tree 9e44243d61ba61533fe5b55174a278c653902293
parent bae615a3e72318861c7e6bd19b154d38a0c38b20
author Bogdan Caprita <caprita@google.com> 1409245484 -0700
committer Bogdan Caprita <caprita@google.com> 1409245490 -0700

veyron/services/mgmt/node/impl: implement Resume and Suspend

Details:

- factor out common code shared between Resume and Start, and between Suspend
  and Stop respectively; break up creating and running a command, and also
  creating an instance from running the instance

- introduce a different way to track the state of the instance; instead of
  renaming the instance dir to "stopped-<>", we now have a status file inside
  each instance dir, whose name reflects the current state of the instance
  ("suspended", "started", "stopped", "starting", "suspending",
  "stopping"). Transition between these states is marked with os.Rename, which
  should be atomic.

- add version link from each instance to the installation version it was created
  from; needed by Resume

Change-Id: I3bc9cc8eada505edebb8117b0bf9313bbe81898d