digraph OpenNebula {
    graph [
        nodesep= 0.6,
        ratio=0.6,
        pad=1,
    ];

    node [fontname="Helvetica"];
    edge [fontname="Menlo"];
    
    user [
        fillcolor="black",
        style="filled", shape="box",
        fontcolor="white", fontsize= "24.0"];

    ANY [ shape="box", fontsize= "24.0" ];
    "ANY " [ shape="box", fontsize= "24.0" ];

    #subgraph { rank = min; user}
    #subgraph { rank = same; pending; hold; color="white"}

    subgraph { rank = same; user; pending; prolog; boot; color="white"}

    subgraph { rank = same; save; shutdown; unknown; hotplug; snapshot;
        color="white" }
    subgraph { rank = same; epilog; migrate; ANY; color="white" }
    subgraph { rank = max; suspended; done; failure; stopped; poweroff; undeployed; color="white" }

#   create
    user -> pending [label="instantiate"];

#   deploy
    pending     -> prolog [label="deploy"];
    prolog      -> boot [style="dashed", color="navy", fontcolor="navy"];
    boot        -> running [style="dashed", color="navy", fontcolor="navy"];

#   terminate
    #running     -> shutdown [label="terminate [--hard]"];
    shutdown    -> epilog [label="undeploy/\nterminate [--hard]", style="dashed", color="navy", fontcolor="navy"];
    epilog      -> done [label="terminate [--hard]", style="dashed", color="navy", fontcolor="navy"];

#   poweroff
    running     -> shutdown [label="poweroff/\nundeploy/\nterminate [--hard]"];
    shutdown    -> poweroff [label="poweroff", style="dashed", color="navy", fontcolor="navy"];

#   livemigrate
    running     -> migrate [label="migrate\n[--live]"];
    migrate     -> running [label="migrate\n--live", style="dashed", color="navy", fontcolor="navy"];

#   migrate
    #running     -> save [label="migrate"];
    save        -> migrate [label="migrate", style="dashed", color="navy", fontcolor="navy"];
    migrate     -> boot [label="migrate", style="dashed", color="navy", fontcolor="navy"];

#   hold
    pending     -> hold [label="hold"];

#   release
    hold        -> pending [label="release"];

#   stop
    running     -> save [label="stop/\nsuspend/\nmigrate"];
    save        -> epilog [label="stop", style="dashed", color="navy", fontcolor="navy"];
    epilog      -> stopped [label="stop", style="dashed", color="navy", fontcolor="navy"];

#   undeploy
    #running     -> shutdown [label="undeploy"];
    #shutdown    -> epilog [label="undeploy", style="dashed", color="navy", fontcolor="navy"];
    epilog      -> undeployed [label="undeploy", style="dashed", color="navy", fontcolor="navy"];

#   suspend
    #running     -> save [label="suspend"];
    save        -> suspended [label="suspend", style="dashed", color="navy", fontcolor="navy"];

#   resume
    stopped     -> pending [label="resume"];
    undeployed  -> pending [label="resume"];
    suspended   -> boot [label="resume"];
    poweroff    -> boot [label="resume"];

#   delete
    ANY         -> epilog [label="terminate\n[--hard]"];

#   restart
    unknown     -> boot [label="boot"];
    boot        -> boot [label="boot"];

#   reboot
    running     -> running [label="reboot"];

#   disk-attach nic-attach
#    running     -> hotplug [label="disk / nic -\n attach / detach"]
    running     -> hotplug [label="disk / nic\nattach"]
    hotplug     -> running [style="dashed", color="navy", fontcolor="navy"];

#   snapshot
    running     -> snapshot [label="snapshot-*"]
    snapshot    -> running [style="dashed", color="navy", fontcolor="navy"];

#   failures and misc.
    "ANY "  -> failure [style="dotted", color="red"];

    running -> unknown [style="dotted", color="red"];
    #unknown -> running [style="dashed", color="navy", fontcolor="navy"];
}