This should clear things up a bit - https://joejulian.name/blog/glusterfs-split-brain-recovery-made-easy/ even
On Thu, Jun 4, 2015 at 9:40 AM, Юрий Полторацкий <[email protected]> wrote: > Hi, > > Pardon me for jumping in subj, but... > > Could you explain me in a few words or give a link where to read about > "split-brain"? > > I made a lab: cluster (virt and gluster services both) based on two server. > With this options: > cluster.server-quorum-type none > cluster.quorum-type fixed > cluster.quorum-count 1 > I get a cluster that worked just fine even with only one host alive. > > I have run VM on a not SPM host B, have made some files, then on the SPM > host A have stoped network service (host has gone, no power management), > have made some huge files on the VM again, after that I have rebooted > manualy the host A and there was no unexpected result. VM have worked > without problem, I have rebooted the VM several times and there were no > problems with any files I have made before. > > I want to build a cluster with only two hosts, because I have only two good > servers free, and only 8x3TB HDD (for RAID10 in each host). To get one more > server and 4HDD is unbelievable in a close future.. > > Thanks. > > > 2015-06-03 16:54 GMT+03:00 Simone Tiraboschi <[email protected]>: >> >> >> >> ----- Original Message ----- >> > From: "Kiril L" <[email protected]> >> > To: [email protected] >> > Sent: Wednesday, June 3, 2015 3:32:52 PM >> > Subject: [ovirt-users] Is it a plausible configuration? >> > >> > Would you please tell me if this configuration is doable or there is >> > something that i am missing? >> > >> > I would like to use only two servers (X and Y) for VDI and Gluster >> > based storage. >> > Hosted engine for oVirt and replicated volumes between X and Y for the >> > gluster storage. Is a third machine Z a must? >> >> It works also with just two hosts but it's not that safe: a replica-2 >> GlusterFS volume affected by a split-brain issue could be not self-healing >> while with replica-3 you could rely on quorum enforcement just cause you are >> using an odd host number. >> >> For oVirt 3.6 we are working on >> http://www.ovirt.org/Features/Self_Hosted_Engine_Hyper_Converged_Gluster_Support >> >> >> > _______________________________________________ >> > Users mailing list >> > [email protected] >> > http://lists.ovirt.org/mailman/listinfo/users >> > >> _______________________________________________ >> Users mailing list >> [email protected] >> http://lists.ovirt.org/mailman/listinfo/users > > _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
