This commit adds locks on reclaimspace operations to
prevent multiple process executing rbd sparsify/fstrim
on same volume.
Signed-off-by: Praveen M <m.praveen@ibm.com>
The CSI Controller (provisioner) can call `rbd sparsify` to reduce the
space consumption of the volume.
Signed-off-by: Niels de Vos <ndevos@redhat.com>