Bug 732035 - kernel BUG at fs/btrfs/inode.c:4586 when recovering log after unclean reboot
Summary: kernel BUG at fs/btrfs/inode.c:4586 when recovering log after unclean reboot
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 16
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Josef Bacik
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2011-08-19 14:42 UTC by Mikko Tiihonen
Modified: 2011-08-28 05:38 UTC (History)
7 users (show)

Fixed In Version: kernel-3.1.0-0.rc3.git0.0.fc16
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-08-28 05:38:01 UTC
Type: ---

Attachments (Terms of Use)
kernel console output on crash (557.88 KB, image/png)
2011-08-19 14:42 UTC, Mikko Tiihonen
no flags Details

Description Mikko Tiihonen 2011-08-19 14:42:52 UTC
Created attachment 519053 [details]
kernel console output on crash

Description of problem:

Sometimes after a system crash (I'm running nouveau on barely supported hw) btrfs fails to recover its log.

Unfortunately btrfs is my root filesystem and this then makes F16 unusable.

Version-Release number of selected component (if applicable):

How reproducible:
Happens maybe 1/10th when there is unclean shutdown of filesystem.

Steps to Reproduce:
1. Crash system during disk activity.
2. Reboot
Actual results:
Fails to mount btrfs filesystem

Expected results:
Btrfs recovers its log and allows file system to be used.

Additional info:
To recover I have now twice booted to F15 live disk and mount the filesystem. The older kernel does not crash on the journal and after next boot I can boot back to F16.

Comment 1 Josef Bacik 2011-08-19 15:01:20 UTC
This is fixed in the most recent kernel.  I've submitted the patches to -stable so it should show up in a stable kernel at some point, but until then you can run the latest rawhide kernel and I think the patches are in there.

Comment 2 Chuck Ebbert 2011-08-23 16:10:41 UTC
Should be fixed in 3.1.0-rc3

Comment 3 Fedora Update System 2011-08-23 16:17:59 UTC
kernel-3.1.0-0.rc3.git0.0.fc16 has been submitted as an update for Fedora 16.

Comment 4 Fedora Update System 2011-08-28 05:37:13 UTC
kernel-3.1.0-0.rc3.git0.0.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Note You need to log in before you can comment on or make changes to this bug.