On 02/28/17 18:55, Heller, Chris wrote: > Quick update. So I'm trying out the procedure as documented here. > > So far I've: > > 1. Stopped ceph-mds > 2. set noout, norecover, norebalance, nobackfill > 3. Stopped all ceph-osd > 4. Stopped ceph-mon > 5. Installed new OS > 6. Started ceph-mon > 7. Started all ceph-osd > > This is where I've stopped. All but one OSD came back online. One has > this backtrace: > > 2017-02-28 17:44:54.884235 7fb2ba3187c0 -1 journal > FileJournal::_open: disabling aio for non-block journal. Use > journal_force_aio to force use of aio anyway > Are the journals inline? or separate? If they're separate, the above means the journal symlink/config is missing, so it would possibly make a new journal, which would be bad if you didn't flush the old journal before.
And also just one osd is easy enough to replace (which I wouldn't do until the cluster settled down and recovered). So it's lame for it to be broken, but it's still recoverable if that's the only issue.
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