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Re: XFS kernel crash and corrupted FS

To: Luis Montes <luis.montes@xxxxxxxxx>
Subject: Re: XFS kernel crash and corrupted FS
From: Eric Sandeen <sandeen@xxxxxxx>
Date: Mon, 21 Jan 2002 12:37:05 -0600 (CST)
Cc: <linux-xfs@xxxxxxxxxxx>
In-reply-to: <200201211818.KAA28743@qdusa.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Mon, 21 Jan 2002, Luis Montes wrote:

> The problem:
> I was just finished installing DRI, and was running glxgears to test
> it. Then when I tried to list a directory in one of the xfs
> partitions it reported input/output error.  I rebooted and the root
> filesystem was corrupted beyond repair with the wnsuing kernel panic.

How was this determined?  Did you try xfs_repair on the filesystem?  What
was the output?  Can you send the output from xfs_repair, if it's
failing?

Also, are there any messages in your logs concerning a forced shutdown of
the filesystem?

> Three are
> damaged beyond repair (one actually seems to appear as an ext3!
> filesystem)

This probably means that the xfs superblock is damaged, and mount is
finding an old ext3 signature from a previous mkfs.

> But trying to mount one of the damaged fs's actually produces a
> couple of  "unable to handle kernel paging request" errors and the
> system just freezes. It seems repeatable, three times I tried
> mounting that filesystem and thre three times I got thar fault. Is
> this something you guys might want to look more closely? It's been a
> long long while since I had any kernel problems, and I just read in
> the FAQ that I might first run ksymoops.

Yes, the ksymoops output might shed more light on this.

-Eric


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