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Re: xfs_force_shutdown with linux-2.4.6-xfs-07052001?

To: KELEMEN Peter <Peter.Kelemen@xxxxxxx>
Subject: Re: xfs_force_shutdown with linux-2.4.6-xfs-07052001?
From: Seth Mos <knuffie@xxxxxxxxx>
Date: Fri, 3 Aug 2001 00:02:27 +0200 (CEST)
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <20010802235119.B2291@xxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Thu, 2 Aug 2001, KELEMEN Peter wrote:

> * Seth Mos (knuffie@xxxxxxxxx) [20010801 09:46]:
> 
> > That is probably caused by an IO error. I see you are using lvm
> > which could be related.  If an IO error occurs the filesystem
> > will shutdown to prevent more damage.
> 
> Well.  I checked the hard drive (read-only) in another machine, it
> reports no errors.  S.M.A.R.T. is happy, no relocated sectors or
> raw read, seek or CRC errors.  Nothing.

That counters the hardware site.

> > This error could be on the device (bad cluster on the disk) or
> > something in a software layer like md or lvm going wrong which
> > is seen by XFS as a hardware error.  What is actually the lvm
> > device. Do you use md or any other software that might
> > interfere?  IDE or scsi and what controller and system. How is
> > the lvm device constructed.
> 
> EIDE, no UDMA.  No MD at all, LVM is pretty straightforward, a
> lonely 20G disk sliced into two, sitting in an extended partition.
> A big partition is actually the only PV, carrying a VG with six
> LVs.  No magic, this is supposed to be a workstation.  Kernel is
> tracked CVS, compiled with egcs-1.1.2.  No overclock.

That indeed seems very simple. The problem is that it is hard to debug
since it will probably be extrmely hard to replicate. If you can find a
way to reproduce this, let us know please. We'd love to squash XFS related
bugs ;-)

I have absolutely zipp experience with LVM so I can't comment on any
problems on that front.

> The thing hasn't happened since (knock on wood).

Good luck then, you will need it for the next knock on wood.

Cheers



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