For a variety of reasons, none good anymore, we have two separate Ceph
clusters.

I would like to merge them onto the newer hardware, with as little
downtime and data loss as possible; then discard the old hardware.

Cluster A (2 hosts):
- 3TB of S3 content, >100k files, file mtimes important
- <500GB of RBD volumes, exported via iscsi

Cluster B (4 hosts):
- <50GiB of S3 content
- 7TB of RBD volumes, exported via iscsi

Short of finding somewhere to dump all of the data from one side, and
re-importing it after merging with that cluster as empty; are there any
other alternatives available to me?

-- 
Robin Hugh Johnson
Gentoo Linux: Developer, Infrastructure Lead
E-Mail     : robb...@gentoo.org
GnuPG FP   : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85
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