data_key = 'raid'
+
+    def asdict(self, raid_data):
+        devname = raid_data.get('DEVNAME', 'NODEVNAMEKEY')
+        # FIXME, need to handle rich md_name values, rather than mdX
+        # LP: #1803933
+        raidname = os.path.basename(devname)
+        return {'type': 'raid',
+                'id': 'raid-%s' % raidname,
+                'name': raidname,
+                'raidlevel': raid_data.get('raidlevel'),
+                'devices': sorted([
+                    self.blockdev_to_id(self.blockdev_data[dev])
+                    for dev in raid_data.get('devices')]),
+                'spare_devices': sorted([
+                    self.blockdev_to_id(self.blockdev_data[dev])
+                    for dev in raid_data.get('spare_devices')])}
+
+    def parse(self):
+        """parse probert 'raid' data format.
+
+           Collects storage config type: raid for valid
+           data and returns tuple of lists, configs, errors.
+        """
+
+        configs = []
+        errors = []
+        for devname, data in self.class_data.items():
+            entry = self.asdict(data)
+            if entry:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+
+class MountParser(ProbertParser):
+
+    probe_data_key = 'mount'
+
+    def asdict(self, mdata):
+        # the source value may be a devlink alias, look it up
+        source = self.lookup_devname(mdata.get('source'))
+
+        # we can filter mounts for block devices only
+        # this excludes lots of sys/proc/dev/cgroup
+        # mounts that are found but not related to
+        # storage config
+        # XXX: bind mounts might need some work here
+        if not source:
+            return {}
+
+        # no floppy, no cdrom
+        if self.blockdev_data[source]['MAJOR'] in ["11", "2"]:
+            return {}
+
+        source_id = self.blockdev_to_id(self.blockdev_data[source])
+        return {'type': 'mount',
+                'id': 'mount-%s' % source_id,
+                'path': mdata.get('target'),
+                'device': 'format-%s' % source_id}
+
+    def parse(self):
+        """parse probert 'mount' data format
+
+           mount : [{.. 'children': [..]}]
+
+           Collects storage config type: mount for valid
+           data and returns tuple of lists: (configs, errors)
+        """
+        def collect_mounts(mdata):
+            mounts = [self.asdict(mdata)]
+            for child in mdata.get('children', []):
+                mounts.extend(collect_mounts(child))
+            return [mnt for mnt in mounts if mnt]
+
+        configs = []
+        errors = []
+        for mdata in self.class_data:
+            collected_mounts = collect_mounts(mdata)
+            for entry in collected_mounts:
+                try:
+                    validate_config(entry)
+                except ValueError as e:
+                    errors.append(e)
+                    continue
+                configs.append(entry)
+        return (configs, errors)
+
+
+class ZfsParser(ProbertParser):
+
+    probe_data_key = 'zfs'
+
+    def get_local_ds_properties(self, dataset):
+        """ extract a dictionary of propertyname: value
+            for any property that has a source of 'local'
+            which means it's been set by configuration.
+        """
+        if 'properties' not in dataset:
+            return {}
+
+        set_props = {}
+        for prop_name, setting in dataset['properties'].items():
+            if setting['source'] == 'local':
+                set_props[prop_name] = setting['value']
+
+        return set_props
+
+    def zpool_asdict(self, name, zpool_data):
+        """ convert zpool data and convert to curtin storage_config dict.
+        """
+        vdevs = []
+        zdb = zpool_data.get('zdb', {})
+        for child_name, child_config in zdb.get('vdev_tree', {}).items():
+            if not child_name.startswith('children'):
+                continue
+            path = child_config.get('path')
+            devname = self.blockdev_byid_to_devname(path)
+            # skip any zpools not backed by blockdevices
+            if not devname:
+                continue
+            vdevs.append(devname)
+
+        if len(vdevs) == 0:
+            return None
+
+        id_name = 'zpool-%s-%s' % (os.path.basename(vdevs[0]), name)
+        return {'type': 'zpool',
+                'id': id_name,
+                'pool': name,
+                'vdevs': sorted(vdevs)}
+
+    def zfs_asdict(self, ds_name, ds_properties, zpool_data):
+        # ignore the base pool name (rpool) vs (rpool/ROOT/zfsroot)
+        if '/' not in ds_name or not zpool_data:
+            return
+
+        id_name = 'zfs-%s' % ds_name.replace('/', '-')
+        parent_zpool_name = zpool_data.get('pool')
+        return {'type': 'zfs',
+                'id': id_name,
+                'pool': zpool_data.get('id'),
+                'volume': ds_name.split(parent_zpool_name)[-1],
+                'properties': ds_properties}
+
+    def parse(self):
+        """ parse probert 'zfs' data format
+
+            zfs: {
+                'zpools': {
+                    '<pool1>': {
+                        'datasets': {
+                            <dataset1>: {
+                                "properties": {
+                                    "propname": {'source': "default",
+                                                 'value': "<value>"},
+                                }
+                            }
+                        }
+                        'zdb': {
+                            ...
+                            vdev_tree: {
+                                childrens[N]: {
+                                    'path': '/dev/disk/by-id/foo',
+                                }
+                            }
+                            version: 28,
+                        }
+                    }
+                }
+            }
+        """
+
+        errors = []
+        zpool_configs = []
+        zfs_configs = []
+
+        for zp_name, zp_data in self.class_data.get('zpools', {}).items():
+            zpool_entry = self.zpool_asdict(zp_name, zp_data)
+            if zpool_entry:
+                try:
+                    validate_config(zpool_entry)
+                except ValueError as e:
+                    errors.append(e)
+                    zpool_entry = None
+
+            datasets = zp_data.get('datasets')
+            for ds in datasets.keys():
+                ds_props = self.get_local_ds_properties(datasets[ds])
+                zfs_entry = self.zfs_asdict(ds, ds_props, zpool_entry)
+                if zfs_entry:
+                    try:
+                        validate_config(zfs_entry)
+                    except ValueError as e:
+                        errors.append(e)
+                        continue
+                    zfs_configs.append(zfs_entry)
+
+            if zpool_entry:
+                zpool_configs.append(zpool_entry)
+
+        return (zpool_configs + zfs_configs, errors)
+
+
+def extract_storage_config(probe_data):
+    """ Examine a probert storage dictionary and extract a curtin
+        storage configuration that would recreate all of the
+        storage devices present in the provided data.
+
+        Returns a storage config dictionary
+    """
+    convert_map = {
+        'bcache': BcacheParser,
+        'blockdev': BlockdevParser,
+        'dmcrypt': DmcryptParser,
+        'filesystem': FilesystemParser,
+        'lvm': LvmParser,
+        'raid': RaidParser,
+        'mount': MountParser,
+        'zfs': ZfsParser,
+    }
+    configs = []
+    errors = []
+    LOG.debug('Extracting storage config from probe data')
+    for ptype, pname in convert_map.items():
+        parser = pname(probe_data)
+        found_cfgs, found_errs = parser.parse()
+        configs.extend(found_cfgs)
+        errors.extend(found_errs)
+
+    LOG.debug('Sorting extracted configurations')
+    disk = [cfg for cfg in configs if cfg.get('type') == 'disk']
+    part = [cfg for cfg in configs if cfg.get('type') == 'partition']
+    format = [cfg for cfg in configs if cfg.get('type') == 'format']
+    lvols = [cfg for cfg in configs if cfg.get('type') == 'lvm_volgroup']
+    lparts = [cfg for cfg in configs if cfg.get('type') == 'lvm_partition']
+    raids = [cfg for cfg in configs if cfg.get('type') == 'raid']
+    dmcrypts = [cfg for cfg in configs if cfg.get('type') == 'dm_crypt']
+    mounts = [cfg for cfg in configs if cfg.get('type') == 'mount']
+    bcache = [cfg for cfg in configs if cfg.get('type') == 'bcache']
+    zpool = [cfg for cfg in configs if cfg.get('type') == 'zpool']
+    zfs = [cfg for cfg in configs if cfg.get('type') == 'zfs']
+
+    ordered = (disk + part + format + lvols + lparts + raids + dmcrypts +
+               mounts + bcache + zpool + zfs)
+
+    final_config = {'storage': {'version': 1, 'config': ordered}}
+    try:
+        LOG.info('Validating extracted storage config components')
+        validate_config(final_config['storage'])
+    except ValueError as e:
+        errors.append(e)
+
+    for e in errors:
+        LOG.exception('Validation error: %s\n' % e)
+    if len(errors) > 0:
+        raise RuntimeError("Extract storage config does not validate.")
+
+    # build and merge probed data into a valid storage config by
+    # generating a config tree for each item in the probed data
+    # and then merging the trees, which resolves dependencies
+    # and produced a dependency ordered storage config
+    LOG.debug("Extracted (unmerged) storage config:\n%s",
+              yaml.dump({'storage': ordered},
+                        indent=4, default_flow_style=False))
+
+    LOG.debug("Generating storage config dependencies")
+    ctrees = []
+    for cfg in ordered:
+        tree = get_config_tree(cfg.get('id'), final_config)
+        ctrees.append(tree)
+
+    LOG.debug("Merging storage config dependencies")
+    merged_config = {
+        'version': 1,
+        'config': merge_config_trees_to_list(ctrees)
+    }
+    LOG.debug("Merged storage config:\n%s",
+              yaml.dump({'storage': merged_config},
+                        indent=4, default_flow_style=False))
+    return {'storage': merged_config}
+
+
 # vi: ts=4 expandtab syntax=python
diff --git a/debian/control b/debian/control
index 305bbd7..c2de623 100644
--- a/debian/control
+++ b/debian/control
@@ -36,6 +36,7 @@ Depends: bcache-tools,
          lvm2,
          mdadm,
          parted,
+         probert,
          python3-curtin (= ${binary:Version}),
          udev,
          xfsprogs,
diff --git a/examples/tests/vmtest_defaults.yaml b/examples/tests/vmtest_defaults.yaml
index b1512a8..797fe6c 100644
--- a/examples/tests/vmtest_defaults.yaml
+++ b/examples/tests/vmtest_defaults.yaml
@@ -19,6 +19,39 @@ _persist_journal:
     }
     exit 0
 
+# this runs curtin block-discover and stores the result
+# in the target system root dir
+_block_discover:
+ - &block_discover |
+   j='import sys\ntry:\n  import jsonschema\nexcept ImportError:\n sys.exit(1)'
+   has_jschema() {
+       /bin/echo -e $j | python2.7
+       py2_rc=$?
+       /bin/echo -e $j | python3
+       py3_rc=$?
+       if [ $py2_rc = "0" -o $py3_rc = "0" ]; then
+           return 0
+       fi
+       return 1
+   }
+   # if ubuntu/debian
+   if [ -e "$TARGET_MOUNT_POINT/usr/bin/apt-get" ]; then
+       # xenial and lower don't have jsonschema
+       if has_jschema; then
+           outfile="${TARGET_MOUNT_POINT}/root/curtin-block-discover.json"
+           echo "discovering block devices"
+           curtin -vv block-discover > $outfile
+           which curtin > $TARGET_MOUNT_POINT/root/which-curtin
+           cdir=$(realpath -m "$(dirname `which curtin`)/../")
+           echo $cdir >> $TARGET_MOUNT_POINT/root/which-curtin
+           cp -a $cdir  $TARGET_MOUNT_POINT/root/curtin
+           curtin in-target -- apt-get install python3-pyudev;
+       fi
+   fi
+   exit 0
+
+
 late_commands:
   01_vmtest_pollinate: ['curtin', 'in-target', '--', 'sh', '-c', *pvmtest]
   02_persist_journal: ['curtin', 'in-target', '--', 'sh', '-c', *persist_journal]
+  03_block_disc: ['sh', '-c', *block_discover]
diff --git a/pylintrc b/pylintrc
index d027f48..167cff0 100644
--- a/pylintrc
+++ b/pylintrc
@@ -7,4 +7,16 @@ jobs=0
 # List of members which are set dynamically and missed by pylint inference
 # system, and so shouldn't trigger E1101 when accessed. Python regular
 # expressions are accepted.
-generated-members=DISTROS.*
+generated-members=DISTROS.*,parse_*,*_data
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis. It
+# supports qualified module names, as well as Unix pattern matching.
