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...lica 2 glusterp1:/bricks/brick1/gv0 glusterp2:/bricks/brick1/gv0 glusterp3:/bricks/brick1/gv0 glusterp4:/bricks/brick1/gv0 Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/ . Do you still want to continue? (y/n) n Usage: volume create <NEW-VOLNAME> [stripe <COUNT>] [replica <COUNT> [arbiter <COUNT>]] [disperse [<COUNT>]] [disperse-data <COUNT>] [redundancy <COUNT>] [transport <tcp|rdma|tcp,rdma>] <NEW-B...

...:/bricks/brick1/gv0 glusterp2:/bricks/brick1/gv0 glusterp3:/bricks/brick1/gv0 glusterp4:/bricks/brick1/gv0 8><---- Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/ . Do you still want to continue? (y/n) n 8><----- Looking at both gluster docs and redhat docs this seems un-expected. regards Steven -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachme...

...rick1/gv0 > glusterp2:/bricks/brick1/gv0 glusterp3:/bricks/brick1/gv0 > glusterp4:/bricks/brick1/gv0 > Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to > avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/ > Split%20brain%20and%20ways%20to%20deal%20with%20it/. > Do you still want to continue? > (y/n) n > > Usage: > volume create <NEW-VOLNAME> [stripe <COUNT>] [replica <COUNT> [arbiter > <COUNT>]] [disperse [<COUNT>]] [disperse-data <COUNT>] [redundancy <COUNT>] > [transport &lt...

I've configured 6 bricks as distributed-replicated with replica 2, expecting that all active bricks would be usable so long as a quorum of at least 4 live bricks is maintained. However, I have just found http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/ Which states that "In a replica 2 volume... If we set the client-quorum option to auto, then the first brick must always be up, irrespective of the status of the second brick. If only the second brick is up, the subvolume becomes read-only." Does this apply only to a two-br...

Hi Neil, docs mention two live nodes of replica 3 blaming each other and refusing to do IO. https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/#1-replica-3-volume On Sep 7, 2017 17:52, "Alastair Neil" <ajneil.tech at gmail.com> wrote: > *shrug* I don't use arbiter for vm work loads just straight replica 3. > There are some gotchas with using an arbiter for VM workloads. If > quorum-type is aut...

...ica 2 transport tcp pri.ostechnix.lan:/gluster/brick1/mpoint1 sec.ostechnix.lan:/gluster/brick1/mpoint1 force > Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/ <https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/>. > Do you still want to continue? > (y/n) y > volume create: myvol1: failed: Host pri.ostechnix.lan is not in 'Peer in Cluster' state > >...

*shrug* I don't use arbiter for vm work loads just straight replica 3. There are some gotchas with using an arbiter for VM workloads. If quorum-type is auto and a brick that is not the arbiter drop out then if the up brick is dirty as far as the arbiter is concerned i.e. the only good copy is on the down brick you will get ENOTCONN and your VMs will halt on IO. On 6 September 2017 at 16:06,

...replica 2 transport tcp pri.ostechnix.lan:/gluster/brick1/mpoint1 sec.ostechnix.lan:/gluster/brick1/mpoint1 force Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/. Do you still want to continue? (y/n) y volume create: myvol1: failed: Host pri.ostechnix.lan is not in 'Peer in Cluster' state node 1 glusterd.log is here root at pri:/var/log/glusterfs# cat glusterd.log [2018-02-06 13:28:37.638373] W [glusterfsd.c:1331:cleanup_and_exit] (...

...tcp pri.ostechnix.lan:/gluster/brick1/mpoint1 > sec.ostechnix.lan:/gluster/brick1/mpoint1 force > Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to > avoid this. See: https://gluster.readthedocs.io/en/latest/Administrator% > 20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/. > Do you still want to continue? > (y/n) y > volume create: myvol1: failed: Host pri.ostechnix.lan is not in 'Peer in > Cluster' state > > node 1 glusterd.log is here > > root at pri:/var/log/glusterfs# cat glusterd.log > [2018-02-06 13:28:37.638373...

...On 7 September 2017 at 14:06, Pavel Szalbot <pavel.szalbot at gmail.com> wrote: > Hi Neil, docs mention two live nodes of replica 3 blaming each other and > refusing to do IO. > > https://gluster.readthedocs.io/en/latest/Administrator% > 20Guide/Split%20brain%20and%20ways%20to%20deal%20with% > 20it/#1-replica-3-volume > > > > On Sep 7, 2017 17:52, "Alastair Neil" <ajneil.tech at gmail.com> wrote: > >> *shrug* I don't use arbiter for vm work loads just straight replica 3. >> There are some gotchas with using an arbiter for VM wor...

Sharding is not enabled. Ludwig On Mon, Sep 25, 2017 at 2:34 PM, <lemonnierk at ulrar.net> wrote: > Do you have sharding enabled ? If yes, don't do it. > If no I'll let someone who knows better answer you :) > > On Mon, Sep 25, 2017 at 02:27:13PM -0400, Ludwig Gamache wrote: > > All, > > > > We currently have a Gluster installation which is made of 2

...ume with replica 2, the data will have 2 copies, and considering your scenario of quorum to be taken on the total number of bricks will lead to split-brains. > > However, I have just found > > http://docs.gluster.org/en/latest/Administrator%20Guide/ > Split%20brain%20and%20ways%20to%20deal%20with%20it/ > > Which states that "In a replica 2 volume... If we set the client-quorum > option to auto, then the first brick must always be up, irrespective of > the status of the second brick. If only the second brick is up, the > subvolume becomes read-only." > By d...

...t tcp pri.ostechnix.lan:/gluster/brick1/mpoint1 > sec.ostechnix.lan:/gluster/brick1/mpoint1 force > Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to > avoid this. See: > https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/. > Do you still want to continue? > (y/n) y > volume create: myvol1: failed: Host pri.ostechnix.lan is not in 'Peer in > Cluster' state > > node 1 glusterd.log is here > > root at pri:/var/log/glusterfs# cat glusterd.log > [2018-02-06 13:28:37.638373...

...bricks/brick1/gv0 glusterp3:/bricks/brick1/gv0 >> glusterp4:/bricks/brick1/gv0 >> Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to >> avoid this. See: http://docs.gluster.org/en/lat >> est/Administrator%20Guide/Split%20brain%20and%20ways%20to% >> 20deal%20with%20it/. >> Do you still want to continue? >> (y/n) n >> >> Usage: >> volume create <NEW-VOLNAME> [stripe <COUNT>] [replica <COUNT> [arbiter >> <COUNT>]] [disperse [<COUNT>]] [disperse-data <COUNT>] [redundancy <COUNT&...

...Pavel Szalbot <pavel.szalbot at gmail.com> > wrote: > >> Hi Neil, docs mention two live nodes of replica 3 blaming each other and >> refusing to do IO. >> >> https://gluster.readthedocs.io/en/latest/Administrator%20Gui >> de/Split%20brain%20and%20ways%20to%20deal%20with%20it/#1-replica-3-volume >> >> >> >> On Sep 7, 2017 17:52, "Alastair Neil" <ajneil.tech at gmail.com> wrote: >> >>> *shrug* I don't use arbiter for vm work loads just straight replica 3. >>> There are some gotchas with using...