Filesystem notifications are not available on volumes, the reason why we started reading directly from brick.
Is it okay to read directly from a brick, but write to a volume so that replication happens?
The volume is created using 3 bricks using a replication strategy. Could anyone please suggest the demerits of directly reading from brick.
If the file on the brick from which you read is not in sync with the other copy/copies of the replica (i.e. there is a self-heal that is pending), you can get stale data. Reading from the mount ensures that you always get the up to date data.
Though not comparable with inotify, you can use glusterfind to provide some level of filesystem notifications.