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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1445252

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1445252

Title:
  [vivid] btrfs deadlock at mount/boot

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  My btrfs filesystem will not mount almost every boot for a few weeks
  now.  The only way I can currently fix this is to network boot into
  rescue mode to clear the log, would be great to import this into
  vivid.

  It appears to be this issue:
  https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c4f61f01d269815bb7c37be3ede59c5587747c6
  https://btrfs.wiki.kernel.org/index.php/Gotchas

  > Stable kernel version 3.19.1+ can cause a deadlock at mount time
  > workaround: boot with older kernel, or run btrfs-zero-log to clear the log (beware of the consequences)
  > fix: scheduled for 3.19.5, or apply 9c4f61f01d269815bb7c37.
  > also affected: 3.14.35+, 3.18.9+

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