From: Jim Paris <jim@jtan.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Kernel panic, FS corruption Was: Re: Call for RAID-6 users
Date: Fri, 6 Aug 2004 00:04:39 -0400 [thread overview]
Message-ID: <20040806040439.GA21258@jim.sh> (raw)
In-Reply-To: <4112D2A1.9000001@zytor.com>
> If you can reproduce it with ext2/3 it would make debugging simpler,
> because I understand the ext code and data structures a lot better.
This demonstrates it on ext2. I can't seem to reproduce it with just
simple use of 'dd', but it shows up if I untar a ton of data.
This script:
- creates five 100MB "disks" through loopback
- puts them in a six-disk RAID-6 array (resulting size=400MB, degraded)
- untars about 350MB of data to the array
- runs e2fsck, which shows filesystem errors
Usage:
- put r6ext.sh and big.tar.bz2 in a directory
- run r6ext.sh as root
Sorry for the huge files, but e2fsck didn't show any problems when I
scaled everything down by a factor of 10. You could probably make
your own big.tar.bz2 and see the same problem, as there's nothing
special about this data.
http://stonewall.mit.edu/~jim/r6ext.sh
http://stonewall.mit.edu/~jim/big.tar.bz2 (77MB)
-jim
next prev parent reply other threads:[~2004-08-06 4:04 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-23 23:32 Call for RAID-6 users H. Peter Anvin
2004-07-26 21:38 ` Jim Paris
2004-07-27 2:05 ` Matthew - RAID
2004-07-27 2:12 ` Jim Paris
2004-07-27 16:40 ` Ricky Beam
2004-07-27 17:20 ` Jim Paris
2004-07-27 18:19 ` Jim Paris
2004-07-27 18:48 ` Jim Paris
2004-07-28 3:09 ` Jim Paris
2004-07-28 8:36 ` David Greaves
2004-07-28 10:02 ` Jim Paris
2004-07-30 15:58 ` H. Peter Anvin
2004-07-30 19:39 ` Jim Paris
2004-07-30 19:45 ` H. Peter Anvin
2004-07-30 21:11 ` maarten van den Berg
2004-07-30 21:38 ` maarten van den Berg
2004-07-31 0:28 ` maarten van den Berg
2004-08-01 13:03 ` Kernel panic, FS corruption Was: " maarten van den Berg
2004-08-01 18:05 ` Jim Paris
2004-08-01 22:10 ` maarten van den Berg
2004-08-05 23:54 ` H. Peter Anvin
2004-08-06 0:19 ` Jim Paris
2004-08-06 0:36 ` H. Peter Anvin
2004-08-06 4:04 ` Jim Paris [this message]
2004-08-05 23:51 ` H. Peter Anvin
2004-08-05 23:46 ` H. Peter Anvin
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