You just use a type other than "rack" in your chooseleaf rule. In your case, "host". When using chooseleaf, the bucket type you specify is the failure domain which it must segregate across. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com On Tue, May 13, 2014 at 12:52 AM, Cao, Buddy <buddy.cao at intel.com> wrote: > Hi, > > > > I have a crushmap structure likes root->rack->host->osds. I designed the > rule below, since I used ?chooseleaf?rack? in rule definition, if there is > only one rack in the cluster, the ceph gps will always stay at stuck unclean > state (that is because the default metadata/data/rbd pool set 2 replicas). > Could you let me know how do I configure the rule to let it can also work in > a cluster with only one rack? > > > > rule ssd{ > > ruleset 1 > > type replicated > > min_size 0 > > max_size 10 > > step take root > > step chooseleaf firstn 0 type rack > > step emit > > } > > > > BTW, if I add a new rack into the crushmap, the pg status will finally get > to active+clean. However, my customer do ONLY have one rack in their env, so > hard for me to have workaround to ask him setup several racks. > > > > Wei Cao (Buddy) > > > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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