[PATCH 0/2] repair: fix AGFL rebuild problem
Barkley Vowk
bvowk at box.com
Wed Oct 29 13:23:06 CDT 2014
These patches fixed my issue.
Thanks.
On Tue, Oct 28, 2014 at 8:09 PM, Dave Chinner <david at fromorbit.com> wrote:
> Hi folks,
>
> The following two patches fix a repair rebuild issue that was
> reported to me. xfs_repair would appear to succeed, but subsequent
> runs would report a freespace mismatch and then on mount trigger
> a corruption error on the first allocation from AG 0.
>
> The problem as that the AGFL was not being correctly rebuilt due to
> a very particular freespace pattern in AG 0 which required free
> blocks in the AGFL to populate an empty AGFL. reapir silently
> ignored this error, so it triggered allocation corruption errors
> when the same AGFL fixup attempt failed on a mounted filesystem.
>
> The fix is relatively straight forward, as is the fixes to the
> tracing code that I had to make before i could track down the issue.
>
> -Dave.
>
>
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