[ovirt-users] Re: Single instance scaleup.

Hi Stahil, Thank you so much for yout input !  gluster volume info Volume Name: engine Type: Distribute Volume ID: d7449fc2-cc35-4f80-a776-68e4a3dbd7e1 Status: Started Snapshot Count: 0 Number of Bricks: 1 Transport-type: tcp Bricks: Brick1: 192.168.80.191:/gluster_bricks/engine/engine Options Reconfigured: nfs.disable: on transport.address-family: inet storage.owner-uid: 36 storage.owner-gid: 36 features.shard: on performance.low-prio-threads: 32 performance.strict-o-direct: off network.remote-dio: off network.ping-timeout: 30 user.cifs: off performance.quick-read: off performance.read-ahead: off performance.io-cache: off cluster.eager-lock: enable Volume Name: ssd-samsung Type: Distribute Volume ID: 76576cc6-220b-4651-952d-99846178a19e Status: Started Snapshot Count: 0 Number of Bricks: 1 Transport-type: tcp Bricks: Brick1: 192.168.80.191:/gluster_bricks/sdc/data Options Reconfigured: cluster.eager-lock: enable performance.io-cache: off performance.read-ahead: off performance.quick-read: off user.cifs: off network.ping-timeout: 30 network.remote-dio: off performance.strict-o-direct: on performance.low-prio-threads: 32 features.shard: on storage.owner-gid: 36 storage.owner-uid: 36 transport.address-family: inet nfs.disable: on The other two hosts will be 192.168.80.192/193  - this is gluster dedicated network over 10GB sfp+ switch. - host 2 wil have identical harware configuration with host 1 ( each disk is actually a raid0 array ) - host 3 has:    -  1 ssd for OS    -  1 ssd - for adding to engine volume in a full replica 3    -  2 ssd's in a raid 1 array to be added as arbiter for the data volume ( ssd-samsung ) So the plan is to have "engine"  scaled in a full replica 3,  and "ssd-samsung" scalled in a replica 3 arbitrated. On Sun, May 26, 2019 at 10:34 AM Strahil <hunter86_bg(a)yahoo.com&gt; wrote: > > Hi Leo, > > Gluster is quite smart, but in order to provide any hints , can you provide output of 'gluster volume info <glustervol>'. > If you have 2 more systems , keep in mind that it is best to mirror the storage on the second replica (2 disks on 1 machine -> 2 disks on the new machine), while for the arbiter this is not neccessary. > > What is your network and NICs ? Based on my experience , I can recommend at least 10 gbit/s  interfase(s). > > Best Regards, > Strahil Nikolov > > On May 26, 2019 07:52, Leo David <leoalex(a)gmail.com&gt; wrote: >> >> Hello Everyone, >> Can someone help me to clarify this ? >> I have a single-node 4.2.8 installation ( only two gluster storage domains - distributed  single drive volumes ). Now I just got two identintical servers and I would like to go for a 3 nodes bundle. >> Is it possible ( after joining the new nodes to the cluster ) to expand the existing volumes across the new nodes and change them to replica 3 arbitrated ? >> If so, could you share with me what would it be the procedure ? >> Thank you very much ! >> >> Leo -- Best regards, Leo David