+ignored-modules=probert
+
+# List of class names for which member attributes should not be checked (useful
+# for classes with dynamically set attributes). This supports the use of
+# qualified names.
+# argparse.Namespace from https://github.com/PyCQA/pylint/issues/2413
+ignored-classes=ProbertParser,BcacheParser,BlockdevParser,LvmParser,RaidParser,MountParser,ZfsParser
diff --git a/tests/data/live-iso.json b/tests/data/live-iso.json
new file mode 100644
index 0000000..d0e9afe
--- /dev/null
+++ b/tests/data/live-iso.json
@@ -0,0 +1,811 @@
+{
+    "network": {
+        "links": [
+            {
+                "addresses": [
+                    {
+                        "address": "10.0.2.15/24",
+                        "family": 2,
+                        "scope": "global",
+                        "source": "dhcp"
+                    },
+                    {
+                        "address": "fec0::5054:ff:fe12:3456/64",
+                        "family": 10,
+                        "scope": "site",
+                        "source": "dhcp"
+                    },
+                    {
+                        "address": "fe80::5054:ff:fe12:3456/64",
+                        "family": 10,
+                        "scope": "link",
+                        "source": "static"
+                    }
+                ],
+                "bond": {
+                    "is_master": false,
+                    "is_slave": false,
+                    "lacp_rate": null,
+                    "master": null,
+                    "mode": null,
+                    "slaves": [],
+                    "xmit_hash_policy": null
+                },
+                "bridge": {
+                    "interfaces": [],
+                    "is_bridge": false,
+                    "is_port": false,
+                    "options": {}
+                },
+                "netlink_data": {
+                    "arptype": 1,
+                    "family": 0,
+                    "flags": 69699,
+                    "ifindex": 2,
+                    "is_vlan": false,
+                    "name": "ens3"
+                },
+                "type": "eth",
+                "udev_data": {
+                    "DEVPATH": "/devices/pci0000:00/0000:00:03.0/net/ens3",
+                    "ID_BUS": "pci",
+                    "ID_MM_CANDIDATE": "1",
+                    "ID_MODEL_FROM_DATABASE": "82540EM Gigabit Ethernet Controller (QEMU Virtual Machine)",
+                    "ID_MODEL_ID": "0x100e",
+                    "ID_NET_NAME_MAC": "enx525400123456",
+                    "ID_NET_NAME_PATH": "enp0s3",
+                    "ID_NET_NAME_SLOT": "ens3",
+                    "ID_NET_NAMING_SCHEME": "v240",
+                    "ID_PATH": "pci-0000:00:03.0",
+                    "ID_PATH_TAG": "pci-0000_00_03_0",
+                    "ID_PCI_CLASS_FROM_DATABASE": "Network controller",
+                    "ID_PCI_SUBCLASS_FROM_DATABASE": "Ethernet controller",
+                    "ID_VENDOR_FROM_DATABASE": "Intel Corporation",
+                    "ID_VENDOR_ID": "0x8086",
+                    "IFINDEX": "2",
+                    "INTERFACE": "ens3",
+                    "SUBSYSTEM": "net",
+                    "SYSTEMD_ALIAS": "/sys/subsystem/net/devices/ens3",
+                    "TAGS": ":systemd:",
+                    "USEC_INITIALIZED": "82651806",
+                    "attrs": {
+                        "addr_assign_type": "0",
+                        "addr_len": "6",
+                        "address": "52:54:00:12:34:56",
+                        "broadcast": "ff:ff:ff:ff:ff:ff",
+                        "carrier": "1",
+                        "carrier_changes": "2",
+                        "carrier_down_count": "1",
+                        "carrier_up_count": "1",
+                        "dev_id": "0x0",
+                        "dev_port": "0",
+                        "device": null,
+                        "dormant": "0",
+                        "duplex": "full",
+                        "flags": "0x1003",
+                        "gro_flush_timeout": "0",
+                        "ifalias": "",
+                        "ifindex": "2",
+                        "iflink": "2",
+                        "link_mode": "0",
+                        "mtu": "1500",
+                        "name_assign_type": "4",
+                        "netdev_group": "0",
+                        "operstate": "up",
+                        "phys_port_id": null,
+                        "phys_port_name": null,
+                        "phys_switch_id": null,
+                        "proto_down": "0",
+                        "speed": "1000",
+                        "subsystem": "net",
+                        "tx_queue_len": "1000",
+                        "type": "1",
+                        "uevent": "INTERFACE=ens3\nIFINDEX=2"
+                    }
+                }
+            },
+            {
+                "addresses": [
+                    {
+                        "address": "127.0.0.1/8",
+                        "family": 2,
+                        "scope": "host",
+                        "source": "static"
+                    },
+                    {
+                        "address": "::1/128",
+                        "family": 10,
+                        "scope": "host",
+                        "source": "static"
+                    }
+                ],
+                "bond": {
+                    "is_master": false,
+                    "is_slave": false,
+                    "lacp_rate": null,
+                    "master": null,
+                    "mode": null,
+                    "slaves": [],
+                    "xmit_hash_policy": null
+                },
+                "bridge": {
+                    "interfaces": [],
+                    "is_bridge": false,
+                    "is_port": false,
+                    "options": {}
+                },
+                "netlink_data": {
+                    "arptype": 772,
+                    "family": 0,
+                    "flags": 65609,
+                    "ifindex": 1,
+                    "is_vlan": false,
+                    "name": "lo"
+                },
+                "type": "lo",
+                "udev_data": {
+                    "DEVPATH": "/devices/virtual/net/lo",
+                    "ID_MM_CANDIDATE": "1",
+                    "IFINDEX": "1",
+                    "INTERFACE": "lo",
+                    "SUBSYSTEM": "net",
+                    "USEC_INITIALIZED": "89206115",
+                    "attrs": {
+                        "addr_assign_type": "0",
+                        "addr_len": "6",
+                        "address": "00:00:00:00:00:00",
+                        "broadcast": "00:00:00:00:00:00",
+                        "carrier": "1",
+                        "carrier_changes": "0",
+                        "carrier_down_count": "0",
+                        "carrier_up_count": "0",
+                        "dev_id": "0x0",
+                        "dev_port": "0",
+                        "dormant": "0",
+                        "duplex": null,
+                        "flags": "0x9",
+                        "gro_flush_timeout": "0",
+                        "ifalias": "",
+                        "ifindex": "1",
+                        "iflink": "1",
+                        "link_mode": "0",
+                        "mtu": "65536",
+                        "name_assign_type": null,
+                        "netdev_group": "0",
+                        "operstate": "unknown",
+                        "phys_port_id": null,
+                        "phys_port_name": null,
+                        "phys_switch_id": null,
+                        "proto_down": "0",
+                        "speed": null,
+                        "subsystem": "net",
+                        "tx_queue_len": "1000",
+                        "type": "772",
+                        "uevent": "INTERFACE=lo\nIFINDEX=1"
+                    }
+                }
+            }
+        ],
+        "routes": [
+            {
+                "dst": "default",
+                "family": 2,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "10.0.2.0/24",
+                "family": 2,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "10.0.2.2",
+                "family": 2,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "10.0.2.0",
+                "family": 2,
+                "ifindex": 2,
+                "table": 255,
+                "type": 3
+            },
+            {
+                "dst": "10.0.2.15",
+                "family": 2,
+                "ifindex": 2,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "10.0.2.255",
+                "family": 2,
+                "ifindex": 2,
+                "table": 255,
+                "type": 3
+            },
+            {
+                "dst": "127.0.0.0",
+                "family": 2,
+                "ifindex": 1,
+                "table": 255,
+                "type": 3
+            },
+            {
+                "dst": "127.0.0.0/8",
+                "family": 2,
+                "ifindex": 1,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "127.0.0.1",
+                "family": 2,
+                "ifindex": 1,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "127.255.255.255",
+                "family": 2,
+                "ifindex": 1,
+                "table": 255,
+                "type": 3
+            },
+            {
+                "dst": "::1",
+                "family": 10,
+                "ifindex": 1,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "fe80::/64",
+                "family": 10,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "fec0::/64",
+                "family": 10,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "default",
+                "family": 10,
+                "ifindex": 2,
+                "table": 254,
+                "type": 1
+            },
+            {
+                "dst": "::1",
+                "family": 10,
+                "ifindex": 1,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "fe80::5054:ff:fe12:3456",
+                "family": 10,
+                "ifindex": 2,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "fec0::5054:ff:fe12:3456",
+                "family": 10,
+                "ifindex": 2,
+                "table": 255,
+                "type": 2
+            },
+            {
+                "dst": "ff00::/8",
+                "family": 10,
+                "ifindex": 2,
+                "table": 255,
+                "type": 1
+            }
+        ]
+    },
+    "storage": {
+        "bcache": {
+            "backing": {},
+            "caching": {}
+        },
+        "blockdev": {
+            "/dev/fd0": {
+                "DEVNAME": "/dev/fd0",
+                "DEVPATH": "/devices/platform/floppy.0/block/fd0",
+                "DEVTYPE": "disk",
+                "MAJOR": "2",
+                "MINOR": "0",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "82216378",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "11",
+                    "dev": "2:0",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "events": "",
+                    "events_async": "",
+                    "events_poll_msecs": "-1",
+                    "ext_range": "1",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "1",
+                    "removable": "1",
+                    "ro": "0",
+                    "size": "4096",
+                    "stat": "       1        0        8       68        0        0        0        0        0        8       68        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=2\nMINOR=0\nDEVNAME=fd0\nDEVTYPE=disk"
+                }
+            },
+            "/dev/sda": {
+                "DEVLINKS": "/dev/disk/by-id/scsi-0ATA_QEMU_HARDDISK_QM00001 /dev/disk/by-id/ata-QEMU_HARDDISK_QM00001 /dev/disk/by-id/scsi-1ATA_QEMU_HARDDISK_QM00001 /dev/disk/by-id/scsi-SATA_QEMU_HARDDISK_QM00001 /dev/disk/by-path/pci-0000:00:01.1-ata-1",
+                "DEVNAME": "/dev/sda",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.1/ata1/host0/target0:0:0/0:0:0:0/block/sda",
+                "DEVTYPE": "disk",
+                "ID_ATA": "1",
+                "ID_BUS": "ata",
+                "ID_MODEL": "QEMU_HARDDISK",
+                "ID_MODEL_ENC": "QEMU\\x20HARDDISK\\x20\\x20\\x20",
+                "ID_PATH": "pci-0000:00:01.1-ata-1",
+                "ID_PATH_TAG": "pci-0000_00_01_1-ata-1",
+                "ID_REVISION": "2.5+",
+                "ID_SCSI": "1",
+                "ID_SCSI_DI": "1",
+                "ID_SCSI_SN": "1",
+                "ID_SERIAL": "QEMU_HARDDISK_QM00001",
+                "ID_SERIAL_SHORT": "QM00001",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "MAJOR": "8",
+                "MINOR": "0",
+                "MPATH_SBIN_PATH": "/sbin",
+                "SCSI_IDENT_LUN_ATA": "QEMU_HARDDISK_QM00001",
+                "SCSI_IDENT_LUN_T10": "ATA_QEMU_HARDDISK_QM00001",
+                "SCSI_IDENT_LUN_VENDOR": "QM00001",
+                "SCSI_IDENT_SERIAL": "QM00001",
+                "SCSI_MODEL": "QEMU_HARDDISK",
+                "SCSI_MODEL_ENC": "QEMU\\x20HARDDISK\\x20\\x20\\x20",
+                "SCSI_REVISION": "2.5+",
+                "SCSI_TPGS": "0",
+                "SCSI_TYPE": "disk",
+                "SCSI_VENDOR": "ATA",
+                "SCSI_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "82301144",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "50",
+                    "dev": "8:0",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "events": "",
+                    "events_async": "",
+                    "events_poll_msecs": "-1",
+                    "ext_range": "256",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "16",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "10737418240",
+                    "stat": "     411        0    16968      119        0        0        0        0        0      264        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=0\nDEVNAME=sda\nDEVTYPE=disk"
+                }
+            },
+            "/dev/sr0": {
+                "DEVLINKS": "/dev/cdrom /dev/disk/by-uuid/2019-05-29-11-26-40-00 /dev/dvd /dev/disk/by-id/ata-QEMU_DVD-ROM_QM00003 /dev/disk/by-path/pci-0000:00:01.1-ata-2 /dev/disk/by-id/scsi-0QEMU_QEMU_DVD-ROM_QM00003 /dev/disk/by-label/Ubuntu\\x20custom\\x20amd64 /dev/disk/by-id/scsi-1ATA_QEMU_DVD-ROM_QM00003",
+                "DEVNAME": "/dev/sr0",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0",
+                "DEVTYPE": "disk",
+                "ID_ATA": "1",
+                "ID_BUS": "ata",
+                "ID_CDROM": "1",
+                "ID_CDROM_DVD": "1",
+                "ID_CDROM_MEDIA": "1",
+                "ID_CDROM_MEDIA_DVD": "1",
+                "ID_CDROM_MEDIA_SESSION_COUNT": "1",
+                "ID_CDROM_MEDIA_STATE": "complete",
+                "ID_CDROM_MEDIA_TRACK_COUNT": "1",
+                "ID_CDROM_MEDIA_TRACK_COUNT_DATA": "1",
+                "ID_CDROM_MRW": "1",
+                "ID_CDROM_MRW_W": "1",
+                "ID_FOR_SEAT": "block-pci-0000_00_01_1-ata-2",
+                "ID_FS_BOOT_SYSTEM_ID": "EL\\x20TORITO\\x20SPECIFICATION",
+                "ID_FS_LABEL": "Ubuntu_custom_amd64",
+                "ID_FS_LABEL_ENC": "Ubuntu\\x20custom\\x20amd64",
+                "ID_FS_TYPE": "iso9660",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "2019-05-29-11-26-40-00",
+                "ID_FS_UUID_ENC": "2019-05-29-11-26-40-00",
+                "ID_FS_VERSION": "Joliet Extension",
+                "ID_MODEL": "QEMU_DVD-ROM",
+                "ID_MODEL_ENC": "QEMU\\x20DVD-ROM\\x20\\x20\\x20\\x20",
+                "ID_PART_TABLE_TYPE": "dos",
+                "ID_PART_TABLE_UUID": "43306950",
+                "ID_PATH": "pci-0000:00:01.1-ata-2",
+                "ID_PATH_TAG": "pci-0000_00_01_1-ata-2",
+                "ID_REVISION": "2.5+",
+                "ID_SCSI": "1",
+                "ID_SCSI_DI": "1",
+                "ID_SERIAL": "QEMU_DVD-ROM_QM00003",
+                "ID_TYPE": "cd/dvd",
+                "ID_VENDOR": "QEMU",
+                "ID_VENDOR_ENC": "QEMU\\x20\\x20\\x20\\x20",
+                "MAJOR": "11",
+                "MINOR": "0",
+                "SCSI_IDENT_LUN_ATA": "QEMU_DVD-ROM_QM00003",
+                "SCSI_IDENT_LUN_T10": "ATA_QEMU_DVD-ROM_QM00003",
+                "SCSI_IDENT_LUN_VENDOR": "QM00003",
+                "SCSI_MODEL": "QEMU_DVD-ROM",
+                "SCSI_MODEL_ENC": "QEMU\\x20DVD-ROM\\x20\\x20\\x20\\x20",
+                "SCSI_REVISION": "2.5+",
+                "SCSI_TPGS": "0",
+                "SCSI_TYPE": "cd/dvd",
+                "SCSI_VENDOR": "QEMU",
+                "SCSI_VENDOR_ENC": "QEMU\\x20\\x20\\x20\\x20",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_MOUNT_DEVICE_BOUND": "1",
+                "TAGS": ":seat:systemd:uaccess:",
+                "USEC_INITIALIZED": "82293809",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "119",
