On Tue, 13 Jan 2015, Sage Weil wrote: > > 2) Is there any mechanism (that I might have overlooked) to avoid this > > situation, by throttling the flush/evict operations on the fly? If not, > > shouldn't there be one? > > Hmm, we could have a 'noagent' option (similar to noout, nobackfill, > noscrub, etc.) that lets the admin tell the system to stop tiering > movements, but I'm not sure that's wht you're asking for... ...and it looks like we already have a 'notieragent' flag that does exactly that: ceph osd set notieragent and ceph osd unset notieragent That might be helpful in narrowing down what effect flush/evict operations are having... sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html