system_upgrade: yum subcommands needs to be an iterable
Yum system-upgrade subcommands configuration was a string which
resulted in submitting incorrect commands to subp.
Rework unittests which make multiple install/upgrade commands and
fix how we clear the mocked subp object to remove previous calls
before asserting we have the same calls to subp from a different
path.
distro: fix system_upgrade command using string instead of function
The distro system_upgrade configuration dictionary used a string
for the name of the function to call which resulted in attempting
to call a string type which failed. This was found in CI running
proposed upgrade testing.
The fix is to use the function name itself rather than string.
This branch also adds unittest for invoking the system_upgrade path.
Newer lxd (3.4+) 'file' command now produces progress info in some
cases written to stdout. This breaks curtin-from-container which
is invoked with the 'pack' curtin command which also writes to stdout.
The result was a corrupt curtin package output file which left all
vmtests sitting idle in the ephemeral boot phase and timing out.
To resolve, we capture stdout from lxc file push and report
the contents if file push fails.
vmtest: boot ephemeral with 'ro' on the kernel command line.
As raised in bug 1792905, when 'ro' is present in on the kernel command
line and the squashfs (rooturl=) parameter does not have a /lib/modules
then copymods fails to copy the modules into the "real root" and
things fail.
Maas is booting with 'ro', so it makes sense for curtin to do the same.
Additionally, 'ro' is present in almost all cases on a command line.
The bug is marked as fix-released (cosmic), and not fixed in bionic.
Our tests still fail in cosmic though, so kick this along while we figure
that out.
tools/jenkins-runner: Error if both filters and tests are given.
Previously if you gave both '--filter' and 'tests/vmtests/' arguments
to tools/jenkins-runner it would just silently ignore the test arguments.
Just fail instead of doing the wrong thing, and possibly leaving the user
believing that the tests they provided correctly ran.
vmtests: prevent tests from modifying cls.collect_scripts
vmtests now has a set of collect scripts which are shared in all
subclassed tests and should not be modifed by the subclass. Fix
test_lvm_raid.py which modified cls.collect_scripts to use
extra_collect_scripts and update the base class to raise a RuntimeError
if a subclass presents a modified cls.collect_scripts.
Enable custom storage configuration for centos images
Add support for the majority of storage configurations including
partitioning, lvm, raid, iscsi and combinations of these. Some
storage configs are unsupported at this time:
Unsupported storage config options on Centos:
- bcache (no kernel support)
- zfs (no kernel support)
- jfs, ntfs, reiserfs (no kernel, userspace support)
Curtin's built-in curthooks now support Centos in addition
to Ubuntu. The built-in curthooks are now callable by
in-image curthooks. This feature is announced by the
presence of the feature flag, 'CENTOS_CURTHOOK_SUPPORT'
Other notable features added:
- tools/jenkins-runner now includes a test filtering
ability which enables generating the list of tests to
run by specifying attributes of the classes. For example
to run all centos70 tests append:
--filter=target_release=centos70
- curtin/distro.py includes distro specific methods, such as
package install and distro version detection
- util.target_path has now moved to curtin.paths module