+                    "dev": "11:0",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "events": "media_change eject_request",
+                    "events_async": "",
+                    "events_poll_msecs": "-1",
+                    "ext_range": "1",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "1",
+                    "removable": "1",
+                    "ro": "0",
+                    "size": "3141533696",
+                    "stat": "    3269       18   433168    66172        0        0        0        0        0     6440    63912        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=11\nMINOR=0\nDEVNAME=sr0\nDEVTYPE=disk"
+                },
+                "partitiontable": {
+                    "device": "/dev/sr0",
+                    "id": "0x43306950",
+                    "label": "dos",
+                    "partitions": [
+                        {
+                            "bootable": true,
+                            "node": "/dev/sr0p1",
+                            "size": 1533952,
+                            "start": 0,
+                            "type": "0"
+                        },
+                        {
+                            "node": "/dev/sr0p2",
+                            "size": 7488,
+                            "start": 996,
+                            "type": "ef"
+                        }
+                    ],
+                    "unit": "sectors"
+                }
+            }
+        },
+        "dmcrypt": {},
+        "filesystem": {
+            "/dev/sr0": {
+                "BOOT_SYSTEM_ID": "EL\\x20TORITO\\x20SPECIFICATION",
+                "LABEL": "Ubuntu_custom_amd64",
+                "LABEL_ENC": "Ubuntu\\x20custom\\x20amd64",
+                "TYPE": "iso9660",
+                "USAGE": "filesystem",
+                "UUID": "2019-05-29-11-26-40-00",
+                "UUID_ENC": "2019-05-29-11-26-40-00",
+                "VERSION": "Joliet Extension"
+            }
+        },
+        "lvm": {},
+        "mount": [
+            {
+                "children": [
+                    {
+                        "children": [
+                            {
+                                "fstype": "securityfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "securityfs",
+                                "target": "/sys/kernel/security"
+                            },
+                            {
+                                "children": [
+                                    {
+                                        "fstype": "cgroup2",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,nsdelegate",
+                                        "source": "cgroup2",
+                                        "target": "/sys/fs/cgroup/unified"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,xattr,name=systemd",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/systemd"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,rdma",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/rdma"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,hugetlb",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/hugetlb"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,pids",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/pids"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,freezer",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/freezer"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,memory",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/memory"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,cpu,cpuacct",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/cpu,cpuacct"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,cpuset",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/cpuset"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,blkio",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/blkio"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,perf_event",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/perf_event"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,devices",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/devices"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,net_cls,net_prio",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/net_cls,net_prio"
+                                    }
+                                ],
+                                "fstype": "tmpfs",
+                                "options": "ro,nosuid,nodev,noexec,mode=755",
+                                "source": "tmpfs",
+                                "target": "/sys/fs/cgroup"
+                            },
+                            {
+                                "fstype": "pstore",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "pstore",
+                                "target": "/sys/fs/pstore"
+                            },
+                            {
+                                "fstype": "efivarfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "efivarfs",
+                                "target": "/sys/firmware/efi/efivars"
+                            },
+                            {
+                                "fstype": "bpf",
+                                "options": "rw,nosuid,nodev,noexec,relatime,mode=700",
+                                "source": "bpf",
+                                "target": "/sys/fs/bpf"
+                            },
+                            {
+                                "fstype": "debugfs",
+                                "options": "rw,relatime",
+                                "source": "debugfs",
+                                "target": "/sys/kernel/debug"
+                            },
+                            {
+                                "fstype": "fusectl",
+                                "options": "rw,relatime",
+                                "source": "fusectl",
+                                "target": "/sys/fs/fuse/connections"
+                            },
+                            {
+                                "fstype": "configfs",
+                                "options": "rw,relatime",
+                                "source": "configfs",
+                                "target": "/sys/kernel/config"
+                            }
+                        ],
+                        "fstype": "sysfs",
+                        "options": "rw,nosuid,nodev,noexec,relatime",
+                        "source": "sysfs",
+                        "target": "/sys"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "autofs",
+                                "options": "rw,relatime,fd=44,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=14037",
+                                "source": "systemd-1",
+                                "target": "/proc/sys/fs/binfmt_misc"
+                            }
+                        ],
+                        "fstype": "proc",
+                        "options": "rw,nosuid,nodev,noexec,relatime",
+                        "source": "proc",
+                        "target": "/proc"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "devpts",
+                                "options": "rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000",
+                                "source": "devpts",
+                                "target": "/dev/pts"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev",
+                                "source": "tmpfs",
+                                "target": "/dev/shm"
+                            },
+                            {
+                                "fstype": "mqueue",
+                                "options": "rw,relatime",
+                                "source": "mqueue",
+                                "target": "/dev/mqueue"
+                            },
+                            {
+                                "fstype": "hugetlbfs",
+                                "options": "rw,relatime,pagesize=2M",
+                                "source": "hugetlbfs",
+                                "target": "/dev/hugepages"
+                            }
+                        ],
+                        "fstype": "devtmpfs",
+                        "options": "rw,nosuid,relatime,size=465256k,nr_inodes=116314,mode=755",
+                        "source": "udev",
+                        "target": "/dev"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime,size=5120k",
+                                "source": "tmpfs",
+                                "target": "/run/lock"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,relatime,size=100148k,mode=700,uid=999,gid=999",
+                                "source": "tmpfs",
+                                "target": "/run/user/999"
+                            }
+                        ],
+                        "fstype": "tmpfs",
+                        "options": "rw,nosuid,noexec,relatime,size=100152k,mode=755",
+                        "source": "tmpfs",
+                        "target": "/run"
+                    },
+                    {
+                        "fstype": "iso9660",
+                        "options": "ro,noatime,nojoliet,check=s,map=n,blocksize=2048",
+                        "source": "/dev/sr0",
+                        "target": "/cdrom"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,noatime",
+                        "source": "/dev/loop0",
+                        "target": "/rofs"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,relatime",
+                        "source": "/dev/loop2",
+                        "target": "/usr/lib/modules"
+                    },
+                    {
+                        "fstype": "tmpfs",
+                        "options": "rw,nosuid,nodev,relatime",
+                        "source": "tmpfs",
+                        "target": "/tmp"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,relatime",
+                        "source": "/dev/loop3",
+                        "target": "/media/rack.lower"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,relatime",
+                        "source": "/dev/loop4",
+                        "target": "/media/region.lower"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,relatime",
+                        "source": "/dev/loop0",
+                        "target": "/media/filesystem"
+                    },
+                    {
+                        "fstype": "overlay",
+                        "options": "ro,relatime,lowerdir=/media/region.lower:/media/rack.lower:/media/filesystem",
+                        "source": "overlay",
+                        "target": "/media/region"
+                    },
+                    {
+                        "fstype": "overlay",
+                        "options": "ro,relatime,lowerdir=/media/rack.lower:/media/filesystem",
+                        "source": "overlay",
+                        "target": "/media/rack"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop5",
+                        "target": "/snap/core/6673"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop6",
+                        "target": "/snap/subiquity/1012"
+                    }
+                ],
+                "fstype": "overlay",
+                "options": "rw,relatime,lowerdir=//installer.squashfs://filesystem.squashfs,upperdir=/cow/upper,workdir=/cow/work",
+                "source": "/cow",
+                "target": "/"
+            }
+        ],
+        "multipath": {},
+        "raid": {},
+        "zfs": {
+            "zpools": {}
+        }
+    }
+}
diff --git a/tests/data/probert_storage_diglett.json b/tests/data/probert_storage_diglett.json
new file mode 100644
index 0000000..17f6e47
--- /dev/null
+++ b/tests/data/probert_storage_diglett.json
@@ -0,0 +1,14624 @@
+{
+    "storage": {
+        "bcache": {
+            "backing": {
+                "f36394c0-3cc0-4423-8d6f-ffac130f171a": {
+                    "blockdev": "/dev/sda3",
+                    "superblock": {
+                        "cset.uuid": "01da3829-ea92-4600-bd40-7f95974f3087",
+                        "dev.data.cache_mode": "1 [writeback]",
+                        "dev.data.cache_state": "2 [dirty]",
+                        "dev.data.first_sector": "16",
+                        "dev.label": "(empty)",
+                        "dev.sectors_per_block": "1",
+                        "dev.sectors_per_bucket": "1024",
+                        "dev.uuid": "f36394c0-3cc0-4423-8d6f-ffac130f171a",
+                        "sb.csum": "B92908820E241EDD [match]",
+                        "sb.first_sector": "8 [match]",
+                        "sb.magic": "ok",
+                        "sb.version": "1 [backing device]"
+                    }
+                }
+            },
+            "caching": {
+                "ff51a56d-eddc-41b3-867d-8744277c5281": {
+                    "blockdev": "/dev/nvme0n1p1",
+                    "superblock": {
+                        "cset.uuid": "01da3829-ea92-4600-bd40-7f95974f3087",
+                        "dev.cache.cache_sectors": "234372096",
+                        "dev.cache.discard": "no",
+                        "dev.cache.first_sector": "1024",
+                        "dev.cache.ordered": "yes",
+                        "dev.cache.pos": "0",
+                        "dev.cache.replacement": "0 [lru]",
+                        "dev.cache.total_sectors": "234373120",
+                        "dev.label": "(empty)",
+                        "dev.sectors_per_block": "1",
+                        "dev.sectors_per_bucket": "1024",
+                        "dev.uuid": "ff51a56d-eddc-41b3-867d-8744277c5281",
+                        "sb.csum": "2F8BB7E8DC53E0B6 [match]",
+                        "sb.first_sector": "8 [match]",
+                        "sb.magic": "ok",
+                        "sb.version": "3 [cache device]"
+                    }
+                }
+            }
+        },
+        "blockdev": {
+            "/dev/bcache0": {
+                "DEVLINKS": "/dev/bcache/by-uuid/f36394c0-3cc0-4423-8d6f-ffac130f171a /dev/disk/by-uuid/45354276-e0c0-4bf6-9083-f130b89411cc /dev/disk/by-dname/bcache0",
+                "DEVNAME": "/dev/bcache0",
+                "DEVPATH": "/devices/virtual/block/bcache0",
+                "DEVTYPE": "disk",
+                "ID_FS_TYPE": "ext4",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "45354276-e0c0-4bf6-9083-f130b89411cc",
+                "ID_FS_UUID_ENC": "45354276-e0c0-4bf6-9083-f130b89411cc",
+                "ID_FS_VERSION": "1.0",
+                "MAJOR": "252",
+                "MINOR": "0",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "41032154",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bcache": null,
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "252:0",
+                    "discard_alignment": "0",
+                    "ext_range": "128",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "128",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "900202487808",
+                    "stat": " 7791002        0 236676214 14036404 11259210        0 1602715032 150396400        0 11388848 164434000   259911        0 1820167136     1196",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=252\nMINOR=0\nDEVNAME=bcache0\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd0": {
+                "DEVNAME": "/dev/nbd0",
+                "DEVPATH": "/devices/virtual/block/nbd0",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "0",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416610530",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:0",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "    2276        0    74612      507      185      117     2296       59        0      264        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=0\nDEVNAME=nbd0\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd1": {
+                "DEVNAME": "/dev/nbd1",
+                "DEVPATH": "/devices/virtual/block/nbd1",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "32",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416608225",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:32",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=32\nDEVNAME=nbd1\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd10": {
+                "DEVNAME": "/dev/nbd10",
+                "DEVPATH": "/devices/virtual/block/nbd10",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "320",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416612159",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:320",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=320\nDEVNAME=nbd10\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd11": {
+                "DEVNAME": "/dev/nbd11",
+                "DEVPATH": "/devices/virtual/block/nbd11",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "352",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416612517",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:352",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=352\nDEVNAME=nbd11\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd12": {
