ceph/doc/cephfs/mds-state-diagram.dot

   1 digraph {
   2
   3 node [shape=circle,style=unfilled,fixedsize=true,width=2.0]
   4
   5 node [color=blue,peripheries=1];
   6 N0 [label="up:boot"]
   7
   8 node [color=green,peripheries=1];
   9 S1 [label="up:standby"]
  10 N0 -> S1 [color=green,penwidth=2.0];
  11 S2 [label="up:standby_replay"]
  12 S1 -> S2 [color=green,penwidth=2.0];
  13
  14 node [color=orange,peripheries=2];
  15 N1 [label="up:creating"]
  16 S1 -> N1 [color=orange,penwidth=2.0];
  17 N2 [label="up:starting"]
  18 S1 -> N2 [color=orange,penwidth=2.0];
  19 N3 [label="up:replay"]
  20 S1 -> N3 [color=orange,penwidth=2.0];
  21 S2 -> N3 [color=orange,penwidth=2.0];
  22 N4 [label="up:resolve"]
  23 N3 -> N4 [color=orange,penwidth=2.0];
  24 N5 [label="up:reconnect"]
  25 N3 -> N5 [color=orange,penwidth=2.0];
  26 N4 -> N5 [color=orange,penwidth=2.0];
  27 N6 [label="up:rejoin"]
  28 N5 -> N6 [color=orange,penwidth=2.0];
  29 N7 [label="up:clientreplay"]
  30 N6 -> N7 [color=orange,penwidth=2.0];
  31
  32 node [color=green,peripheries=2];
  33 S0 [label="up:active"]
  34 N7 -> S0 [color=green,penwidth=2.0];
  35 N1 -> S0 [color=green,penwidth=2.0];
  36 N2 -> S0 [color=green,penwidth=2.0];
  37 N6 -> S0 [color=green,penwidth=2.0];
  38
  39 // going down but still accessible by clients
  40 node [color=purple,peripheries=2];
  41 S3 [label="up:stopping"]
  42 S0 -> S3 [color=purple,penwidth=2.0];
  43
  44 // terminal (but "in")
  45 node [shape=polygon,sides=6,color=red,peripheries=2];
  46 D0 [label="down:failed"]
  47 N2 -> D0 [color=red,penwidth=2.0];
  48 N3 -> D0 [color=red,penwidth=2.0];
  49 N4 -> D0 [color=red,penwidth=2.0];
  50 N5 -> D0 [color=red,penwidth=2.0];
  51 N6 -> D0 [color=red,penwidth=2.0];
  52 N7 -> D0 [color=red,penwidth=2.0];
  53 S0 -> D0 [color=red,penwidth=2.0];
  54 S3 -> D0 [color=red,penwidth=2.0];
  55 D0 -> N3 [color=red,penwidth=2.0];
  56
  57 // terminal (but not "in")
  58 node [shape=polygon,sides=6,color=black,peripheries=1];
  59 D1 [label="down:damaged"]
  60 S2 -> D1 [color=black,penwidth=2.0];
  61 N3 -> D1 [color=black,penwidth=2.0];
  62 N4 -> D1 [color=black,penwidth=2.0];
  63 N5 -> D1 [color=black,penwidth=2.0];
  64 N6 -> D1 [color=black,penwidth=2.0];
  65 N7 -> D1 [color=black,penwidth=2.0];
  66 S0 -> D1 [color=black,penwidth=2.0];
  67 S3 -> D1 [color=black,penwidth=2.0];
  68 D1 -> D0 [color=red,penwidth=2.0]
  69
  70 node [shape=polygon,sides=6,color=purple,peripheries=1];
  71 D3 [label="down:stopped"]
  72 S3 -> D3 [color=purple,penwidth=2.0];
  73 N6 -> D3 [color=purple,penwidth=2.0];
  74
  75 }