Callback activated when we encounter an error with the watch session.
This can happen when the location of the objects moves within the
cluster and we fail to register our watch with the new object location,
or when our connection with the object OSD is otherwise interrupted and
we may have missed notify events.
@param pre opaque user-defined value provided to rados_watch2()
@param err error code
@typedef rados_watcherrcb_t
Callback activated when we encounter an error with the watch session. This can happen when the location of the objects moves within the cluster and we fail to register our watch with the new object location, or when our connection with the object OSD is otherwise interrupted and we may have missed notify events.
@param pre opaque user-defined value provided to rados_watch2() @param err error code