+                "DEVNAME": "/dev/nbd12",
+                "DEVPATH": "/devices/virtual/block/nbd12",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "384",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416610687",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:384",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=384\nDEVNAME=nbd12\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd13": {
+                "DEVNAME": "/dev/nbd13",
+                "DEVPATH": "/devices/virtual/block/nbd13",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "416",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416613964",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:416",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=416\nDEVNAME=nbd13\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd14": {
+                "DEVNAME": "/dev/nbd14",
+                "DEVPATH": "/devices/virtual/block/nbd14",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "448",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416614463",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:448",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=448\nDEVNAME=nbd14\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd15": {
+                "DEVNAME": "/dev/nbd15",
+                "DEVPATH": "/devices/virtual/block/nbd15",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "480",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416615067",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:480",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=480\nDEVNAME=nbd15\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd2": {
+                "DEVNAME": "/dev/nbd2",
+                "DEVPATH": "/devices/virtual/block/nbd2",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "64",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416607048",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:64",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=64\nDEVNAME=nbd2\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd3": {
+                "DEVNAME": "/dev/nbd3",
+                "DEVPATH": "/devices/virtual/block/nbd3",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "96",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416607356",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:96",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=96\nDEVNAME=nbd3\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd4": {
+                "DEVNAME": "/dev/nbd4",
+                "DEVPATH": "/devices/virtual/block/nbd4",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "128",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416611304",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:128",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=128\nDEVNAME=nbd4\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd5": {
+                "DEVNAME": "/dev/nbd5",
+                "DEVPATH": "/devices/virtual/block/nbd5",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "160",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416607636",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:160",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=160\nDEVNAME=nbd5\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd6": {
+                "DEVNAME": "/dev/nbd6",
+                "DEVPATH": "/devices/virtual/block/nbd6",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "192",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416608369",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:192",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=192\nDEVNAME=nbd6\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd7": {
+                "DEVNAME": "/dev/nbd7",
+                "DEVPATH": "/devices/virtual/block/nbd7",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "224",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416608728",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:224",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=224\nDEVNAME=nbd7\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd8": {
+                "DEVNAME": "/dev/nbd8",
+                "DEVPATH": "/devices/virtual/block/nbd8",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "256",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416610905",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:256",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=256\nDEVNAME=nbd8\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nbd9": {
+                "DEVNAME": "/dev/nbd9",
+                "DEVPATH": "/devices/virtual/block/nbd9",
+                "DEVTYPE": "disk",
+                "MAJOR": "43",
+                "MINOR": "288",
+                "SUBSYSTEM": "block",
+                "SYSTEMD_READY": "0",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "3043416609253",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "10",
+                    "dev": "43:288",
+                    "discard_alignment": "0",
+                    "ext_range": "32",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "32",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "0",
+                    "stat": "       0        0        0        0        0        0        0        0        0        0        0        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=43\nMINOR=288\nDEVNAME=nbd9\nDEVTYPE=disk"
+                }
+            },
+            "/dev/nvme0n1": {
+                "DEVLINKS": "/dev/disk/by-uuid/13976804636456298589 /dev/disk/by-id/nvme-INTEL_SSDPEDME400G4_CVMD4456000M400AGN /dev/disk/by-label/zfs-lxd /dev/disk/by-path/pci-0000:05:00.0-nvme-1 /dev/disk/by-dname/nvme0n1 /dev/disk/by-id/nvme-nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001",
+                "DEVNAME": "/dev/nvme0n1",
+                "DEVPATH": "/devices/pci0000:00/0000:00:02.0/0000:05:00.0/nvme/nvme0/nvme0n1",
+                "DEVTYPE": "disk",
+                "ID_FS_LABEL": "zfs-lxd",
+                "ID_FS_LABEL_ENC": "zfs-lxd",
+                "ID_FS_TYPE": "zfs_member",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "13976804636456298589",
+                "ID_FS_UUID_ENC": "13976804636456298589",
+                "ID_FS_UUID_SUB": "10416813983586022065",
+                "ID_FS_UUID_SUB_ENC": "10416813983586022065",
+                "ID_FS_VERSION": "5000",
+                "ID_MODEL": "INTEL SSDPEDME400G4",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "1d73687c-0668-4680-b827-165c9d1ce0be",
+                "ID_PATH": "pci-0000:05:00.0-nvme-1",
+                "ID_PATH_TAG": "pci-0000_05_00_0-nvme-1",
+                "ID_REVISION": "8DV10151",
+                "ID_SERIAL": "INTEL SSDPEDME400G4_CVMD4456000M400AGN",
+                "ID_SERIAL_SHORT": "CVMD4456000M400AGN",
+                "ID_WWN": "nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001",
+                "MAJOR": "259",
+                "MINOR": "0",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "6276789",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "50",
+                    "dev": "259:0",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "ext_range": "256",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "nsid": "1",
+                    "range": "0",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "400088457216",
+                    "stat": "50280626   705665 3198431464 39603860 210435613  9919031 38920382373 1179550000        0 83056004 921087080    56367        0 2058576136    67422",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=259\nMINOR=0\nDEVNAME=nvme0n1\nDEVTYPE=disk",
+                    "wwid": "nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001"
+                },
+                "partitiontable": {
+                    "device": "/dev/nvme0n1",
+                    "firstlba": 34,
+                    "id": "1D73687C-0668-4680-B827-165C9D1CE0BE",
+                    "label": "gpt",
+                    "lastlba": 781422734,
+                    "partitions": [
+                        {
+                            "node": "/dev/nvme0n1p1",
+                            "size": 234373120,
+                            "start": 2048,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "2A3296F5-905C-4BD9-835F-E764F564F3F1"
+                        },
+                        {
+                            "name": "Linux filesystem",
+                            "node": "/dev/nvme0n1p2",
+                            "size": 419430400,
+                            "start": 234375168,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "789835F9-0CA5-451A-AF2D-D642934D83A6"
+                        },
+                        {
+                            "name": "Linux filesystem",
+                            "node": "/dev/nvme0n1p3",
+                            "size": 127617167,
+                            "start": 653805568,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "B4B2F32D-271D-4CA5-B88D-0AE416347F28"
+                        }
+                    ],
+                    "unit": "sectors"
+                }
+            },
+            "/dev/nvme0n1p1": {
+                "DEVLINKS": "/dev/disk/by-path/pci-0000:05:00.0-nvme-1-part1 /dev/disk/by-label/zfs-lxd /dev/disk/by-uuid/ff51a56d-eddc-41b3-867d-8744277c5281 /dev/disk/by-id/nvme-INTEL_SSDPEDME400G4_CVMD4456000M400AGN-part1 /dev/disk/by-partuuid/2a3296f5-905c-4bd9-835f-e764f564f3f1 /dev/disk/by-id/nvme-nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001-part1 /dev/disk/by-dname/nvme0n1-part1",
+                "DEVNAME": "/dev/nvme0n1p1",
+                "DEVPATH": "/devices/pci0000:00/0000:00:02.0/0000:05:00.0/nvme/nvme0/nvme0n1/nvme0n1p1",
+                "DEVTYPE": "partition",
+                "ID_FS_LABEL": "zfs-lxd",
+                "ID_FS_LABEL_ENC": "zfs-lxd",
+                "ID_FS_TYPE": "bcache",
+                "ID_FS_USAGE": "other",
+                "ID_FS_UUID": "ff51a56d-eddc-41b3-867d-8744277c5281",
+                "ID_FS_UUID_ENC": "ff51a56d-eddc-41b3-867d-8744277c5281",
+                "ID_FS_UUID_SUB": "10416813983586022065",
+                "ID_FS_UUID_SUB_ENC": "10416813983586022065",
+                "ID_FS_VERSION": "5000",
+                "ID_MODEL": "INTEL SSDPEDME400G4",
+                "ID_PART_ENTRY_DISK": "259:0",
+                "ID_PART_ENTRY_NUMBER": "1",
+                "ID_PART_ENTRY_OFFSET": "2048",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "234373120",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "2a3296f5-905c-4bd9-835f-e764f564f3f1",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "1d73687c-0668-4680-b827-165c9d1ce0be",
+                "ID_PATH": "pci-0000:05:00.0-nvme-1",
+                "ID_PATH_TAG": "pci-0000_05_00_0-nvme-1",
+                "ID_REVISION": "8DV10151",
+                "ID_SERIAL": "INTEL SSDPEDME400G4_CVMD4456000M400AGN",
+                "ID_SERIAL_SHORT": "CVMD4456000M400AGN",
+                "ID_WWN": "nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001",
+                "MAJOR": "259",
+                "MINOR": "1",
+                "PARTN": "1",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "6287485",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "259:1",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "1",
+                    "ro": "0",
+                    "size": "234373120",
+                    "start": "2048",
+                    "stat": " 9337755   562555 328925348  4455389  6325795  5531292 434894034 14122566        0 15525696 14010916        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=259\nMINOR=1\nDEVNAME=nvme0n1p1\nDEVTYPE=partition\nPARTN=1"
+                }
+            },
+            "/dev/nvme0n1p2": {
+                "DEVLINKS": "/dev/disk/by-path/pci-0000:05:00.0-nvme-1-part2 /dev/disk/by-id/nvme-nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001-part2 /dev/disk/by-partuuid/789835f9-0ca5-451a-af2d-d642934d83a6 /dev/disk/by-id/nvme-INTEL_SSDPEDME400G4_CVMD4456000M400AGN-part2 /dev/disk/by-partlabel/Linux\\x20filesystem /dev/disk/by-label/zfs-lxd /dev/disk/by-uuid/a2223601-dc79-4acb-90f3-5ecff7055873",
+                "DEVNAME": "/dev/nvme0n1p2",
+                "DEVPATH": "/devices/pci0000:00/0000:00:02.0/0000:05:00.0/nvme/nvme0/nvme0n1/nvme0n1p2",
+                "DEVTYPE": "partition",
+                "ID_FS_LABEL": "zfs-lxd",
+                "ID_FS_LABEL_ENC": "zfs-lxd",
+                "ID_FS_TYPE": "ext4",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "a2223601-dc79-4acb-90f3-5ecff7055873",
+                "ID_FS_UUID_ENC": "a2223601-dc79-4acb-90f3-5ecff7055873",
+                "ID_FS_UUID_SUB": "10416813983586022065",
+                "ID_FS_UUID_SUB_ENC": "10416813983586022065",
+                "ID_FS_VERSION": "1.0",
+                "ID_MODEL": "INTEL SSDPEDME400G4",
+                "ID_PART_ENTRY_DISK": "259:0",
+                "ID_PART_ENTRY_NAME": "Linux\\x20filesystem",
+                "ID_PART_ENTRY_NUMBER": "2",
+                "ID_PART_ENTRY_OFFSET": "234375168",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "419430400",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "789835f9-0ca5-451a-af2d-d642934d83a6",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "1d73687c-0668-4680-b827-165c9d1ce0be",
+                "ID_PATH": "pci-0000:05:00.0-nvme-1",
+                "ID_PATH_TAG": "pci-0000_05_00_0-nvme-1",
+                "ID_REVISION": "8DV10151",
+                "ID_SERIAL": "INTEL SSDPEDME400G4_CVMD4456000M400AGN",
+                "ID_SERIAL_SHORT": "CVMD4456000M400AGN",
+                "ID_WWN": "nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001",
+                "MAJOR": "259",
+                "MINOR": "2",
+                "PARTN": "2",
+                "PARTNAME": "Linux filesystem",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "6301568",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "259:2",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "2",
+                    "ro": "0",
+                    "size": "419430400",
+                    "start": "234375168",
+                    "stat": "37737247   143041 2659437243 34151530 171661257  4387365 37560192374 1154346438        0 63567088 903257364    56367        0 2058576136    67422",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=259\nMINOR=2\nDEVNAME=nvme0n1p2\nDEVTYPE=partition\nPARTN=2\nPARTNAME=Linux filesystem"
+                }
+            },
+            "/dev/nvme0n1p3": {
+                "DEVLINKS": "/dev/disk/by-id/nvme-INTEL_SSDPEDME400G4_CVMD4456000M400AGN-part3 /dev/disk/by-partlabel/Linux\\x20filesystem /dev/disk/by-label/zfs-lxd /dev/disk/by-partuuid/b4b2f32d-271d-4ca5-b88d-0ae416347f28 /dev/disk/by-id/nvme-nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001-part3 /dev/disk/by-path/pci-0000:05:00.0-nvme-1-part3 /dev/disk/by-uuid/13976804636456298589",
+                "DEVNAME": "/dev/nvme0n1p3",
+                "DEVPATH": "/devices/pci0000:00/0000:00:02.0/0000:05:00.0/nvme/nvme0/nvme0n1/nvme0n1p3",
+                "DEVTYPE": "partition",
+                "ID_FS_LABEL": "zfs-lxd",
+                "ID_FS_LABEL_ENC": "zfs-lxd",
+                "ID_FS_TYPE": "zfs_member",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "13976804636456298589",
+                "ID_FS_UUID_ENC": "13976804636456298589",
+                "ID_FS_UUID_SUB": "10416813983586022065",
+                "ID_FS_UUID_SUB_ENC": "10416813983586022065",
+                "ID_FS_VERSION": "5000",
+                "ID_MODEL": "INTEL SSDPEDME400G4",
+                "ID_PART_ENTRY_DISK": "259:0",
+                "ID_PART_ENTRY_NAME": "Linux\\x20filesystem",
+                "ID_PART_ENTRY_NUMBER": "3",
+                "ID_PART_ENTRY_OFFSET": "653805568",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "127617167",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "b4b2f32d-271d-4ca5-b88d-0ae416347f28",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "1d73687c-0668-4680-b827-165c9d1ce0be",
+                "ID_PATH": "pci-0000:05:00.0-nvme-1",
+                "ID_PATH_TAG": "pci-0000_05_00_0-nvme-1",
+                "ID_REVISION": "8DV10151",
+                "ID_SERIAL": "INTEL SSDPEDME400G4_CVMD4456000M400AGN",
+                "ID_SERIAL_SHORT": "CVMD4456000M400AGN",
+                "ID_WWN": "nvme.8086-43564d44343435363030304d34303041474e-494e54454c205353445045444d453430304734-00000001",
+                "MAJOR": "259",
+                "MINOR": "3",
+                "PARTN": "3",
+                "PARTNAME": "Linux filesystem",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "6282698",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "259:3",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "3",
+                    "ro": "0",
+                    "size": "127617167",
+                    "start": "653805568",
+                    "stat": " 3205000       69 210062502   996903 32448561      374 925295965 11080995        0  6560644  3818800        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=259\nMINOR=3\nDEVNAME=nvme0n1p3\nDEVTYPE=partition\nPARTN=3\nPARTNAME=Linux filesystem"
