I mistyped the storage allocation for an additional virtio drive for one of our vm guests and now I cannot get rid of the thing.

I have discovered that this is probably, indeed almost certainly, related to udev but the few work arounds I have found all seem to fail for me.

Does anyone here know how to remove these things?

When I try this:

# for i in {1..200}; do udevadm control --stop-exec-queue ; lvremove -f /dev/vg_vhost01/lv_vm_inet05.harte-lyne.ca_01; udevadm control --start-exec-queue; done

I get hundreds of these:

Logical volume vg_vhost01/lv_vm_inet05.harte-lyne.ca_01 is used by another device.

# lsof /dev/vg_vhost01/lv_vm_inet05.harte-lyne.ca_01 #

I recall that I ran into this before and I have a sinking feeling that the 'fix' was to reinstall the then new virtual host OS. I have (re-)opened a bug report:

https://bugzilla.redhat.com/show_bug.cgi?id=855409

But if anyone has a recipe to deal with this I would be grateful if you would share it.