[libvirt] sanlock on F17

[Dave Allan]

I just tried to set up sanlock on F17 using the instructions at
http://libvirt.org/locking.html, but libvirtd refuses to start with
the sanlock error in the logs:

Jun 29 19:56:20 nienna sanlock[8423]: 19846 open error -13
/var/lib/libvirt/sanlock/__LIBVIRT__DISKS__

I confirmed that user sanlock can create, read and write files in
/var/lib/libvirt/sanlock

The only thing I can think of that's slightly odd about my setup is
that I'm only concerned with the local machine, so that directory is
not an NFS mount.  Anybody have any thoughts on what's going wrong
here?

TIA,
Dave