+                }
+            },
+            "/dev/sda": {
+                "DEVLINKS": "/dev/disk/by-dname/sda /dev/disk/by-id/scsi-33001438034e549a0 /dev/disk/by-path/pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0 /dev/disk/by-id/wwn-0x3001438034e549a0",
+                "DEVNAME": "/dev/sda",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0/port-0:2/end_device-0:2/target0:0:1/0:0:1:0/block/sda",
+                "DEVTYPE": "disk",
+                "ID_BUS": "scsi",
+                "ID_MODEL": "MM1000GBKAL",
+                "ID_MODEL_ENC": "MM1000GBKAL\\x20\\x20\\x20\\x20\\x20",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "a19d045b-8666-4f44-9d95-bf510f4dba68",
+                "ID_PATH": "pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0",
+                "ID_PATH_TAG": "pci-0000_03_00_0-sas-0x3001438034e549a0-lun-0",
+                "ID_REVISION": "HPGC",
+                "ID_SCSI": "1",
+                "ID_SCSI_SERIAL": "9XG8HR8X",
+                "ID_SERIAL": "33001438034e549a0",
+                "ID_SERIAL_SHORT": "3001438034e549a0",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "ID_WWN": "0x3001438034e549a0",
+                "ID_WWN_WITH_EXTENSION": "0x3001438034e549a0",
+                "MAJOR": "8",
+                "MINOR": "0",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "5176541",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "50",
+                    "dev": "8:0",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "events": "",
+                    "events_async": "",
+                    "events_poll_msecs": "-1",
+                    "ext_range": "256",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "16",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "1000204886016",
+                    "stat": " 1128321   216001 95350342 10802257  2909200  1858096 1363423473 104257149        0 17496360 107850064        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=0\nDEVNAME=sda\nDEVTYPE=disk"
+                },
+                "partitiontable": {
+                    "device": "/dev/sda",
+                    "firstlba": 34,
+                    "id": "A19D045B-8666-4F44-9D95-BF510F4DBA68",
+                    "label": "gpt",
+                    "lastlba": 1953525134,
+                    "partitions": [
+                        {
+                            "node": "/dev/sda1",
+                            "size": 974848,
+                            "start": 2048,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "6347E694-3680-481F-B3B9-F13090855467"
+                        },
+                        {
+                            "node": "/dev/sda2",
+                            "size": 194330624,
+                            "start": 976896,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "2ED7D79E-33ED-40D2-9A7D-C645B67CE661"
+                        },
+                        {
+                            "node": "/dev/sda3",
+                            "size": 1758208000,
+                            "start": 195307520,
+                            "type": "0FC63DAF-8483-4772-8E79-3D69D8477DE4",
+                            "uuid": "F4662970-B21F-4797-9691-689784B30F04"
+                        }
+                    ],
+                    "unit": "sectors"
+                }
+            },
+            "/dev/sda1": {
+                "DEVLINKS": "/dev/disk/by-uuid/5B63-D29B /dev/disk/by-path/pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0-part1 /dev/disk/by-id/wwn-0x3001438034e549a0-part1 /dev/disk/by-partuuid/6347e694-3680-481f-b3b9-f13090855467 /dev/disk/by-id/scsi-33001438034e549a0-part1 /dev/disk/by-dname/sda-part1",
+                "DEVNAME": "/dev/sda1",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0/port-0:2/end_device-0:2/target0:0:1/0:0:1:0/block/sda/sda1",
+                "DEVTYPE": "partition",
+                "ID_BUS": "scsi",
+                "ID_FS_TYPE": "vfat",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "5B63-D29B",
+                "ID_FS_UUID_ENC": "5B63-D29B",
+                "ID_FS_VERSION": "FAT32",
+                "ID_MODEL": "MM1000GBKAL",
+                "ID_MODEL_ENC": "MM1000GBKAL\\x20\\x20\\x20\\x20\\x20",
+                "ID_PART_ENTRY_DISK": "8:0",
+                "ID_PART_ENTRY_NUMBER": "1",
+                "ID_PART_ENTRY_OFFSET": "2048",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "974848",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "6347e694-3680-481f-b3b9-f13090855467",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "a19d045b-8666-4f44-9d95-bf510f4dba68",
+                "ID_PATH": "pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0",
+                "ID_PATH_TAG": "pci-0000_03_00_0-sas-0x3001438034e549a0-lun-0",
+                "ID_REVISION": "HPGC",
+                "ID_SCSI": "1",
+                "ID_SCSI_SERIAL": "9XG8HR8X",
+                "ID_SERIAL": "33001438034e549a0",
+                "ID_SERIAL_SHORT": "3001438034e549a0",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "ID_WWN": "0x3001438034e549a0",
+                "ID_WWN_WITH_EXTENSION": "0x3001438034e549a0",
+                "MAJOR": "8",
+                "MINOR": "1",
+                "PARTN": "1",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "5305033",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "8:1",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "1",
+                    "ro": "0",
+                    "size": "499122176",
+                    "start": "2048",
+                    "stat": "    1076      858    29429     5864        1        0        1       21        0     1204     4868        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=1\nDEVNAME=sda1\nDEVTYPE=partition\nPARTN=1"
+                },
+                "partitiontable": {
+                    "device": "/dev/sda1",
+                    "id": "0x00000000",
+                    "label": "dos",
+                    "partitions": [],
+                    "unit": "sectors"
+                }
+            },
+            "/dev/sda2": {
+                "DEVLINKS": "/dev/disk/by-partuuid/2ed7d79e-33ed-40d2-9a7d-c645b67ce661 /dev/disk/by-path/pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0-part2 /dev/disk/by-dname/sda-part2 /dev/disk/by-uuid/4615b428-57c2-4f45-a14c-ff8d16502247 /dev/disk/by-id/wwn-0x3001438034e549a0-part2 /dev/disk/by-id/scsi-33001438034e549a0-part2",
+                "DEVNAME": "/dev/sda2",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0/port-0:2/end_device-0:2/target0:0:1/0:0:1:0/block/sda/sda2",
+                "DEVTYPE": "partition",
+                "ID_BUS": "scsi",
+                "ID_FS_TYPE": "ext4",
+                "ID_FS_USAGE": "filesystem",
+                "ID_FS_UUID": "4615b428-57c2-4f45-a14c-ff8d16502247",
+                "ID_FS_UUID_ENC": "4615b428-57c2-4f45-a14c-ff8d16502247",
+                "ID_FS_VERSION": "1.0",
+                "ID_MODEL": "MM1000GBKAL",
+                "ID_MODEL_ENC": "MM1000GBKAL\\x20\\x20\\x20\\x20\\x20",
+                "ID_PART_ENTRY_DISK": "8:0",
+                "ID_PART_ENTRY_NUMBER": "2",
+                "ID_PART_ENTRY_OFFSET": "976896",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "194330624",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "2ed7d79e-33ed-40d2-9a7d-c645b67ce661",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "a19d045b-8666-4f44-9d95-bf510f4dba68",
+                "ID_PATH": "pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0",
+                "ID_PATH_TAG": "pci-0000_03_00_0-sas-0x3001438034e549a0-lun-0",
+                "ID_REVISION": "HPGC",
+                "ID_SCSI": "1",
+                "ID_SCSI_SERIAL": "9XG8HR8X",
+                "ID_SERIAL": "33001438034e549a0",
+                "ID_SERIAL_SHORT": "3001438034e549a0",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "ID_WWN": "0x3001438034e549a0",
+                "ID_WWN_WITH_EXTENSION": "0x3001438034e549a0",
+                "MAJOR": "8",
+                "MINOR": "2",
+                "PARTN": "2",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "5240059",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "8:2",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "2",
+                    "ro": "0",
+                    "size": "99497279488",
+                    "start": "976896",
+                    "stat": "    1886        0   123268     6873     1449      572  1806376    72449        0     8912    74792        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=2\nDEVNAME=sda2\nDEVTYPE=partition\nPARTN=2"
+                }
+            },
+            "/dev/sda3": {
+                "DEVLINKS": "/dev/disk/by-dname/sda-part3 /dev/disk/by-uuid/f36394c0-3cc0-4423-8d6f-ffac130f171a /dev/disk/by-id/wwn-0x3001438034e549a0-part3 /dev/disk/by-partuuid/f4662970-b21f-4797-9691-689784b30f04 /dev/disk/by-path/pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0-part3 /dev/disk/by-id/scsi-33001438034e549a0-part3",
+                "DEVNAME": "/dev/sda3",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0/port-0:2/end_device-0:2/target0:0:1/0:0:1:0/block/sda/sda3",
+                "DEVTYPE": "partition",
+                "ID_BUS": "scsi",
+                "ID_FS_TYPE": "bcache",
+                "ID_FS_USAGE": "other",
+                "ID_FS_UUID": "f36394c0-3cc0-4423-8d6f-ffac130f171a",
+                "ID_FS_UUID_ENC": "f36394c0-3cc0-4423-8d6f-ffac130f171a",
+                "ID_MODEL": "MM1000GBKAL",
+                "ID_MODEL_ENC": "MM1000GBKAL\\x20\\x20\\x20\\x20\\x20",
+                "ID_PART_ENTRY_DISK": "8:0",
+                "ID_PART_ENTRY_NUMBER": "3",
+                "ID_PART_ENTRY_OFFSET": "195307520",
+                "ID_PART_ENTRY_SCHEME": "gpt",
+                "ID_PART_ENTRY_SIZE": "1758208000",
+                "ID_PART_ENTRY_TYPE": "0fc63daf-8483-4772-8e79-3d69d8477de4",
+                "ID_PART_ENTRY_UUID": "f4662970-b21f-4797-9691-689784b30f04",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "a19d045b-8666-4f44-9d95-bf510f4dba68",
+                "ID_PATH": "pci-0000:03:00.0-sas-0x3001438034e549a0-lun-0",
+                "ID_PATH_TAG": "pci-0000_03_00_0-sas-0x3001438034e549a0-lun-0",
+                "ID_REVISION": "HPGC",
+                "ID_SCSI": "1",
+                "ID_SCSI_SERIAL": "9XG8HR8X",
+                "ID_SERIAL": "33001438034e549a0",
+                "ID_SERIAL_SHORT": "3001438034e549a0",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "ID_WWN": "0x3001438034e549a0",
+                "ID_WWN_WITH_EXTENSION": "0x3001438034e549a0",
+                "MAJOR": "8",
+                "MINOR": "3",
+                "PARTN": "3",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "5344170",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "dev": "8:3",
+                    "discard_alignment": "0",
+                    "inflight": "       0        0",
+                    "partition": "3",
+                    "ro": "0",
+                    "size": "900202496000",
+                    "start": "195307520",
+                    "stat": " 1124125   215143 95168714 10787262  2907750  1857524 1361617096 104184679        0 17486360 107768572        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=3\nDEVNAME=sda3\nDEVTYPE=partition\nPARTN=3"
+                }
+            },
+            "/dev/sdb": {
+                "DEVLINKS": "/dev/disk/by-dname/sdb /dev/disk/by-path/pci-0000:03:00.0-sas-0x3001438034e549a1-lun-0 /dev/disk/by-id/scsi-33001438034e549a1 /dev/disk/by-id/wwn-0x3001438034e549a1",
+                "DEVNAME": "/dev/sdb",
+                "DEVPATH": "/devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0/port-0:3/end_device-0:3/target0:0:2/0:0:2:0/block/sdb",
+                "DEVTYPE": "disk",
+                "ID_BUS": "scsi",
+                "ID_MODEL": "MM1000GBKAL",
+                "ID_MODEL_ENC": "MM1000GBKAL\\x20\\x20\\x20\\x20\\x20",
+                "ID_PART_TABLE_TYPE": "gpt",
+                "ID_PART_TABLE_UUID": "b43975e4-0102-4e73-beaf-28c89fb7c168",
+                "ID_PATH": "pci-0000:03:00.0-sas-0x3001438034e549a1-lun-0",
+                "ID_PATH_TAG": "pci-0000_03_00_0-sas-0x3001438034e549a1-lun-0",
+                "ID_REVISION": "HPGC",
+                "ID_SCSI": "1",
+                "ID_SCSI_SERIAL": "9XG4LCPR",
+                "ID_SERIAL": "33001438034e549a1",
+                "ID_SERIAL_SHORT": "3001438034e549a1",
+                "ID_TYPE": "disk",
+                "ID_VENDOR": "ATA",
+                "ID_VENDOR_ENC": "ATA\\x20\\x20\\x20\\x20\\x20",
+                "ID_WWN": "0x3001438034e549a1",
+                "ID_WWN_WITH_EXTENSION": "0x3001438034e549a1",
+                "MAJOR": "8",
+                "MINOR": "16",
+                "SUBSYSTEM": "block",
+                "TAGS": ":systemd:",
+                "USEC_INITIALIZED": "5641291",
+                "attrs": {
+                    "alignment_offset": "0",
+                    "bdi": null,
+                    "capability": "50",
+                    "dev": "8:16",
+                    "device": null,
+                    "discard_alignment": "0",
+                    "events": "",
+                    "events_async": "",
+                    "events_poll_msecs": "-1",
+                    "ext_range": "256",
+                    "hidden": "0",
+                    "inflight": "       0        0",
+                    "range": "16",
+                    "removable": "0",
+                    "ro": "0",
+                    "size": "1000204886016",
+                    "stat": "     894        0    19635      335        0        0        0        0        0      576      120        0        0        0        0",
+                    "subsystem": "block",
+                    "uevent": "MAJOR=8\nMINOR=16\nDEVNAME=sdb\nDEVTYPE=disk"
+                },
+                "partitiontable": {
+                    "device": "/dev/sdb",
+                    "firstlba": 34,
+                    "id": "B43975E4-0102-4E73-BEAF-28C89FB7C168",
+                    "label": "gpt",
+                    "lastlba": 1953525134,
+                    "partitions": [],
+                    "unit": "sectors"
+                }
+            }
+        },
+        "dmcrypt": {},
+        "filesystem": {
+            "/dev/bcache0": {
+                "TYPE": "ext4",
+                "USAGE": "filesystem",
+                "UUID": "45354276-e0c0-4bf6-9083-f130b89411cc",
+                "UUID_ENC": "45354276-e0c0-4bf6-9083-f130b89411cc",
+                "VERSION": "1.0"
+            },
+            "/dev/nvme0n1": {
+                "LABEL": "zfs-lxd",
+                "LABEL_ENC": "zfs-lxd",
+                "TYPE": "zfs_member",
+                "USAGE": "filesystem",
+                "UUID": "13976804636456298589",
+                "UUID_ENC": "13976804636456298589",
+                "UUID_SUB": "10416813983586022065",
+                "UUID_SUB_ENC": "10416813983586022065",
+                "VERSION": "5000"
+            },
+            "/dev/nvme0n1p2": {
+                "LABEL": "zfs-lxd",
+                "LABEL_ENC": "zfs-lxd",
+                "TYPE": "ext4",
+                "USAGE": "filesystem",
+                "UUID": "a2223601-dc79-4acb-90f3-5ecff7055873",
+                "UUID_ENC": "a2223601-dc79-4acb-90f3-5ecff7055873",
+                "UUID_SUB": "10416813983586022065",
+                "UUID_SUB_ENC": "10416813983586022065",
+                "VERSION": "1.0"
+            },
+            "/dev/nvme0n1p3": {
+                "LABEL": "zfs-lxd",
+                "LABEL_ENC": "zfs-lxd",
+                "TYPE": "zfs_member",
+                "USAGE": "filesystem",
+                "UUID": "13976804636456298589",
+                "UUID_ENC": "13976804636456298589",
+                "UUID_SUB": "10416813983586022065",
+                "UUID_SUB_ENC": "10416813983586022065",
+                "VERSION": "5000"
+            },
+            "/dev/sda1": {
+                "TYPE": "vfat",
+                "USAGE": "filesystem",
+                "UUID": "5B63-D29B",
+                "UUID_ENC": "5B63-D29B",
+                "VERSION": "FAT32"
+            },
+            "/dev/sda2": {
+                "TYPE": "ext4",
+                "USAGE": "filesystem",
+                "UUID": "4615b428-57c2-4f45-a14c-ff8d16502247",
+                "UUID_ENC": "4615b428-57c2-4f45-a14c-ff8d16502247",
+                "VERSION": "1.0"
+            }
+        },
+        "lvm": {},
+        "mount": [
+            {
+                "children": [
+                    {
+                        "children": [
+                            {
+                                "fstype": "securityfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "securityfs",
+                                "target": "/sys/kernel/security"
+                            },
+                            {
+                                "children": [
+                                    {
+                                        "fstype": "cgroup2",
+                                        "options": "rw,nosuid,nodev,noexec,relatime",
