Hi guys, I'm running a ceph cluster using 0.94.9-1trusty release on XFS for RBD only. I'd like to replace some SSDs because they are close to their TBW.
I know I can simply shutdown the OSD, replace the SSD, restart the OSD and ceph will take care of the rest. However I don't want to do it this way, because it leaves my cluster for the time of the rebalance/ backfilling in a degraded state. I'm thinking about this process: 1. keep old OSD running 2. copy all data from current OSD folder to new OSD folder (using rsync) 3. shutdown old OSD 4. redo step 3 to update to the latest changes 5. restart OSD with new folder Are there any issues with this approach? Do I need any special rsync flags (rsync -avPHAX --delete-during)? Thank you!
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