Thanks for your reply. So the way I understand is that it can be upgraded but with a downtime, which means that there are no clients writing to this gluster volume, as the volume is stopped. But post a upgrade we will still have the data on the gluster volume that we had before the upgrade(but with downtime). - Hemant On 9/13/17 2:33 PM, Diego Remolina wrote: > Nope, not gonna work... I could never go even from 3.6. to 3.7 without > downtime cause of the settings change, see: > > http://lists.gluster.org/pipermail/gluster-users.old/2015-September/023470.html > > Even when changing options in the older 3.6.x I had installed, my new > 3.7.x server would not connect, so had to pretty much stop gluster in > all servers, update to 3.7.x offline, then start gluster and all > servers would see each other just fine. > > Diego > > On Tue, Sep 12, 2017 at 6:15 PM, Hemant Mamtora <hemantrm@xxxxxxxxxxx> wrote: >> I was looking to upgrade Gluster server from ver 3.5.X to 3.8.X. >> >> I have already tried it in offline upgrade mode and that works, I am >> interested in knowing if this upgrade of gluster server version can be >> in online upgrade mode. >> >> Many thanks in advance. >> >> -- >> - Hemant Mamtora >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users@xxxxxxxxxxx >> http://lists.gluster.org/mailman/listinfo/gluster-users -- - Hemant Mamtora _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users