[Bug 800908] Re: update to oneiric quit due to missing btrfs

[Brian Murray]

** This bug is no longer a duplicate of bug 801696
   update-manager -d crashed when updating from 11.04 to 11.10 - line 69, in apt_btrfs_snapshot.py", line 69, in btrfs_subvolume_snapshot  source, dest]) - OSError: [Errno 2] No such file or directory

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https://bugs.launchpad.net/bugs/800908

Title:
  update to oneiric quit due to missing btrfs

Status in “apt-btrfs-snapshot” package in Ubuntu:
  Fix Released
Status in “update-manager” package in Ubuntu:
  Fix Committed

Bug description:
  Traceback (most recent call last):

    File "/tmp/update-manager-3uvvzV/oneiric", line 7, in <module>
      sys.exit(main())

    File "/tmp/update-manager-3uvvzV/DistUpgradeMain.py", line 202, in main
      if app.run():

    File "/tmp/update-manager-3uvvzV/DistUpgradeController.py", line 1642, in run
      return self.fullUpgrade()

    File "/tmp/update-manager-3uvvzV/DistUpgradeController.py", line 1612, in fullUpgrade
      if not self.doDistUpgrade():

    File "/tmp/update-manager-3uvvzV/DistUpgradeController.py", line 1006, in doDistUpgrade
      self._maybe_create_apt_btrfs_snapshot()

    File "/tmp/update-manager-3uvvzV/DistUpgradeController.py", line 990, in _maybe_create_apt_btrfs_snapshot
      res = apt_btrfs.create_btrfs_root_snapshot(prefix)

    File "/tmp/update-manager-3uvvzV/apt_btrfs_snapshot.py", line 122, in create_btrfs_root_snapshot
      os.path.join(mp, self.SNAP_PREFIX+additional_prefix+snap_id))

    File "/tmp/update-manager-3uvvzV/apt_btrfs_snapshot.py", line 69, in btrfs_subvolume_snapshot
      source, dest])

    File "/usr/lib/python2.7/subprocess.py", line 486, in call
      return Popen(*popenargs, **kwargs).wait()

    File "/usr/lib/python2.7/subprocess.py", line 672, in __init__
      errread, errwrite)

    File "/usr/lib/python2.7/subprocess.py", line 1213, in _execute_child
      raise child_exception

  OSError: [Errno 2] File or directory does not exist

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