root@csn4:/mnt/ceph/osd.401# ceph-osd -i 401 -c /etc/ceph/ceph.conf --debug-osd 20 --debug-filestore 20 -d
starting osd.401 at :/0 osd_data /mnt/ceph/osd.401 /var/lib/ceph/osd/ceph-401/journal
2012-11-12 11:23:58.412290 7f2a88df7780  0 ceph version  (commit:), process ceph-osd, pid 16954
2012-11-12 11:23:58.414592 7f2a88df7780  5 filestore(/mnt/ceph/osd.401) basedir /mnt/ceph/osd.401 journal /var/lib/ceph/osd/ceph-401/journal
2012-11-12 11:23:58.414617 7f2a88df7780 10 filestore(/mnt/ceph/osd.401) mount fsid is 98b77c3c-47d9-4371-a695-f77eff001114
2012-11-12 11:23:58.518217 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount FIEMAP ioctl is supported and appears to work
2012-11-12 11:23:58.518226 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount FIEMAP ioctl is disabled via 'filestore fiemap' config option
2012-11-12 11:23:58.518463 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount detected btrfs
2012-11-12 11:23:58.518473 7f2a88df7780 20 filestore(/mnt/ceph/osd.401) _do_clone_range 0~1 to 0
2012-11-12 11:23:58.518491 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs CLONE_RANGE ioctl is supported
2012-11-12 11:23:58.629303 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs SNAP_CREATE is supported
2012-11-12 11:23:58.629401 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs SNAP_DESTROY is supported
2012-11-12 11:23:58.629495 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs START_SYNC is supported (transid 61)
2012-11-12 11:23:58.684843 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs WAIT_SYNC is supported
2012-11-12 11:23:58.688670 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount btrfs SNAP_CREATE_V2 is supported
2012-11-12 11:23:58.829285 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount syncfs(2) syscall fully supported (by glibc and kernel)
2012-11-12 11:23:58.829382 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount found snaps <2,3>
2012-11-12 11:23:58.829413 7f2a88df7780 10 filestore(/mnt/ceph/osd.401)  current/ seq was 3
2012-11-12 11:23:58.829417 7f2a88df7780 10 filestore(/mnt/ceph/osd.401)  most recent snap from <2,3> is 3
2012-11-12 11:23:58.829424 7f2a88df7780 10 filestore(/mnt/ceph/osd.401) mount rolling back to consistent snap 3
2012-11-12 11:23:58.884888 7f2a88df7780  5 filestore(/mnt/ceph/osd.401) mount op_seq is 3
2012-11-12 11:23:58.961930 7f2a88df7780 20 filestore (init)dbobjectmap: seq is 1
2012-11-12 11:23:58.961941 7f2a88df7780 10 filestore(/mnt/ceph/osd.401) open_journal at /var/lib/ceph/osd/ceph-401/journal
2012-11-12 11:23:58.961967 7f2a88df7780  0 filestore(/mnt/ceph/osd.401) mount: enabling PARALLEL journal mode: btrfs, SNAP_CREATE_V2 detected and 'filestore btrfs snap' mode is enabled
2012-11-12 11:23:58.961971 7f2a88df7780 10 filestore(/mnt/ceph/osd.401) list_collections
2012-11-12 11:23:58.962159 7f2a88df7780  1 journal _open /var/lib/ceph/osd/ceph-401/journal fd 17: 1073741824 bytes, block size 4096 bytes, directio = 1, aio = 0
2012-11-12 11:23:58.962169 7f2a84250700 20 filestore(/mnt/ceph/osd.401) sync_entry waiting for max_interval 5.000000
2012-11-12 11:23:58.969139 7f2a88df7780  1 journal _open /var/lib/ceph/osd/ceph-401/journal fd 17: 1073741824 bytes, block size 4096 bytes, directio = 1, aio = 0
2012-11-12 11:23:58.969401 7f2a8124a700 20 filestore(/mnt/ceph/osd.401) flusher_entry start
2012-11-12 11:23:58.969417 7f2a8124a700 20 filestore(/mnt/ceph/osd.401) flusher_entry sleeping
2012-11-12 11:23:58.969562 7f2a88df7780  5 filestore(/mnt/ceph/osd.401) umount /mnt/ceph/osd.401
2012-11-12 11:23:58.969602 7f2a84250700 20 filestore(/mnt/ceph/osd.401) sync_entry force_sync set
2012-11-12 11:23:58.969627 7f2a8124a700 20 filestore(/mnt/ceph/osd.401) flusher_entry awoke
2012-11-12 11:23:58.969631 7f2a8124a700 20 filestore(/mnt/ceph/osd.401) flusher_entry finish
2012-11-12 11:23:58.969896 7f2a88df7780  1 journal close /var/lib/ceph/osd/ceph-401/journal