On 11 October 2017 at 22:21, <lemonnierk@xxxxxxxxx> wrote:
> corruption happens only in this cases:
>
> - volume with shard enabled
> AND
> - rebalance operation
>
I believe so
> So, what If I have to replace a failed brick/disks ? Will this trigger
> a rebalance and then corruption?
>
> rebalance, is only needed when you have to expend a volume, ie by
> adding more bricks ?
That's correct, replacing a brick shouldn't cause corruption, I've done
it a few times without any problems. As long as you don't expand the
cluster, you are fine.
Basically you can add or remove replicas all you want, but you can't add
new replica sets.
Or remove a replica set. An add-brick will not trigger a rebalance - that needs to be done explicitly. However, a remove-brick will start the rebalance automatically.
Regards,
Nithya
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