+                                        "source": "cgroup2",
+                                        "target": "/sys/fs/cgroup/unified"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,xattr,name=systemd",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/systemd"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,cpu,cpuacct",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/cpu,cpuacct"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,net_cls,net_prio",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/net_cls,net_prio"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,freezer",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/freezer"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,hugetlb",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/hugetlb"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,rdma",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/rdma"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,perf_event",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/perf_event"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,pids",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/pids"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,cpuset",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/cpuset"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,blkio",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/blkio"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,memory",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/memory"
+                                    },
+                                    {
+                                        "fstype": "cgroup",
+                                        "options": "rw,nosuid,nodev,noexec,relatime,devices",
+                                        "source": "cgroup",
+                                        "target": "/sys/fs/cgroup/devices"
+                                    }
+                                ],
+                                "fstype": "tmpfs",
+                                "options": "ro,nosuid,nodev,noexec,mode=755",
+                                "source": "tmpfs",
+                                "target": "/sys/fs/cgroup"
+                            },
+                            {
+                                "fstype": "pstore",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "pstore",
+                                "target": "/sys/fs/pstore"
+                            },
+                            {
+                                "fstype": "efivarfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime",
+                                "source": "efivarfs",
+                                "target": "/sys/firmware/efi/efivars"
+                            },
+                            {
+                                "fstype": "bpf",
+                                "options": "rw,nosuid,nodev,noexec,relatime,mode=700",
+                                "source": "bpf",
+                                "target": "/sys/fs/bpf"
+                            },
+                            {
+                                "fstype": "debugfs",
+                                "options": "rw,relatime",
+                                "source": "debugfs",
+                                "target": "/sys/kernel/debug"
+                            },
+                            {
+                                "fstype": "configfs",
+                                "options": "rw,relatime",
+                                "source": "configfs",
+                                "target": "/sys/kernel/config"
+                            },
+                            {
+                                "fstype": "fusectl",
+                                "options": "rw,relatime",
+                                "source": "fusectl",
+                                "target": "/sys/fs/fuse/connections"
+                            }
+                        ],
+                        "fstype": "sysfs",
+                        "options": "rw,nosuid,nodev,noexec,relatime",
+                        "source": "sysfs",
+                        "target": "/sys"
+                    },
+                    {
+                        "children": [
+                            {
+                                "children": [
+                                    {
+                                        "fstype": "binfmt_misc",
+                                        "options": "rw,relatime",
+                                        "source": "binfmt_misc",
+                                        "target": "/proc/sys/fs/binfmt_misc"
+                                    }
+                                ],
+                                "fstype": "autofs",
+                                "options": "rw,relatime,fd=38,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=18010",
+                                "source": "systemd-1",
+                                "target": "/proc/sys/fs/binfmt_misc"
+                            }
+                        ],
+                        "fstype": "proc",
+                        "options": "rw,nosuid,nodev,noexec,relatime",
+                        "source": "proc",
+                        "target": "/proc"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "devpts",
+                                "options": "rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000",
+                                "source": "devpts",
+                                "target": "/dev/pts"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev",
+                                "source": "tmpfs",
+                                "target": "/dev/shm"
+                            },
+                            {
+                                "fstype": "hugetlbfs",
+                                "options": "rw,relatime,pagesize=2M",
+                                "source": "hugetlbfs",
+                                "target": "/dev/hugepages"
+                            },
+                            {
+                                "fstype": "mqueue",
+                                "options": "rw,relatime",
+                                "source": "mqueue",
+                                "target": "/dev/mqueue"
+                            }
+                        ],
+                        "fstype": "devtmpfs",
+                        "options": "rw,nosuid,relatime,size=16367252k,nr_inodes=4091813,mode=755",
+                        "source": "udev",
+                        "target": "/dev"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,noexec,relatime,size=5120k",
+                                "source": "tmpfs",
+                                "target": "/run/lock"
+                            },
+                            {
+                                "children": [
+                                    {
+                                        "fstype": "nsfs",
+                                        "options": "rw",
+                                        "source": "nsfs[mnt:[4026532868]]",
+                                        "target": "/run/snapd/ns/lxd.mnt"
+                                    }
+                                ],
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,noexec,relatime,size=3280384k,mode=755",
+                                "source": "tmpfs[/snapd/ns]",
+                                "target": "/run/snapd/ns"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,relatime,size=3280384k,mode=700,uid=1001,gid=1001",
+                                "source": "tmpfs",
+                                "target": "/run/user/1001"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,relatime,size=3280384k,mode=700,uid=1002,gid=1002",
+                                "source": "tmpfs",
+                                "target": "/run/user/1002"
+                            },
+                            {
+                                "fstype": "tmpfs",
+                                "options": "rw,nosuid,nodev,relatime,size=3280384k,mode=700,uid=1011,gid=1014",
+                                "source": "tmpfs",
+                                "target": "/run/user/1011"
+                            }
+                        ],
+                        "fstype": "tmpfs",
+                        "options": "rw,nosuid,noexec,relatime,size=3280384k,mode=755",
+                        "source": "tmpfs",
+                        "target": "/run"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop2",
+                        "target": "/snap/juju/7729"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop3",
+                        "target": "/snap/git-ubuntu/450"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop9",
+                        "target": "/snap/juju/7598"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop18",
+                        "target": "/snap/ubuntu-image/141"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop0",
+                        "target": "/snap/image-status/26"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop1",
+                        "target": "/snap/core/6531"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop25",
+                        "target": "/snap/ubuntu-image/139"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop7",
+                        "target": "/snap/multipass/587"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop28",
+                        "target": "/snap/ubuntu-image/143"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "vfat",
+                                "options": "rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro",
+                                "source": "/dev/sda1",
+                                "target": "/boot/efi"
+                            }
+                        ],
+                        "fstype": "ext4",
+                        "options": "rw,relatime",
+                        "source": "/dev/sda2",
+                        "target": "/boot"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop13",
+                        "target": "/snap/image-status/1"
+                    },
+                    {
+                        "fstype": "ext4",
+                        "options": "rw,relatime",
+                        "source": "/dev/nvme0n1p2",
+                        "target": "/srv"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop14",
+                        "target": "/snap/ubuntu-bug-triage/66"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop15",
+                        "target": "/snap/image-status/3"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop20",
+                        "target": "/snap/cmadison/3"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop22",
+                        "target": "/snap/cmadison/2"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop19",
+                        "target": "/snap/ubuntu-bug-triage/91"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop8",
+                        "target": "/snap/multipass/752"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop26",
+                        "target": "/snap/juju/7686"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop11",
+                        "target": "/snap/lxd/10601"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop5",
+                        "target": "/snap/lxd/10756"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop10",
+                        "target": "/snap/core/6818"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop27",
+                        "target": "/snap/git-ubuntu/451"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop24",
+                        "target": "/snap/ubuntu-bug-triage/95"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop6",
+                        "target": "/snap/core/6673"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop12",
+                        "target": "/snap/git-ubuntu/449"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop4",
+                        "target": "/snap/multipass/716"
+                    },
+                    {
+                        "fstype": "squashfs",
+                        "options": "ro,nodev,relatime",
+                        "source": "/dev/loop23",
+                        "target": "/snap/lxd/10526"
+                    },
+                    {
+                        "children": [
+                            {
+                                "fstype": "nsfs",
+                                "options": "rw",
+                                "source": "nsfs[mnt:[4026532851]]",
+                                "target": "/var/snap/lxd/common/ns/shmounts"
+                            }
+                        ],
+                        "fstype": "tmpfs",
+                        "options": "rw,relatime,size=1024k,mode=700",
+                        "source": "tmpfs",
+                        "target": "/var/snap/lxd/common/ns"
+                    }
+                ],
+                "fstype": "ext4",
+                "options": "rw,relatime",
+                "source": "/dev/bcache0",
+                "target": "/"
+            }
+        ],
+        "multipath": {},
+        "raid": {},
+        "zfs": {
+            "zpools": {
+                "zfs-lxd": {
+                    "datasets": {
+                        "zfs-lxd": {
+                            "properties": {
+                                "aclinherit": {
+                                    "source": "default",
+                                    "value": "restricted"
+                                },
+                                "acltype": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "atime": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "available": {
+                                    "source": "-",
+                                    "value": "27543762944"
+                                },
+                                "canmount": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "casesensitivity": {
+                                    "source": "-",
+                                    "value": "sensitive"
+                                },
+                                "checksum": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "compression": {
+                                    "source": "local",
+                                    "value": "on"
+                                },
+                                "compressratio": {
+                                    "source": "-",
+                                    "value": "1.89"
+                                },
+                                "context": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "copies": {
+                                    "source": "default",
+                                    "value": "1"
+                                },
+                                "createtxg": {
+                                    "source": "-",
+                                    "value": "1"
+                                },
+                                "creation": {
+                                    "source": "-",
+                                    "value": "1528992782"
+                                },
+                                "dedup": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "defcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "devices": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "dnodesize": {
+                                    "source": "default",
+                                    "value": "legacy"
+                                },
+                                "exec": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "filesystem_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "filesystem_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "fscontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "guid": {
+                                    "source": "-",
+                                    "value": "13025381288287755859"
+                                },
+                                "logbias": {
+                                    "source": "default",
+                                    "value": "latency"
+                                },
+                                "logicalreferenced": {
+                                    "source": "-",
+                                    "value": "12288"
+                                },
+                                "logicalused": {
+                                    "source": "-",
+                                    "value": "66775106560"
+                                },
+                                "mlslabel": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "mounted": {
+                                    "source": "-",
+                                    "value": "no"
+                                },
+                                "mountpoint": {
