Hi, New to Gluster too. I welcome the more experienced users to correct me if I'm wrong. Based on some quick tests in my environment, it works like this: a) The following creates a replicated (replica count = 2), non-distributed volume gluster volume create replicated_but_not_distributed replica 2 host1:/GlusterFS/replicated_but_not_distributed host2:/GlusterFS/replicated_but_not_distributed [user@whatever]# gluster volume info replicated_but_not_distributed Volume Name: replicated_but_not_distributed Type: Replicate Volume ID: blah-bal-blah-blah-blah Status: Started Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: host1:/GlusterFS/replicated_but_not_distributed Brick2: host2:/GlusterFS/replicated_but_not_distributed Options Reconfigured: nfs.disable: on performance.readdir-ahead: on transport.address-family: inet b) The following creates a distributed, non-replicated volume. Note that I omitted the "replica" directive: gluster volume create distributed_but_not_replicated host1:/GlusterFS/distributed_but_not_replicated host2:/GlusterFS/distributed_but_not_replicated [user@whatever]# gluster volume info distributed_but_not_replicated Volume Name: distributed_but_not_replicated Type: Distribute Volume ID: blah-bal-blah-blah-blah Status: Started Snapshot Count: 0 Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: host1:/GlusterFS/distributed_but_not_replicated Brick2: host2:/GlusterFS/distributed_but_not_replicated Options Reconfigured: transport.address-family: inet performance.readdir-ahead: on nfs.disable: on c) The following creates a replicated AND distributed volume as shown here (https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.1/html/Administration_Guide/sect-User_Guide-Setting_Volumes-Distributed_Replicated.html): gluster volume create replicated_and_distributed replica 2 host1:/GlusterFS/replicated_and_distributed host2:/GlusterFS/replicated_and_distributed host3:/GlusterFS/replicated_and_distributed host4:/GlusterFS/replicated_and_distributed I don't have 2 other nodes online at this moment to paste the output of "gluster volume info" for this one. I hope this helps. On 2/8/2017 4:12 AM, Dave Fan wrote: > Hi, > > I'm new to Gluster so a very basic question. Are all volumes distributed > by default? Is there a switch to turn this feature on/off? > > I ask this because in an intro to Gluster I saw "Replicated Volume" and > "Distributed Replicated Volume". Is the first type, "Replicated Volume", > not distributed? > > Many thanks, > Dave > > > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://lists.gluster.org/mailman/listinfo/gluster-users >
Attachment:
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users
