I have created a 2 brick replicated volume.
gluster> volume status
Status of volume: storage
Gluster process TCP Port RDMA Port Online Pid
------------------------------------------------------------------------------
Brick master:/glusterfs/bricks/storage/mountpoint 49153 0 Y 5301
Brick worker1:/glusterfs/bricks/storage/mountpoint 49153 0 Y 3002
The volume is mounted like this:
On worker1 node /etc/fstab
worker1:/storage /data/storage/ glusterfs defaults,_netdev 0 0
On master node /etc/fstab
master:/storage /data/storage/ glusterfs defaults,_netdev 0 0
When I add read load(many small files) on the volume mounted on the master node CPU usage looks like this:
On master node: glusterfs ~ 50%
On master node: glusterfsd ~ 25%
On worker1 node: glusterfsd ~ 50%
There is no other load on the servers than the read load I start.
When I inspect the glusterfsd process on worker1 using strace, it seems like it does at least some of the file reading from this node.
Is this expected behavior? I would think that since it is a replicated volume and read load, it would serve all the requests from the brick on the localhost and not use the network to serve the requests.
Can anyone help to clarify my understanding of the architecture?
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