[libvirt] [PATCH 0/2]: Make storage_backend device scanning more reliable

[Chris Lalancette <clalance redhat com>]

All,
     This is a 2 part patch series to make libvirt backend device scanning more
reliable.  In particular, this is important for things that can create/destroy
udev /dev nodes, since at present we can race with the udev creation.  Note that
this takes over the previous patch that I posted to retry /dev/disk/by-{id,path}
scanning.

Signed-off-by: Chris Lalancette <clalance redhat com>