On Mon, 10 Jul 2017, Luis Periquito wrote: > Hi Dan, > > I've enabled it in a couple of big-ish clusters and had the same > experience - a few seconds disruption caused by a peering process > being triggered, like any other crushmap update does. Can't remember > if it triggered data movement, but I have a feeling it did...
That's consistent with what one should expect. The flag triggers a new peering interval, which means the PGs will peer, but there is no change in the mapping or data layout or anything else. The only thing that is potentially scary here is that *every* PG will repeer at the same time. sage > > > > On Mon, Jul 10, 2017 at 3:17 PM, Dan van der Ster <d...@vanderster.com> wrote: > > Hi all, > > > > With 10.2.8, ceph will now warn if you didn't yet set sortbitwise. > > > > I just updated a test cluster, saw that warning, then did the necessary > > ceph osd set sortbitwise > > > > I noticed a short re-peering which took around 10s on this small > > cluster with very little data. > > > > Has anyone done this already on a large cluster with lots of objects? > > It would be nice to hear that it isn't disruptive before running it on > > our big production instances. > > > > Cheers, Dan > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
