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Re: 3.9.0: XFS rootfs corruption

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: 3.9.0: XFS rootfs corruption
From: CAI Qian <caiqian@xxxxxxxxxx>
Date: Tue, 4 Jun 2013 00:48:18 -0400 (EDT)
Cc: Eric Sandeen <sandeen@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20130604043610.GH29466@dastard>
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Thread-index: fdLJ/70YqItdNfHQlI/02M74ZCDA6g==
Thread-topic: 3.9.0: XFS rootfs corruption

----- Original Message -----
> From: "Dave Chinner" <david@xxxxxxxxxxxxx>
> To: "CAI Qian" <caiqian@xxxxxxxxxx>
> Cc: "Eric Sandeen" <sandeen@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
> Sent: Tuesday, June 4, 2013 12:36:10 PM
> Subject: Re: 3.9.0: XFS rootfs corruption
> 
> On Mon, Jun 03, 2013 at 04:09:06AM -0400, CAI Qian wrote:
> [snip]
> 
> > :/# xfs_repair -L  /dev/mapper/rhel_ibm--p720--01--lp4-root
> > Phase 1 - find and verify superblock...
> > Phase 2 - using internal log
> ....
> 
> Now that you've repaired the filesystem, can you reproduce the
> problem?
> 
> It looks somewhat like the same bug we fixed in 3.8-rc4 that Dave
> Jones hit (37f1356 xfs: recalculate leaf entry pointer after
> compacting a dir2 block), but if you've never repaired the damage on
> disk that this problem caused then you'll just keep tripping over
> it.
> 
> So, can you reproduce the problem now on this machine/filesystem?
After repaired, the system can be booted up successfully. If I want
to corrupt it again, I suppose I'll need to re-run the workload, i.e.,
1) trinity
2) xfstests
3) kdump reboot.
CAI Qian
> 
> Cheers,
> 
> Dave.
> --
> Dave Chinner
> david@xxxxxxxxxxxxx
> 

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