created a distribute volume and started it. glustershd was not running. Then created a replicate volume and started. Found that glustershd was started.

Now I stopped the replicate volume. When I checked the gluster processes running, found that glustershd was still running inspite of no replicate volume running.


ps aux | grep gluster
root      5319  0.1  2.7 226356 107308 ?       Ssl  15:36   0:00 glusterd
root      5512  0.0  1.9 276448 76312 ?        Ssl  15:38   0:00 /usr/local/sbin/glusterfsd -s localhost --volfile-id vol.hyperspace.mnt-sda7-export1 -p /etc/glusterd/vols/vol/run/hyperspace-mnt-sda7-export1.pid -S /tmp/a1d6bbc397f2dbe2b2bea5d7556c1723.socket --brick-name /mnt/sda7/export1 -l /usr/local/var/log/glusterfs/bricks/mnt-sda7-export1.log --brick-port 24011 --xlator-option vol-server.listen-port=24011
root      5517  0.0  1.9 276448 76268 ?        Ssl  15:38   0:00 /usr/local/sbin/glusterfsd -s localhost --volfile-id vol.hyperspace.mnt-sda8-export1 -p /etc/glusterd/vols/vol/run/hyperspace-mnt-sda8-export1.pid -S /tmp/8768514db5b27f126ff2cebf4b3a4fb7.socket --brick-name /mnt/sda8/export1 -l /usr/local/var/log/glusterfs/bricks/mnt-sda8-export1.log --brick-port 24012 --xlator-option vol-server.listen-port=24012
root      5594  0.5  2.5 225980 100236 ?       Ssl  15:41   0:00 /usr/local/sbin/glusterfs -f /etc/glusterd/nfs/nfs-server.vol -p /etc/glusterd/nfs/run/nfs.pid -l /usr/local/var/log/glusterfs/nfs.log
root      5600  0.3  1.9 182752 75572 ?        Ssl  15:41   0:00 /usr/local/sbin/glusterfs -s localhost --volfile-id gluster/glustershd -p /etc/glusterd/glustershd/run/glustershd.pid -l /usr/local/var/log/glusterfs/glustershd.log -S /tmp/c1e275cc4fd258634235306bd2c1eeed.socket
root      5610  0.0  0.0  13124  1068 pts/8    S+   15:41   0:00 grep --color=auto gluster
raghu    11568  0.0  0.0  45084  2864 pts/7    S+   10:36   0:00 ssh shell.gluster.com -l raghavendrabhat
root@hyperspace:~# gluster volume info
 
Volume Name: vol
Type: Distribute
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: hyperspace:/mnt/sda7/export1
Brick2: hyperspace:/mnt/sda8/export1
 
Volume Name: mirror
Type: Replicate
Status: Stopped
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: hyperspace:/mnt/sda7/export3
Brick2: hyperspace:/mnt/sda8/export3


And when checked the glustershd volfile it had the distribute volumes graph in its volfile.

volume vol-client-0
    type protocol/client
    option remote-host hyperspace
    option remote-subvolume /mnt/sda7/export1
    option transport-type tcp
end-volume

volume vol-client-1
    type protocol/client
    option remote-host hyperspace
    option remote-subvolume /mnt/sda8/export1
    option transport-type tcp
end-volume

volume vol-replicate-0
    type cluster/replicate
    option background-self-heal-count 0
    option data-self-heal on
    option self-heal-daemon on
    subvolumes vol-client-0
end-volume

volume vol-replicate-1
    type cluster/replicate
    option background-self-heal-count 0
    option data-self-heal on
    option self-heal-daemon on
    subvolumes vol-client-1
end-volume

volume glustershd
    type debug/io-stats
    subvolumes vol-replicate-0 vol-replicate-1
end-volume