Date: Mon, 27 Oct 2003 18:38:04 -0600 (CST)
Message-Id: <200310280038.h9S0c4MF188327@zhadum.americas.sgi.com>
From: Glen Overby <overby@sgi.com>
To: linux-xfs@oss.sgi.com
Subject: Re: Broken Log Help Needed
In-Reply-To: message from Austin Gonyou sent 27 October 2003
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On October 27, Austin Gonyou wrote:
> The issue is that I don't see any "ERROR" statements in this output, but
> trying to replay the log or mounting -oro will oops the kernel and that
> one device is then unavailable and the system must be rebooted. 

Can you send the exact oops message.. where it occured, etc?

> I would like to extract the log so I can put this server back into our
> beta environment. If someone could aid me in this I'd much appreciate
> it.

Here's an example:

[root@HOSTNAME root]# /a23/overby/bin.l/mkfs.xfs -f -b size=4096 -l size=8192b /dev/hda6

meta-data=/dev/hda6              isize=256    agcount=8, agsize=140317 blks
         =                       sectsz=512
data     =                       bsize=4096   blocks=1122534, imaxpct=25
         =                       sunit=0      swidth=0 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal log           bsize=4096   blocks=8192, version=1
         =                       sectsz=512   sunit=0 blks
realtime =none                   extsz=65536  blocks=0, rtextents=0

[root@HOSTNAME root]# /a23/overby/bin.l/xfs_db /dev/hda6
xfs_db> sb 0
xfs_db> print logstart
logstart = 1048580
xfs_db> print logblocks
logblocks = 8192
xfs_db> convert fsb 1048580 daddr
0x4483c0 (4490176)
xfs_db> convert fsb 8192 daddr
0x10000 (65536)

[root@HOSTNAME root]# dd if=/dev/hda6 of=/tmp/hda6log bs=512
 skip=4490176 count=65536
65536+0 records in
65536+0 records out

Glen Overby