Hi, I have 4 nodes, so a quorum would be 3 of 4. The Q is I suppose why does the documentation give this command as an example without qualifying it?
SO I am running the wrong command? I want a "raid10" On 27 April 2018 at 18:05, Karthik Subrahmanya <ksubr...@redhat.com> wrote: > Hi, > > With replica 2 volumes one can easily end up in split-brains if there are > frequent disconnects and high IOs going on. > If you use replica 3 or arbiter volumes, it will guard you by using the > quorum mechanism giving you both consistency and availability. > But in replica 2 volumes, quorum does not make sense since it needs both > the nodes up to guarantee consistency, which costs availability. > > If you can consider having a replica 3 or arbiter volumes it would be > great. Otherwise you can anyway go ahead and continue with the replica 2 > volume > by selecting *y* for the warning message. It will create the replica 2 > configuration as you wanted. > > HTH, > Karthik > > On Fri, Apr 27, 2018 at 10:56 AM, Thing <thing.th...@gmail.com> wrote: > >> Hi, >> >> I have 4 servers each with 1TB of storage set as /dev/sdb1, I would like >> to set these up in a raid 10 which will? give me 2TB useable. So Mirrored >> and concatenated? >> >> The command I am running is as per documents but I get a warning error, >> how do I get this to proceed please as the documents do not say. >> >> gluster volume create gv0 replica 2 glusterp1:/bricks/brick1/gv0 >> glusterp2:/bricks/brick1/gv0 glusterp3:/bricks/brick1/gv0 >> glusterp4:/bricks/brick1/gv0 >> Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to >> avoid this. See: http://docs.gluster.org/en/lat >> est/Administrator%20Guide/Split%20brain%20and%20ways%20to% >> 20deal%20with%20it/. >> Do you still want to continue? >> (y/n) n >> >> Usage: >> volume create <NEW-VOLNAME> [stripe <COUNT>] [replica <COUNT> [arbiter >> <COUNT>]] [disperse [<COUNT>]] [disperse-data <COUNT>] [redundancy <COUNT>] >> [transport <tcp|rdma|tcp,rdma>] <NEW-BRICK>?<vg_name>... [force] >> >> [root@glustep1 ~]# >> >> thanks >> >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users@gluster.org >> http://lists.gluster.org/mailman/listinfo/gluster-users >> > >
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