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3 Commits

Author SHA1 Message Date
John Mulligan 97732ac885 rbd: add a UpdateWatch test case with multiple watches and go channels 
Signed-off-by: John Mulligan <jmulligan@redhat.com>
 2020-07-23 13:19:57 -04:00
John Mulligan f3f2180e66 rbd: add Watch type and watch callbacks support 
Add UpdateWatch function implementing rbd_update_watch.
Add Unwatch function implementing rbd_update_unwatch.
Add a higher level Watch type to encapsulate watching
the image and the watch handle.
Add basic tests to validate the callback behavior.

Signed-off-by: John Mulligan <jmulligan@redhat.com>
 2020-07-23 13:19:57 -04:00
Niels de Vos d0943906f7 rbd: add minimal support for listing watchers on an RBD image 
Checking if there are other clients interested in changes to an RBD
image is important for certain actions. For example, the Ceph-CSI
project would not want to remove an image in case it is still mounted
somewhere.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
 2020-02-26 13:04:25 -05:00