Hello everyone,
Let's say I have an Erasure coded pool (Jerasure, Reed Salomon) with k = 6 and m = 3, distributed among 3 hosts, with 3 OSDs each. Everything seems nice and working (this is just an example), but I'm reaching the total usable capacity of my pool.
What should I do?
Can I just add another 3 OSD pool without touching the k and m variables and be just fine? Should I change the k (and/or m), will Ceph migrate data between hosts, causing bandwidth bottlenecks in the process?
I'm very confused about it, as every tutorial and docs take for granted k+m = OSDs, but neither say about adding more OSDs and hosts to an existing erasure cluster.
I'll be pretty glad if someone could help me, please.
Best regards,
- Leonidas.
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