Hi Haomai,
Not sure if you saw
http://tracker.ceph.com/issues/9580
which came from an issue Mark had getting ceph-disk to work with the
keyvaluestore backend. I think the answer is to make a command
like
ceph-osd -i 123 --check-needs-journal
to query whether the configured backend wants a journal backend. That
would let ceph-disk skip the work. Would need to be careful to
distinguish between errors and a true/false answer.
Any interest in wiring that up?
sage
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