And also make sure the OSD<-> mapping is correct with "ceph osd tree". :)
On Fri, May 4, 2018 at 1:44 AM Matthew Vernon <m...@sanger.ac.uk> wrote: > Hi, > > On 04/05/18 08:25, Tracy Reed wrote: > > On Fri, May 04, 2018 at 12:18:15AM PDT, Tracy Reed spake thusly: > >> > https://jcftang.github.io/2012/09/06/going-from-replicating-across-osds-to-replicating-across-hosts-in-a-ceph-cluster/ > > <snip> > >> How can I tell which way mine is configured? I could post the whole > >> crushmap if necessary but it's a bit large to copy and paste. > > > > To further answer my own question (sorry for the spam) the above linked > > doc says this should do what I want: > > > > step chooseleaf firstn 0 type host > > > > which is what I already have in my crush map. So it looks like the > > default is as I want it. In which case I wonder why I had the problem > > previously... I guess the only way to know for sure is to stop one osd > > node and see what happens. > > You can ask ceph which OSDs a particular pg is on: > > root@sto-1-1:~# ceph pg map 71.983 > osdmap e435728 pg 71.983 (71.983) -> up [1948,2984,511] acting > [1948,2984,511] > > ...then you can check these are on different hosts. > > HTH, > > Matthew > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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