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> > You should first upgrade servers and then clients. New servers can > understand old clients, but it is not easy for old servers to understand new > clients in case it started doing something new. But isn't that the reason op-version exists? So that regardless of client/server mix, nobody tries to do "new" things above the current op-version? He is not changing mayor

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On Mon, Jul 10, 2017 at 10:33 PM, Mahdi Adnan <mahdi.adnan at outlook.com> wrote: > I upgraded from 3.8.12 to 3.8.13 without issues. > > Two replicated volumes with online update, upgraded clients first and > followed by servers upgrade, "stop glusterd, pkill gluster*, update > gluster*, start glusterd, monitor healing process and logs, after > completion proceed to