[Gluster-users] Upgrading Gluster revision (3.8.12 to 3.8.13) caused underlying VM fs corruption

[Pavel Szalbot]

Well it was probably caused by running replica 2 and doing online
upgrade. However I added brick, turned volume to replica 3 with
arbiter and got very strange issue I will mail to this list in a
moment...

Thanks.
-ps


On Tue, Jul 11, 2017 at 1:55 PM, Pranith Kumar Karampuri
<pkarampu at redhat.com> wrote:
>
>
> On Tue, Jul 11, 2017 at 5:12 PM, Diego Remolina <dijuremo at gmail.com> wrote:
>>
>> >
>> > 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 versions, just a small step from 3.8.12 to
>> 3.8.13. Corruption should not be happening.
>
>
> For some reason 3.8 upgrade guide is not where it is supposed to be.
> We highly recommend upgrading servers ahead of clients.
> https://github.com/nixpanic/glusterdocs/commit/f6d48dc17f2cb6ee4680e372520ec3358641b2bc
>
> I think at some point it is better to make this mandatory. Without a
> predefined way of upgrading, it is very difficult to fix bugs in backward
> compatible manner.
>
> I am not sure why the corruption happened either :-(. Pavel, could you give
> log files may be?
>
>>
>> Diego
>> _______________________________________________
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>> Gluster-users at gluster.org
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>
>
>
>
> --
> Pranith
>
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