Hello, I started to work with CEPH few weeks ago, I might ask a very newbie question, but I could not find an answer in the docs or in the ml archive for this. Quick description of my setup: I have a ceph cluster with two servers. Each server has 3 SSD drives I use for journal only. To map to different failure domains SAS disks that keep a journal to the same SSD drive, I wrote my own crushmap. I have now a total of 36OSD. Ceph health returns HEALTH_OK. I run the cluster with a couple of pools with size=3 and min_size=3 Production operations questions: I manually stopped some OSDs to simulate a failure. As far as I understood, an "OSD down" condition is not enough to make CEPH start making new copies of objects. I noticed that I must mark the OSD as "out" to make ceph produce new copies. As far as I understood min_size=3 puts the object in readonly if there are not at least 3 copies of the object available. Is this behavior correct or I made some mistake creating the cluster ? Should I expect ceph to produce automatically a new copy for objects when some OSDs are down ? There is any option to mark automatically "out" OSDs that go "down" ? thanks Saverio _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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