On Tue, Mar 19, 2013 at 01:32:41PM +0000, Vladislav Bogdanov wrote: > Allow clvm locks to be converted shared <-> exclusive with corosync/dlm. > > Without this it is impossible to alow both > * VM migration (shared lock is required) > * host-side snapshots of VM disks (exlusive lock is required) > > Locks are only converted if --force parameter passed to lvchange. > > Internally LKF_CONVERT flag is passed to dlm, so that is a real lock > conversion. > > Also deny release of an exclusive lock on a remote note without --force > flag to lvchange -an. I'm trying to figure out why the code doesn't already use CONVERT when possible; I would have expected it to. (It has to be combined with NOQUEUE to avoid deadlocks.) What happens now without this force/CONVERT patch? a new lock created/requested? _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