+                                    "source": "local",
+                                    "value": "none"
+                                },
+                                "nbmand": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "normalization": {
+                                    "source": "-",
+                                    "value": "none"
+                                },
+                                "overlay": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "primarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "quota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "readonly": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "recordsize": {
+                                    "source": "default",
+                                    "value": "131072"
+                                },
+                                "redundant_metadata": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "refcompressratio": {
+                                    "source": "-",
+                                    "value": "1.00"
+                                },
+                                "referenced": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "refquota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "refreservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "relatime": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "reservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "rootcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "secondarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "setuid": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "sharenfs": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "sharesmb": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "snapdev": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapdir": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapshot_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "snapshot_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "sync": {
+                                    "source": "default",
+                                    "value": "standard"
+                                },
+                                "type": {
+                                    "source": "-",
+                                    "value": "filesystem"
+                                },
+                                "used": {
+                                    "source": "-",
+                                    "value": "35387574272"
+                                },
+                                "usedbychildren": {
+                                    "source": "-",
+                                    "value": "35387549696"
+                                },
+                                "usedbydataset": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "usedbyrefreservation": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbysnapshots": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "utf8only": {
+                                    "source": "-",
+                                    "value": "off"
+                                },
+                                "version": {
+                                    "source": "-",
+                                    "value": "5"
+                                },
+                                "volmode": {
+                                    "source": "default",
+                                    "value": "default"
+                                },
+                                "vscan": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "written": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "xattr": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "zoned": {
+                                    "source": "default",
+                                    "value": "off"
+                                }
+                            }
+                        },
+                        "zfs-lxd/containers": {
+                            "properties": {
+                                "aclinherit": {
+                                    "source": "default",
+                                    "value": "restricted"
+                                },
+                                "acltype": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "atime": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "available": {
+                                    "source": "-",
+                                    "value": "27543762944"
+                                },
+                                "canmount": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "casesensitivity": {
+                                    "source": "-",
+                                    "value": "sensitive"
+                                },
+                                "checksum": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "compression": {
+                                    "source": "inherited from zfs-lxd",
+                                    "value": "on"
+                                },
+                                "compressratio": {
+                                    "source": "-",
+                                    "value": "1.92"
+                                },
+                                "context": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "copies": {
+                                    "source": "default",
+                                    "value": "1"
+                                },
+                                "createtxg": {
+                                    "source": "-",
+                                    "value": "6"
+                                },
+                                "creation": {
+                                    "source": "-",
+                                    "value": "1528992782"
+                                },
+                                "dedup": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "defcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "devices": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "dnodesize": {
+                                    "source": "default",
+                                    "value": "legacy"
+                                },
+                                "exec": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "filesystem_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "filesystem_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "fscontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "guid": {
+                                    "source": "-",
+                                    "value": "10922728633316508647"
+                                },
+                                "logbias": {
+                                    "source": "default",
+                                    "value": "latency"
+                                },
+                                "logicalreferenced": {
+                                    "source": "-",
+                                    "value": "12288"
+                                },
+                                "logicalused": {
+                                    "source": "-",
+                                    "value": "53562651648"
+                                },
+                                "mlslabel": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "mounted": {
+                                    "source": "-",
+                                    "value": "no"
+                                },
+                                "mountpoint": {
+                                    "source": "local",
+                                    "value": "none"
+                                },
+                                "nbmand": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "normalization": {
+                                    "source": "-",
+                                    "value": "none"
+                                },
+                                "overlay": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "primarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "quota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "readonly": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "recordsize": {
+                                    "source": "default",
+                                    "value": "131072"
+                                },
+                                "redundant_metadata": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "refcompressratio": {
+                                    "source": "-",
+                                    "value": "1.00"
+                                },
+                                "referenced": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "refquota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "refreservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "relatime": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "reservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "rootcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "secondarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "setuid": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "sharenfs": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "sharesmb": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "snapdev": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapdir": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapshot_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "snapshot_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "sync": {
+                                    "source": "default",
+                                    "value": "standard"
+                                },
+                                "type": {
+                                    "source": "-",
+                                    "value": "filesystem"
+                                },
+                                "used": {
+                                    "source": "-",
+                                    "value": "27919717888"
+                                },
+                                "usedbychildren": {
+                                    "source": "-",
+                                    "value": "27919693312"
+                                },
+                                "usedbydataset": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "usedbyrefreservation": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbysnapshots": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "utf8only": {
+                                    "source": "-",
+                                    "value": "off"
+                                },
+                                "version": {
+                                    "source": "-",
+                                    "value": "5"
+                                },
+                                "volmode": {
+                                    "source": "default",
+                                    "value": "default"
+                                },
+                                "vscan": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "written": {
+                                    "source": "-",
+                                    "value": "24576"
+                                },
+                                "xattr": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "zoned": {
+                                    "source": "default",
+                                    "value": "off"
+                                }
+                            }
+                        },
+                        "zfs-lxd/containers/andreas-cosmic-mongodb": {
+                            "properties": {
+                                "aclinherit": {
+                                    "source": "default",
+                                    "value": "restricted"
+                                },
+                                "acltype": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "atime": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "available": {
+                                    "source": "-",
+                                    "value": "27543762944"
+                                },
+                                "canmount": {
+                                    "source": "local",
+                                    "value": "noauto"
+                                },
+                                "casesensitivity": {
+                                    "source": "-",
+                                    "value": "sensitive"
+                                },
+                                "checksum": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "compression": {
+                                    "source": "inherited from zfs-lxd",
+                                    "value": "on"
+                                },
+                                "compressratio": {
+                                    "source": "-",
+                                    "value": "2.31"
+                                },
+                                "context": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "copies": {
+                                    "source": "default",
+                                    "value": "1"
+                                },
+                                "createtxg": {
+                                    "source": "-",
+                                    "value": "4756245"
+                                },
+                                "creation": {
+                                    "source": "-",
+                                    "value": "1553280441"
+                                },
+                                "dedup": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "defcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "devices": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "dnodesize": {
+                                    "source": "default",
+                                    "value": "legacy"
+                                },
+                                "exec": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "filesystem_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "filesystem_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "fscontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "guid": {
+                                    "source": "-",
+                                    "value": "18350500034647316947"
+                                },
+                                "logbias": {
+                                    "source": "default",
+                                    "value": "latency"
+                                },
+                                "logicalreferenced": {
+                                    "source": "-",
+                                    "value": "33654733824"
+                                },
+                                "logicalused": {
+                                    "source": "-",
+                                    "value": "32866620928"
+                                },
+                                "mlslabel": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "mounted": {
+                                    "source": "-",
+                                    "value": "no"
+                                },
+                                "mountpoint": {
+                                    "source": "local",
+                                    "value": "/var/snap/lxd/common/lxd/storage-pools/zfs-lxd/containers/andreas-cosmic-mongodb"
+                                },
+                                "nbmand": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "normalization": {
+                                    "source": "-",
+                                    "value": "none"
+                                },
+                                "origin": {
+                                    "source": "-",
+                                    "value": "zfs-lxd/deleted/images/1650846799559e33e536cd8f4576d3c4e8d79c15e445c293471587abe55a805f@readonly"
+                                },
+                                "overlay": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "primarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "quota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "readonly": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "recordsize": {
+                                    "source": "default",
+                                    "value": "131072"
+                                },
+                                "redundant_metadata": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "refcompressratio": {
+                                    "source": "-",
+                                    "value": "2.29"
+                                },
+                                "referenced": {
+                                    "source": "-",
+                                    "value": "14717420544"
+                                },
