[Gluster-users] Automation of single server addition to replica

[Gandalf Corvotempesta]

Il 09 nov 2016 1:23 AM, "Joe Julian" <joe at julianfamily.org> ha scritto:
>
> Replicas are defined in the order bricks are listed in the volume create
command. So gluster volume create myvol replica 2 server1:/data/brick1
server2:/data/brick1 server3:/data/brick1 server4:/data/brick1 will
replicate between server1 and server2 and replicate between server3 and
server4.
>
> See also
https://joejulian.name/blog/how-to-expand-glusterfs-replicated-clusters-by-one-server/
>

i really hope this could be automated in newer gluster versions
There is almost no sense to make a replica on the same server so gluster
should automatically move bricks to preserve data consistency when adding
servers.

Ceph does this by moving objects around and you don't have to add servers
in a multiple of replica

the rebalance command could be used to rebalance newly added bricks by
preserving replicas in a proper state
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