Francesco Romani has posted comments on this change.

Change subject: vm: introduce a `monitorable' attribute
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Patch Set 10: Verified+1

The purpose of this patch is
1. make sure VM is not misreported (actually: overzelously reported) 
unresponsive when starting up slowly or shutting down sloly
2. reduce misleading "XXX operation cannot run on ABC" messages

ot check this, I verified again that both of the above doesn't happen if a VM 
starts up or shuts down slowly. Overloading one host is racy and tricky, so I 
tried reproducing in a more controlled environment, using just one VM, but 
injecting sleep()s to ensure the right sequence or events - or just slow 
operations.

- startup: slow down domDependentInit right at the beginning. VM is still 
reported as responsive even if sleeps for 100s. No extra messages in the logs
- shutdown: started one VM, stopped Engine, killed QEMU. Did a few tries to 
catch the small race here (a Down VM doesn't report responsiveness), looks ok 
as well.
- non regression: SIGSTOP'd QEMU while Vdsm was running, VM is reported 
unresponsive after a timeout, and responsive again when QEMU is SIGCONT'd.

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Gerrit-MessageType: comment
Gerrit-Change-Id: Idb12277a5f0fdaf680032af12fa7c104c3bd6ffb
Gerrit-PatchSet: 10
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Francesco Romani <[email protected]>
Gerrit-Reviewer: Dan Kenigsberg <[email protected]>
Gerrit-Reviewer: Francesco Romani <[email protected]>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Martin Polednik <[email protected]>
Gerrit-Reviewer: Michal Skrivanek <[email protected]>
Gerrit-Reviewer: Milan Zamazal <[email protected]>
Gerrit-Reviewer: gerrit-hooks <[email protected]>
Gerrit-HasComments: No
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