Apologies Strahill, I don’t think my question was very clear - my fault. In all the documentation on HCI that I’ve read, it clearly states the the 3 node HCI model can only be expanded in multiples of 3 nodes, i.e. 3, 6, 9, 12. I don’t know if I missed a basic explanation somewhere but is there any reason I can’t have a 5 node cluster with multiple Gluster Replica 3 volumes utilising any of the 5 nodes in the same Gluster Peer Group? Kind Regards Shimme

On 1 Nov 2020, at 17:17, Strahil Nikolov <hunter86_bg@yahoo.com> wrote:

We do not know. Nodes 3,4,5 need to be in the same gluster network like 1,2,3 . Once you create your bricks (inode size >= 512) and mount them permanently, you can create an extra volume or expand the current volumes.

Once you have prepared the nodes, you can add them from UI.

Best Regards, Strahil Nikolov

В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, simon@justconnect.ie <simon@justconnect.ie> написа:

I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and have added 2 additional Compute nodes to this Cluster.

What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a glusterfs Replica 3 Volume using nodes 3, 4 & 5?

Shimme _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/4QTQLBV4MYDQ3A...

Many thanks Strahil 😀

On 3 Nov 2020, at 16:52, Strahil Nikolov <hunter86_bg@yahoo.com> wrote:

Usually it is best practice to have the cluster expanded by a multiple of '3' because the gluster volume is of type 'replica 3' or 'replica 3 arbiter 1'. Such volumes can only be expanded by 3 bricks and the best practice is to have one node per brick.

Yet, the linux world gives freedom , so you can use 5 nodes like this: nodeA - data, volume1 nodeB - data ,volume1 nodeC - arbiter, volume1 ; arbiter , volume2 nodeD - data, volume2 nodeE - data, volume2

Best Regards, Strahil Nikolov

В неделя, 1 ноември 2020 г., 23:12:21 Гринуич+2, Simon Scott <simon@justconnect.ie> написа:

Apologies Strahill,

I don’t think my question was very clear - my fault.

In all the documentation on HCI that I’ve read, it clearly states the the 3 node HCI model can only be expanded in multiples of 3 nodes, i.e. 3, 6, 9, 12.

I don’t know if I missed a basic explanation somewhere but is there any reason I can’t have a 5 node cluster with multiple Gluster Replica 3 volumes utilising any of the 5 nodes in the same Gluster Peer Group?

Kind Regards

Shimme

...

On 1 Nov 2020, at 17:17, Strahil Nikolov <hunter86_bg@yahoo.com> wrote:

We do not know. Nodes 3,4,5 need to be in the same gluster network like 1,2,3 . Once you create your bricks (inode size >= 512) and mount them permanently, you can create an extra volume or expand the current volumes.

Once you have prepared the nodes, you can add them from UI.

Best Regards, Strahil Nikolov

В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, simon@justconnect.ie <simon@justconnect.ie> написа:

I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and have added 2 additional Compute nodes to this Cluster.

What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a glusterfs Replica 3 Volume using nodes 3, 4 & 5?

Shimme _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/4QTQLBV4MYDQ3A...