Syncdaemon not running (ValuerError: mmap offset is greater than file size)

Hello, can you please paste the output of running this command in a terminal?

u1sdtool -q; python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon

Thanks!

I have exactly the same problem. The above command returns this:

$ u1sdtool -q; python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon
ubuntuone-syncdaemon still running.
Another instance is running

PS: I am running Ubuntu 11.10

Hello Tobias,

Can you please run the following:

u1sdtool -s
killall ubuntuone-syncdaemon
python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon

And paste the output here? Thanks!

Hi Natalia,

Thanks for helping! This is the output of the above commands:

$ u1sdtool -s

Oops, an error ocurred:
Traceback (most recent call last):
Failure: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownMethod: Method "current_status" with signature "" on interface "com.ubuntuone.SyncDaemon.Status" doesn't exist

$ killall ubuntuone-syncdaemon
$ python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon

The last command does not terminate or show any output.

Regards,
Tobias

PS: killing the last of the three commands with Ctrl+C gives:

Unhandled error in Deferred:
Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/ubuntuone-client/ubuntuone-syncdaemon", line 227, in <module>
    main(sys.argv)
  File "/usr/lib/ubuntuone-client/ubuntuone-syncdaemon", line 91, in main
    d = async_main(parser, options, argv)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1141, in unwindGenerator
    return _inlineCallbacks(None, f(*args, **kwargs), Deferred())
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1020, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/ubuntuone-client/ubuntuone-syncdaemon", line 191, in async_main
    oauth_credentials=oauth_credentials)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/main.py", line 102, in __init__
    self.db = tritcask.Tritcask(self.tritcask_dir)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/tritcask.py", line 612, in __init__
    self._build_keydir()
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/tritcask.py", line 760, in _build_keydir
    self._load_from_hint(data_file)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/tritcask.py", line 776, in _load_from_hint
    for hint_entry in hint_file.iter_entries():
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/tritcask.py", line 446, in iter_entries
    fmap = mmap.mmap(self.fd.fileno(), 0, access=mmap.ACCESS_READ)
exceptions.ValueError: mmap offset is greater than file size

Hello Tobias!

Can you please compress and attach the Ubuntu One logs? Those are located under:

~/.cache/ubuntuone/log

Thanks!

These are the log files.

Hello Tobias!

Thanks for the logs. Would you please paste the output of running the following in a terminal:

ls -la ~/.local/share/ubuntuone/syncdaemon/tritcask

Natalia.

$ ls -la ~/.local/share/ubuntuone/syncdaemon/tritcask
total 2480
drwxr-xr-x 2 tk tk 16384 2011-11-10 18:02 .
drwxr-xr-x 5 tk tk 4096 2011-03-22 13:09 ..
-rw-rw-r-- 1 tk tk 1363974 2011-11-09 20:33 1320867214014308.inactive.tritcask-v1.data
-rw-rw-r-- 1 tk tk 149250 2011-11-09 20:33 1320867214014308.inactive.tritcask-v1.data.hint
-rw-rw-r-- 1 tk tk 20866 2011-11-09 20:40 1320867214579799.inactive.tritcask-v1.data
-rw-rw-r-- 1 tk tk 0 2011-11-10 18:02 1320867214579799.inactive.tritcask-v1.data.hint
-rw-rw-r-- 1 tk tk 911680 2011-11-10 16:45 1320907348351455.inactive.tritcask-v1.data
-rw-rw-r-- 1 tk tk 26012 2011-11-10 21:07 1320944572535788.live.tritcask-v1.data

Thanks for the info!

The workaround for this is killing syncdamon, removing the .hint file that has 0 bytes size, and restart the syncdaemon.
To do that, in a terminal, please run the following:

killall ubuntuone-syncdaemon
rm ~/.local/share/ubuntuone/syncdaemon/tritcask/1320867214579799.inactive.tritcask-v1.data.hint
python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon --debug

And let me know how it went.
Thanks, Natalia.

The workaround seems to work! File synchronization is still running, as it has to keep up with all the accumulated changes, but as far as I can tell synchronization works now.

Thanks for the quick help!

Hi Tobias!

I'm glad it worked. Nevertheless, a user should never have a 0-bytes hint file, so I'm assigning this to the proper person so we can fix this bug.

Thanks!

Hi,

Three days later, it still works! That's the good news. The bad news is: There is no "Ubuntu One" menu entry anymore in the context menu. So, I cannot add new folders. I think this problem appeared after applying the workaround for the bug described above, but it might be an unrelated issue...

Cheers,
Tobias

This bug was fixed in the package ubuntuone-client - 2.99.1-0ubuntu1

---------------
ubuntuone-client (2.99.1-0ubuntu1) precise; urgency=low

  * New upstream release.
    - Avoid using hint files with size 0. (LP: #825366)
    - Use g_return_if_fail to avoid NULL for important args (LP: #908805)
    - Don't register a new VOID__POINTER marshaller for dbus as it breaks now
      (LP: #908787, LP: #908261)
  * debian/watch:
    - Point at the release milestone
 -- Rodney Dawes <email address hidden> Wed, 04 Jan 2012 09:44:36 -0500

Hello Tony, or anyone else affected,

Accepted ubuntuone-client into oneiric-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Tested as follows:
With -updates only:
 1 In ~/.local/share/ubuntuone/syncdaemon/tritcask i truncated a hint file to 0
 1 Started syncdaemon. It did not run, killing syncdaemon printed the ValueError as seen in the bug description.

Updated to -proposed, started syncdaemon. It started successfully and processed the queued files.

This bug was fixed in the package ubuntuone-client - 2.0.1-0ubuntu1

---------------
ubuntuone-client (2.0.1-0ubuntu1) oneiric-proposed; urgency=low

  * New upstream release.
    - Avoid connection failure when timestamp invalid. (LP: #692597)
    - Files in new folders not uploaded due to filtering. (LP: #869920)
    - Sync daemon not running (mmap ValueError). (LP: #825366)
    - Typo in man page for "paths." (LP: #682954)
    - Apport recipe attaches old and useless logs. (LP: #956407)
  * debian/control:
    - Require the new ubuntuone-storage-protocol for #692597.
  * debian/patches:
    - Remove patches which have been included in upstream.
  * debian/watch:
    - Update to use the stable branch.
 -- Rodney Dawes <email address hidden> Wed, 18 Apr 2012 16:37:15 -0400