Tommi Virtanen <tommi.virtanen <at> dreamhost.com> writes: > > You don't mount pools directly; there's filesystem metadata (as > managed by metadata servers) that is needed too. > > What you probably want is to specify that a subtree of your ceph dfs > stores the file data in a separate pool, using "cephfs > /mnt/ceph/some/subtree set_layout --pool 6". Note that a numerical > pool id is currently required. > > http://ceph.newdream.net/docs/master/man/8/cephfs/ > > You can mount any subtree of the ceph dfs directly, using > 10.32.0.10:6789:/some/subtree in your mount command. > Hi Tommi, We have tried setting the layout as described below with: 'cephfs /mnt/ceph-backup/ set_layout --pool 3' However, I only ever receive the following output; 'Error setting layout: Invalid argument' I can run other view the current layout of the mount point, but cannot change the pool layout. My understanding of the numeric pool is as follows: root@dsan-test:/mnt# ceph osd dump -o -|grep 'pool' pool 0 'data' rep size 2 crush_ruleset 0 pool 1 'metadata' rep size 2 crush_ruleset 1 pool 2 'rbd' rep size 2 crush_ruleset 2 pool 3 'backup' rep size 2 crush_ruleset 0 (omitted detail I thought unnecessary) Therefore the backup pool which we specifically want to mount is 3? Are you able to assist with the syntax for cephfs set_layout? Thanks Grant -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
