Synnefo » snf-ganeti » ganeti-local

A graph with the possible transitions follows; note that in the graph,

following the implementation, the two ``Needs repair`` states have been

coalesced into one; and the ``Suspended`` state disapears, for it

becames an attribute of the instance object (its auto-repair policy).

.. digraph:: "auto-repair-states"

  node     [shape=circle, style=filled, fillcolor="#BEDEF1",

            width=2, fixedsize=true];

  healthy  [label="Healthy"];

  needsrep [label="Needs repair"];

  pendrep  [label="Pending repair"];

  failed   [label="Failed repair"];

  disabled [label="(no state)", width=1.25];

  {rank=same; needsrep}

  {rank=same; healthy}

  {rank=same; pendrep}

  {rank=same; failed}

  {rank=same; disabled}

  // These nodes are needed to be the "origin" of the "initial state" arrows.

  node [width=.5, label="", style=invis];

  inih;

  inin;

  inip;

  inif;

  inix;

  edge [fontsize=10, fontname="Arial Bold", fontcolor=blue]

  inih -> healthy  [label="No tags or\nresult:success"];

  inip -> pendrep  [label="Tag:\nautorepair:pending"];

  inif -> failed   [label="Tag:\nresult:failure"];

  inix -> disabled [fontcolor=black, label="ArNotEnabled"];

  edge [fontcolor="orange"];

  healthy -> healthy [label="No problems\ndetected"];

  healthy -> needsrep [

             label="Brokeness\ndetected in\nfirst half of\nthe tool run"];

  pendrep -> healthy [

             label="All jobs\ncompleted\nsuccessfully /\ninstance healthy"];

  pendrep -> failed [label="Some job(s)\nfailed"];

  edge [fontcolor="red"];

  needsrep -> pendrep [

              label="Repair\nallowed and\ninitial job(s)\nsubmitted"];

  needsrep -> needsrep [

              label="Repairs suspended\n(no-op) or enabled\nbut not powerful enough\n(result: enoperm)"];

  pendrep -> pendrep [label="More jobs\nsubmitted"];