Hi,
I haven't done this myself yet but you should be able to simply move
the (virtual) disk to the new host and start the OSD, depending on the
actual setup. If those are stand-alone OSDs (no separate DB/WAL) it
shouldn't be too difficult [1]. If you're using ceph-volume you could
run 'ceph-volume lvm trigger' in case the OSD doesn't restart.
Although this would not reconstruct data it would start a rebalance
process since the crushmap will change automatically, leading to
misplaced objects.
Regards,
Eugen
[1] http://lists.ceph.com/pipermail/ceph-users-ceph.com/2018-March/025624.html
Zitat von huxiaoyu@xxxxxxxxxxxx:
Dear ceph folks,
I encoutered an interesting situation as follows: an old FC SAN is
connected two ceph OSD nodes, and its LUNs are used as virtual OSDs.
When one node fails, its LUN can be taken over by anther node. My
question is, how to start up the OSD on the new node without
reconstructing its data? In other words, is there a simple to move
OSD from one node to another?
many thanks,
samuel
huxiaoyu@xxxxxxxxxxxx
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