[Gluster-users] Add/remove new server volumes on the fly?

[ferrety ferrety]

Hi guys,

>>
>> 1. While learning GlusterFS, I'was wondering if it's possible to add
>> server volumes to increase space capacity of my cluster "on the FLY"?
>> I mean, a hot upgrade.
>
> I'd *think* could could add bricks to an existing unify volume.  I'm not
> sure if you'd have to remount the clients or not.  you'd have to restart the
> server--I'm not sure of a sighup will do the job or not.  Someone more
> qualified will answer I'm sure, but I'd think just adding bricks will add
> space.

I'll try to see by myself.

>
>> 2. Second, when using "files replicating strategy" (scheduler), is it
>> possible to remove a server node  without stopping the hole cluster
>> (ex. hardware maintaining reasons, add more disk/ram to the node ...)?
>
> if you have multiple servers AFR'ed, if one server is down, the rest will
> continue after the timeout period.  when that servers back on line it will
> coninue AFRing to it.
> Remember, AFR does healing when files are accessed, so the server that's
> offline may be out of sync until any updated files are accessed again.

Hmmm. Could it be possible to force it to synchronize itself when it's back?


Thanks
F.