Can't delete "open" snapshots

[Peter Rajnoha <prajnoha@redhat.com>]

On 08/08/2010 08:03 AM +0100, ben wrote:
> Someone recently noted here that they have been having trouble deleting 
> snapshots. I have been seeing the same behaviour with that latest CVS builds. 
> I can create a snap, run "lvs", then try to delete the snapshot. Sometimes it 
> will delete but more often lvremove complains the snap is "open" and refuses. 

I suppose this is the same as:
  https://bugzilla.redhat.com/show_bug.cgi?id=577798

Can you try killing udev daemon temporarily with "killall udevd" and see
if you can reproduce? What distribution do you use?

Basically, we have problem supporting the "watch" rule, so you can also
try and see if that one is used somewhere 

  grep watch /lib/udev/rules.d/* /etc/udev/rules.d/*

(..most of the time it's the "watch" rule set in udisks' udev rules)

Peter