Shutdown<A NAME=1081> </A>

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A pvmd shuts down when it is deleted from the virtual machine, killed (signaled), loses contact with the master pvmd, or breaks (e.g., with a bus error). When a pvmd shuts down, it takes two final actions. First, it kills any tasks running under it, with signal SIGTERM. Second, it sends a final shutdown message (Section gif) to every other pvmd in its host table. The other pvmds would eventually discover the missing one by timing out trying to communicate with it, but the shutdown message speeds the process.