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Date:      Mon, 25 Apr 2011 14:45:00 -0700
From:      Doug Barton <dougb@FreeBSD.org>
To:        John Baldwin <jhb@freebsd.org>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: panic: ext2fs_alloccg: map corrupted
Message-ID:  <4DB5EB5C.6040906@FreeBSD.org>
In-Reply-To: <201104251734.30284.jhb@freebsd.org>
References:  <4DB5CF3C.9030002@FreeBSD.org> <201104251734.30284.jhb@freebsd.org>

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On 04/25/2011 14:34, John Baldwin wrote:
> On Monday, April 25, 2011 3:45:00 pm Doug Barton wrote:
>> I got the following panic on 9-current, r216869, amd64 SMP on a core 2
>> duo system. I'm running the older version (from 2011-01-01) to try and
>> determine where the problem I'm having with stability on -current first
>> occurred. If this problem was fixed between now and then, no worries.
>>
>> This panic happened during heavy disk activity on the ext2fs partition.
>> The file core.txt.0.216869 is in my home directory on freefall if anyone
>> wants to take a look.
>
> This looks like the panic that you reported earlier (and tested the fix for
> IIRC).  The fix was comitted in 218438:

Yeah, I thought it looked familiar. :-/  Sorry for not digging into it 
deeper myself before reporting, and thanks for looking into it. I'm 
having massive problems with -current atm, and I'm trying to do a binary 
search to find out when they started in the middle of also trying to get 
$REALWORK done.

Since I was just able to trigger the problem I'm seeing without heavy 
access on my ext2fs partition, I'm thinking that what I might do is back 
all of my sources up to the point in the binary search that I'm testing 
but then 'cd /sys/fs/ext2fs && svn up', does that sound safe?


Doug

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