Hello
I have ~300TB of data in default.rgw.buckets.data k2m2 pool and I would
like to move it to a new k5m2 pool.
I found instructions using cache tiering[1], but they come with a vague
scary warning, and it looks like EC-EC may not even be possible [2] (is
it still the case?).
Can anybody recommend a safe procedure to copy an EC pool's data to
another pool with a more efficient erasure coding? Perhaps there is a
tool out there that could do it?
A few days of downtime would be tolerable, if it will simplify things.
Also, I have enough free space to temporarily store the k2m2 data in a
replicated pool (if EC-EC tiering is not possible, but EC-replicated and
replicated-EC tiering is possible).
Is there a tool or some efficient way to verify that the content of two
pools is the same?
Thanks,
Vlad
[1] https://ceph.io/geen-categorie/ceph-pool-migration/
[2]
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-February/016109.html
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