From: Valerie Aurora <vaurora@redhat.com>
To: Nick Dokos <nicholas.dokos@hp.com>
Cc: linux-ext4@vger.kernel.org
Subject: Re: ll_ver_fs data verification failure - 96TB fs
Date: Thu, 6 Aug 2009 16:36:26 -0400 [thread overview]
Message-ID: <20090806203626.GF1800@shell> (raw)
In-Reply-To: <28623.1249307676@gamaville.dokosmarshall.org>
On Mon, Aug 03, 2009 at 09:54:36AM -0400, Nick Dokos wrote:
> Just a heads-up for now. I ran ll_ver_fs on a 96TB fs - the write phase
> finished without problems, but the read phase encountered a problem:
>
> ...
> read File name: /mnt/dir00373/file026
>
> liverfs: verify /mnt/dir00373/file026 failed offset/timestamp/inode 3244298240/1248819541/1096796: found 3243249664/1248819541/1096796 instead
>
> liverfs: Data verification failed
> 770.45user 218639.65system 67:38:18elapsed 90%CPU (0avgtext+0avgdata 0maxresident)k
> 100357573552inputs+195522668184outputs (1major+414minor)pagefaults 0swaps
> make: *** [llver] Error 2
>
>
> The offset difference is exactly 1M, and it occurs about 3GB into the file.
Just a note, this is an off-by-one rather than a bit flip:
obase=2
3244298240
11000001011000000001000000000000
3243249664
11000001010100000001000000000000
-VAL
prev parent reply other threads:[~2009-08-06 20:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-03 13:54 ll_ver_fs data verification failure - 96TB fs Nick Dokos
2009-08-03 14:22 ` Nick Dokos
2009-08-06 20:04 ` Valerie Aurora
2009-08-06 20:37 ` Nick Dokos
2009-08-06 20:50 ` Andreas Dilger
2009-08-06 21:28 ` Nick Dokos
2009-08-06 21:43 ` Nick Dokos
2009-08-06 22:01 ` Nick Dokos
2009-08-06 22:54 ` Nick Dokos
2009-08-06 22:19 ` Andreas Dilger
2009-08-06 20:36 ` Valerie Aurora [this message]
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