Florian, good morning.
You are correct, just change the size property of each pool. Ceph will
perform all possible operations, just worry about the amount of free
storage.
Em sex., 11 de nov. de 2022 às 10:50, Florian Jonas <florian.jonas@xxxxxxx>
escreveu:
> Dear all,
>
> we are running a small cluster with about 80TB of storage which evolved
> over time and increased in complexity and number of users. In the
> beginning, we had started operating the cluster without any replicas
> (pool size 1), but due to the size of the project we now wish to offer
> redundancy in case of failures.
>
> Can anyone offer insights into the procedure to increase the number of
> replicas? So far from what I gather, I imagine it goes something likes
> this:
>
> 1. Make sure more than half of the disk space is free
>
> 2. ceph osd pool set {poolname} size 2 (if we want to have one replica),
> and we do so for each pool (data and metadata)
>
> Can somebody confirm that this is how it works? Is it as simple as
> changing it for the existing filesystem as described above or do we need
> to start from scratch? Is there anything we need to watch out for? Will
> ceph then just start moving things around as needed, similar to the
> normal rebalancing procedures?
>
> Thank you for any insights,
>
> Florian (a newbie admin trying to improve his ceph knowledge)
>
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