[Bug 1313397] Re: crash / exception in apt_btrfs_snapshot

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1313397

Title:
  crash / exception in apt_btrfs_snapshot

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  It looks like mp in create_btrfs_root_snapshot in
  apt_btrfs_snapshot.py is None.

  Some Background information:

  Some time ago, my hard drive broke, but I was able to recover all data
  by copying it from the old file system. It looks like I've made a
  mistake in the UUID of the file system: the UUID in /etc/fstab was not
  equal to the UUID reported by gparted.

  In the meantime, I've changed the UUID in /etc/fstab to the one
  reported by gparted and my dist upgrade seems to run fine at the
  moment. Let's hope, I'm able to boot after the upgrade ....

  --------------------------

  Here is the terminal output:

  roughly translated as:
  mount: Device .... does not exists.

  Critical error occurred

  Please create a bug report and add main.log and apt.log as attachment.
  ....

  Taceback ... (in english)


  
  --------------------------------
  Systemaktualisierung wird durchgeführt
  mount: Gerätedatei UUID=12561a0e-7e10-4912-97f0-0ac75dfb3405 existiert nicht

  
  Ein schwerwiegender Fehler ist aufgetreten 

  Bitte erstellen Sie einen Fehlerbericht und fügen Sie die Dateien 
  /var/log/dist-upgrade/main.log und /var/log/dist-upgrade/apt.log 
  hinzu. Die Systemaktualisierung wurde abgebrochen. 
  Ihre ursprüngliche sources.list wurde in 
  /etc/apt/sources.list.distUpgrade gesichert. 

  Traceback (most recent call last):

  File "/tmp/ubuntu-release-upgrader-ooj9qh/trusty", line 10, in 
  <module> 
  sys.exit(main()) 

  File 
  "/tmp/ubuntu-release-upgrader-ooj9qh/DistUpgrade/DistUpgradeMain.py", 
  line 243, in main 
  if app.run(): 

  File 
  "/tmp/ubuntu-release-upgrader-ooj9qh/DistUpgrade/DistUpgradeController.py", 
  line 1827, in run 
  return self.fullUpgrade() 

  File 
  "/tmp/ubuntu-release-upgrader-ooj9qh/DistUpgrade/DistUpgradeController.py", 
  line 1792, in fullUpgrade 
  if not self.doDistUpgrade(): 

  File 
  "/tmp/ubuntu-release-upgrader-ooj9qh/DistUpgrade/DistUpgradeController.py", 
  line 1133, in doDistUpgrade 
  self._maybe_create_apt_btrfs_snapshot() 

  File 
  "/tmp/ubuntu-release-upgrader-ooj9qh/DistUpgrade/DistUpgradeController.py", 
  line 1115, in _maybe_create_apt_btrfs_snapshot 
  res = apt_btrfs.create_btrfs_root_snapshot(prefix) 

  File "/tmp/ubuntu-release-upgrader-ooj9qh/apt_btrfs_snapshot.py", 
  line 167, in create_btrfs_root_snapshot 
  os.path.join(mp, "@"), 

  File "/usr/lib/python2.7/posixpath.py", line 77, in join 
  elif path == '' or path.endswith('/'): 

  AttributeError: 'NoneType' object has no attribute 'endswith'

  ---------------------------

  $ lsb_release -rd
  Description:    Ubuntu 13.10
  Release:        13.10

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