On Mon, 7 Jul 2014, James Harper wrote: > > > > Hi Sage, > > > > > Thanks for pointing this out. Is this clearer? > > > > Yes. Although it would probably be useful to say that using 'ceph osd > > crush tunables bobtail' will be enough to get rid of the warning and > > will not break compatibility too much (3.15 isn't that common, there > > is not even any longterm release above it). > > > > As per an email I sent a few days ago - setting tunables to optimal (or > whatever the setting is that makes the warning go away) caused a cascade > of OSD crashes. Maybe those settings are not production ready yet? This looked like a bug when not all monitors were upgraded yet. It's been fixed in master and backported to the firefly branch, but 0.80.2 has not yet been cut--it will be fixed in that version. Until then, make sure all monitors are upgraded and restarted before setting optimal tunables. http://tracker.ceph.com/issues/8738 sage
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