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Date: Mon, 10 Aug 2009 00:36:57 +0100
From: Alasdair G Kergon <agk@redhat.com>
Subject: Re: [linux-lvm] can't remove snapshots
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To: LVM general discussion and development <linux-lvm@redhat.com>

On Mon, Aug 10, 2009 at 01:31:40AM +0200, Florian Pritz wrote:
> lsof/fuser don't show anything and it's not mounted. This happens if
> roughly 50% of the cases and after that the creation of snapshots

Then check your udev rules - wouldn't be the first time udev
tried to use a device lvm wanted to remove...

[Quick test is to stop udev processing events temporarily and see if the
problem disappears.]

Alasdair