[ovirt-users] Re: Expand existing gluster storage in ovirt 4.2/4.3
On Thu, Feb 21, 2019 at 8:47 PM <adrianquintero(a)gmail.com> wrote:
Hello,
I have a 3 node ovirt 4.3 cluster that I've setup and using gluster (Hyperconverged
setup)
I need to increase the amount of storage and compute so I added a 4th host
(server4.example.com) if it is possible to expand the amount of bricks (storage) in the
"data" volume?
I did some research and from that research the following caught my eye: old post
"https://medium.com/@tumballi/scale-your-gluster-cluster-1-node-at-a-time-62dd6614194e"
So the question is, if taking that approach feasible? , is it even possible an oVirt
point of view?
Expanding by 1 node is only possible if you have sufficient space on
the existing nodes in order to create a replica 2 + arbiter volume.
The post talks of how you can create your volumes in a way that you
can move the bricks around so that the each of the bricks in a replica
set reside on a separate server. We do not have an automatic way to
provision and rebalance the bricks yet in order to expand by 1 node.
>
>
> ---------------------------
> My gluster volume:
> ---------------------------
> Volume Name: data
> Type: Replicate
> Volume ID: 003ffea0-b441-43cb-a38f-ccdf6ffb77f8
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: server1.example1.com:/gluster_bricks/data/data
> Brick2: server2.example.com:/gluster_bricks/data/data
> Brick3: server3.example.com:/gluster_bricks/data/data (arbiter)
> Options Reconfigured:
> cluster.granular-entry-heal: enable
> performance.strict-o-direct: on
> network.ping-timeout: 30
> storage.owner-gid: 36
> storage.owner-uid: 36
> cluster.choose-local: off
> user.cifs: off
> features.shard: on
> cluster.shd-wait-qlength: 10000
> cluster.shd-max-threads: 8
> cluster.locking-scheme: granular
> cluster.data-self-heal-algorithm: full
> cluster.server-quorum-type: server
> cluster.quorum-type: auto
> cluster.eager-lock: enable
> network.remote-dio: enable
> performance.low-prio-threads: 32
> performance.io-cache: off
> performance.read-ahead: off
> performance.quick-read: off
> transport.address-family: inet
> nfs.disable: on
> performance.client-io-threads: off
>
>
> Thanks.
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