Igor, I am sure that I'm right in saying that you just have to create a new filesystem (btrfs?) on the new block device, mount it, and then initialise the osd with: ceph-osd -i <the osd number> --mkfs Then you can start the osd with: ceph-osd -i <the osd number> Since you are replacing an osd that already existed, the cluster knows about it, and there is a key for it that is known. I don't claim any great expertise, but this is what I've been doing, and the cluster seems to adopt the new osd and sort everything out. David _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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