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SubjectRe: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?)
On 10/23/12 3:57 PM, Nix wrote:
> [Bruce, Trond, I fear it may be hard for me to continue chasing this NFS
> lockd crash as long as ext4 on 3.6.3 is hosing my filesystems like
> this. Apologies.]

<big snip>

> The only unusual thing about the filesystems on this machine are that
> they have hardware RAID-5 (using the Areca driver), so I'm mounting with
> 'nobarrier': the full set of options for all my ext4 filesystems are:
>
> rw,nosuid,nodev,relatime,journal_checksum,journal_async_commit,nobarrier,quota,
> usrquota,grpquota,commit=30,stripe=16,data=ordered,usrquota,grpquota

Out of curiosity, when I test log replay with the journal_checksum option, I
almost always get something like:

[ 999.917805] JBD2: journal transaction 84121 on dm-1-8 is corrupt.
[ 999.923904] EXT4-fs (dm-1): error loading journal

after a simulated crash & log replay.

Do you see anything like that in your logs?

<big snip>

Thanks,
-Eric



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