Re: [ovirt-users] Recommended gluster setup
Hi ,
yes, you are right. Since arbiter brick has only metadata and data for
the vm has to be served from one of the other two replicas, read is slow.
Arbiter is a special subset of replica 3 volumes and is aimed at
preventing split-brains and providing same consistency as a normal replica
3 volume with out consuming 3x space. You could use replica 3 and no issues
with that.
Thanks
kasturi
On Fri, Sep 15, 2017 at 12:41 PM, Abi Askushi <rightkicktech(a)gmail.com>
wrote:
Hi all,
I see in the ovirt guides that a gluster volume replica 3 with 1 arbiter
is recommended.
Why not simple replica 3? Is it due to the higher replication data that
would cause performance issues?
What I am observing is that a VM running on the server which has the
arbiter brick has slower read performance then when the same VM runs on
another server with a normal brick. Has anyone observed this? Is it because
the arbiter does not have the real data on it?
Thanx,
Alex
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