+                                "refquota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "refreservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "relatime": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "reservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "rootcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "secondarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "setuid": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "sharenfs": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "sharesmb": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "snapdev": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapdir": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapshot_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "snapshot_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "sync": {
+                                    "source": "default",
+                                    "value": "standard"
+                                },
+                                "type": {
+                                    "source": "-",
+                                    "value": "filesystem"
+                                },
+                                "used": {
+                                    "source": "-",
+                                    "value": "14237662208"
+                                },
+                                "usedbychildren": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbydataset": {
+                                    "source": "-",
+                                    "value": "14237662208"
+                                },
+                                "usedbyrefreservation": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbysnapshots": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "utf8only": {
+                                    "source": "-",
+                                    "value": "off"
+                                },
+                                "version": {
+                                    "source": "-",
+                                    "value": "5"
+                                },
+                                "volmode": {
+                                    "source": "default",
+                                    "value": "default"
+                                },
+                                "vscan": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "written": {
+                                    "source": "-",
+                                    "value": "14237662208"
+                                },
+                                "xattr": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "zoned": {
+                                    "source": "default",
+                                    "value": "off"
+                                }
+                            }
+                        },
+                        "zfs-lxd/containers/andreas-cosmici386-mothur": {
+                            "properties": {
+                                "aclinherit": {
+                                    "source": "default",
+                                    "value": "restricted"
+                                },
+                                "acltype": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "atime": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "available": {
+                                    "source": "-",
+                                    "value": "27543762944"
+                                },
+                                "canmount": {
+                                    "source": "local",
+                                    "value": "noauto"
+                                },
+                                "casesensitivity": {
+                                    "source": "-",
+                                    "value": "sensitive"
+                                },
+                                "checksum": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "compression": {
+                                    "source": "inherited from zfs-lxd",
+                                    "value": "on"
+                                },
+                                "compressratio": {
+                                    "source": "-",
+                                    "value": "1.88"
+                                },
+                                "context": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "copies": {
+                                    "source": "default",
+                                    "value": "1"
+                                },
+                                "createtxg": {
+                                    "source": "-",
+                                    "value": "5096275"
+                                },
+                                "creation": {
+                                    "source": "-",
+                                    "value": "1553893679"
+                                },
+                                "dedup": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "defcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "devices": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "dnodesize": {
+                                    "source": "default",
+                                    "value": "legacy"
+                                },
+                                "exec": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "filesystem_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "filesystem_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "fscontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "guid": {
+                                    "source": "-",
+                                    "value": "6258600806920849973"
+                                },
+                                "logbias": {
+                                    "source": "default",
+                                    "value": "latency"
+                                },
+                                "logicalreferenced": {
+                                    "source": "-",
+                                    "value": "4612554752"
+                                },
+                                "logicalused": {
+                                    "source": "-",
+                                    "value": "3843475456"
+                                },
+                                "mlslabel": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "mounted": {
+                                    "source": "-",
+                                    "value": "no"
+                                },
+                                "mountpoint": {
+                                    "source": "local",
+                                    "value": "/var/snap/lxd/common/lxd/storage-pools/zfs-lxd/containers/andreas-cosmici386-mothur"
+                                },
+                                "nbmand": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "normalization": {
+                                    "source": "-",
+                                    "value": "none"
+                                },
+                                "origin": {
+                                    "source": "-",
+                                    "value": "zfs-lxd/deleted/images/d7d4cfa08c1f19fe6f266befcb8499a6b6f2149b520b35106344be11124398b4@readonly"
+                                },
+                                "overlay": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "primarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "quota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "readonly": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "recordsize": {
+                                    "source": "default",
+                                    "value": "131072"
+                                },
+                                "redundant_metadata": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "refcompressratio": {
+                                    "source": "-",
+                                    "value": "1.83"
+                                },
+                                "referenced": {
+                                    "source": "-",
+                                    "value": "2525002752"
+                                },
+                                "refquota": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "refreservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "relatime": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "reservation": {
+                                    "source": "default",
+                                    "value": "0"
+                                },
+                                "rootcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "secondarycache": {
+                                    "source": "default",
+                                    "value": "all"
+                                },
+                                "setuid": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "sharenfs": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "sharesmb": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "snapdev": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapdir": {
+                                    "source": "default",
+                                    "value": "hidden"
+                                },
+                                "snapshot_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "snapshot_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "sync": {
+                                    "source": "default",
+                                    "value": "standard"
+                                },
+                                "type": {
+                                    "source": "-",
+                                    "value": "filesystem"
+                                },
+                                "used": {
+                                    "source": "-",
+                                    "value": "2051683840"
+                                },
+                                "usedbychildren": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbydataset": {
+                                    "source": "-",
+                                    "value": "2051683840"
+                                },
+                                "usedbyrefreservation": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "usedbysnapshots": {
+                                    "source": "-",
+                                    "value": "0"
+                                },
+                                "utf8only": {
+                                    "source": "-",
+                                    "value": "off"
+                                },
+                                "version": {
+                                    "source": "-",
+                                    "value": "5"
+                                },
+                                "volmode": {
+                                    "source": "default",
+                                    "value": "default"
+                                },
+                                "vscan": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "written": {
+                                    "source": "-",
+                                    "value": "2051683840"
+                                },
+                                "xattr": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "zoned": {
+                                    "source": "default",
+                                    "value": "off"
+                                }
+                            }
+                        },
+                        "zfs-lxd/containers/bionic-proposed-1563111558": {
+                            "properties": {
+                                "aclinherit": {
+                                    "source": "default",
+                                    "value": "restricted"
+                                },
+                                "acltype": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "atime": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "available": {
+                                    "source": "-",
+                                    "value": "27543762944"
+                                },
+                                "canmount": {
+                                    "source": "local",
+                                    "value": "noauto"
+                                },
+                                "casesensitivity": {
+                                    "source": "-",
+                                    "value": "sensitive"
+                                },
+                                "checksum": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "compression": {
+                                    "source": "inherited from zfs-lxd",
+                                    "value": "on"
+                                },
+                                "compressratio": {
+                                    "source": "-",
+                                    "value": "1.00"
+                                },
+                                "context": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "copies": {
+                                    "source": "default",
+                                    "value": "1"
+                                },
+                                "createtxg": {
+                                    "source": "-",
+                                    "value": "4347914"
+                                },
+                                "creation": {
+                                    "source": "-",
+                                    "value": "1551202367"
+                                },
+                                "dedup": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "defcontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "devices": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "dnodesize": {
+                                    "source": "default",
+                                    "value": "legacy"
+                                },
+                                "exec": {
+                                    "source": "default",
+                                    "value": "on"
+                                },
+                                "filesystem_count": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "filesystem_limit": {
+                                    "source": "default",
+                                    "value": "18446744073709551615"
+                                },
+                                "fscontext": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "guid": {
+                                    "source": "-",
+                                    "value": "9613689284689146091"
+                                },
+                                "logbias": {
+                                    "source": "default",
+                                    "value": "latency"
+                                },
+                                "logicalreferenced": {
+                                    "source": "-",
+                                    "value": "678938624"
+                                },
+                                "logicalused": {
+                                    "source": "-",
+                                    "value": "2898432"
+                                },
+                                "mlslabel": {
+                                    "source": "default",
+                                    "value": "none"
+                                },
+                                "mounted": {
+                                    "source": "-",
+                                    "value": "no"
+                                },
+                                "mountpoint": {
+                                    "source": "local",
+                                    "value": "/var/snap/lxd/common/lxd/storage-pools/zfs-lxd/containers/bionic-proposed-1563111558"
+                                },
+                                "nbmand": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "normalization": {
+                                    "source": "-",
+                                    "value": "none"
+                                },
+                                "origin": {
+                                    "source": "-",
+                                    "value": "zfs-lxd/deleted/images/e195799c04654a382216bd3b138a099226aac00b092d864e0b9fc4785e9aec62@readonly"
+                                },
+                                "overlay": {
+                                    "source": "default",
+                                    "value": "off"
+                                },
+                                "primarycache": {
+                                    "source": "default",