health HEALTH_WARN mds a,b,c,d are laggy; 1 mons down, quorum 0,1 a,c
   monmap e8: 3 mons at {a=192.168.1.3:6789/0,c=192.168.1.4:6789/0,d=192.168.1.6:6789/0}, election epoch 2, quorum 0,1 a,c
   osdmap e978: 8 osds: 8 up, 8 in
    pgmap v30362: 776 pgs: 776 active+clean; 61741 MB data, 123 GB used, 857 GB / 990 GB avail
   mdsmap e2727: 8/8/8 up {0=d=up:resolve(laggy or crashed),1=d=up:resolve,2=b=up:resolve(laggy or crashed),3=c=up:resolve(laggy or crashed),4=a=up:replay,5=c=up:replay,6=b=up:resolve,7=a=up:active(laggy or crashed)}