Ceph

something similar to

metropolis:teuthology 11:16 AM $ teuthology-lock --list -a --status up |grep locked_by | sort | uniq -c
      1         "locked_by": "dmick@angus", 
      3         "locked_by": "elder@doink", 
      3         "locked_by": "elder@speedy", 
      1         "locked_by": "greg", 
      1         "locked_by": "joao@timesink", 
      7         "locked_by": "joshd@sietchtabr", 
      3         "locked_by": "kenf@ubuntu", 
      6         "locked_by": "kfranklin@ubuntu", 
      1         "locked_by": "nh@flak", 
      8         "locked_by": "nh@latte", 
      5         "locked_by": "nh@metropolis", 
      9         "locked_by": "sage@metropolis", 
      2         "locked_by": "sam@plana20", 
     27         "locked_by": "scheduled_teuthology@teuthology", 
      8         "locked_by": "yehudasa@yehudasa-desktop", 
      4         "locked_by": null, 

but also showing up/down counts?