Hello, ceph operators... Several times in the past we've had to do some ondisk format conversion during upgrade which mean that the first time the ceph-osd daemon started after upgrade it had to spend a few minutes fixing up it's ondisk files. We haven't had to recently, though, and generally try to avoid such things. However, there's a change we'd like to make in FileStore for luminous (*) and it would save us a lot of time and complexity if it was a one-shot update during the upgrade. I would probably take in the neighborhood of 1-5 minutes for a 4-6TB HDD. That means that when restarting the daemon during the upgrade the OSD would stay down for that period (vs the usual <1 restart time). Does this concern anyone? It probably means the upgrades will take longer if you're going host by host since the time per host will go up. sage * eliminate 'snapdir' objects, replacing them with a head object + whiteout. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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