This problem is being triggered every time I don't shutdown cleanly. Here's my disk layout:
/boot ext4 / btrfs One workaround seems to be: booting a CD or USB stick and repairing the root fs. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1445252 Title: [vivid] btrfs deadlock at mount/boot Status in linux package in Ubuntu: Triaged Status in linux source package in Utopic: Confirmed Status in linux source package in Vivid: Triaged Status in linux package in Debian: Fix Released 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+ break-fix: 381cf6587f8a8a8e981bc0c1aaaa8859b51dc756 9c4f61f01d269815bb7c37be3ede59c5587747c6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1445252/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp