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Re: 3.9.0: general protection fault

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: 3.9.0: general protection fault
From: Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx>
Date: Mon, 03 Jun 2013 18:39:59 +0200
Cc: linux-xfs@xxxxxxxxxxx
Delivered-to: linux-xfs@xxxxxxxxxxx
In-reply-to: <20130511001213.GA32675@dastard>
References: <kltu6o$33j$1@xxxxxxxxxxxxx> <km7oop$28c$1@xxxxxxxxxxxxx> <20130506122844.GL19978@dastard> <5187A663.707@xxxxxxxxxxxxxxxxxx> <20130507011254.GP19978@dastard> <5188E2F5.1090304@xxxxxxxxxxxxxxxxxx> <20130507220742.GC24635@dastard> <518A8FD4.40700@xxxxxxxxxxxxxxxxxx> <20130509004115.GM24635@dastard> <518CC9A9.9060500@xxxxxxxxxxxxxxxxxx> <20130511001213.GA32675@dastard>
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Just an update here, the issue only came up once again on another system and I didn't have time for a couple of days to even save the collectl log file. I then increased the max number of rotated log files, but it didn't happen again ever since. So I don't have any logs about the state of the system at crash time so far.
However, I just got a captured file corruption:

(squeeze)fslab3:~/fstests# cat /mnt/fhgfs//fslab4/ql-fstest/fstest13579.err
File corruption in /mnt/fhgfs//fslab4/ql-fstest/fstest.13635/d040/d030/7ae214d1 
(create time: Mon Jun  3 17:36:11 2013) around 246415360 [pattern = 7ae214d1]
After n-checks: 3
Expected: d1, got: 83 (pos = 247324600)
Expected: 14, got: ec (pos = 247324601)
Expected: e2, got: 30 (pos = 247324602)
Expected: 7a, got: 48 (pos = 247324603)
Expected: d1, got: 89 (pos = 247324604)
Expected: 14, got: 5d (pos = 247324605)
Expected: e2, got: e8 (pos = 247324606)
...
Expected: 14, got: 84 (pos = 247324661)
Expected: e2, got: b9 (pos = 247324662)
Expected: 7a, got: 0 (pos = 247324663)

Hmm, exactly 64 bytes of corrupted data, the file itself has a size of 512MiB.

I'm going to export single disks from the controller to use it with md-raid6 as this allows to do parity checks and to identify bad disks.


Cheers,
Bernd

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