Ceph » CephFS

- start up mon, mgr, osd
- start up mds (or two)
- but do not create a file system...

ceph -s

gnit:build (wip-ceph-daemon) 02:17 PM $ bin/ceph -c c -k k -s
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
  cluster:
    id:     0a464092-dfd0-11e9-b903-002590e526e8
    health: HEALTH_OK

  services:
    mon: 2 daemons, quorum a,b (age 90s)
    mgr: x(active, since 46s), standbys: y
    osd: 0 osds: 0 up, 0 in

  data:
    pools:   0 pools, 0 pgs
    objects: 0 objects, 0 B
    usage:   0 B used, 0 B / 0 B avail
    pgs:     

gnit:build (wip-ceph-daemon) 02:17 PM $ bin/ceph -c c -k k fs dump
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
dumped fsmap epoch 3
e3
enable_multiple, ever_enabled_multiple: 0,0
compat: compat={},rocompat={},incompat={1=base v0.20,2=client writeable ranges,3=default file layouts on dirs,4=dir inode in separate object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=no anchor table,9=file layout v2,10=snaprealm v2}
legacy client fscid: -1

No filesystems configured
Standby daemons:

4116:   [v2:10.3.64.23:6922/4081174229,v1:10.3.64.23:6923/4081174229] 'k' mds.-1.0 up:standby seq 1
4124:   [v2:10.3.64.23:6924/462925897,v1:10.3.64.23:6925/462925897] 'j' mds.-1.0 up:standby seq 1