Date: Wed, 16 Jun 2004 13:57:54 +0100
From: Alasdair G Kergon <agk@redhat.com>
To: foo@porto.bmb.uga.edu
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: processes hung in D (raid5/dm/ext3)
Message-ID: <20040616125754.GF6627@agk.surrey.redhat.com>
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	Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
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On Tue, Jun 15, 2004 at 10:16:33PM -0400, foo@porto.bmb.uga.edu wrote:
> # pvdisplay /dev/md0
> # vgdisplay vg0
> # lvdisplay 

LVM2/device-mapper diagnostics
==============================

If you use the 'lvs' reporting tool, we'll get fuller information more 
concisely, so we can check for any anomalies. 
[Unlikely to be any based on what you've posted so far, but worth
eliminating the possibility.]

Run:
  vgs -v
  lvs -v
  pvs -v

Can you confirm that you're not running *any* LVM or device-mapper
commands during your backup sequence?

Confirm the versions by running:
  lvm version
  dmsetup targets

And dump the static device-mapper state, by running:
  dmsetup -v table
  dmsetup status

[I'll get that fixed to provide a column-based output too.]

And finally mount sysfs and run
  ls -ld .../block/dm-*

[This lot ought to get scripted.]

Alasdair
-- 
agk@redhat.com
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