Michal Skrivanek has posted comments on this change.

Change subject: keep pauseCode when migrating paused VM
......................................................................


Patch Set 6:

(1 comment)

http://gerrit.ovirt.org/#/c/27801/6/vdsm/virt/vm.py
File vdsm/virt/vm.py:

Line 1957:             if migrating and self.lastStatus != vmstatus.DOWN:
Line 1958:                 self._waitForIncomingMigrationFinish()
Line 1959: 
Line 1960:             self.lastStatus = vmstatus.UP
Line 1961:             if self._initTimePauseCode:
> I noticed that part of course, it doesn't do anything in case of migration 
I think the current code is broken.
E.g. for the regular Run - we do this in domDependentInit(via _run):

if self.lastStatus not in (vmstatus.MIGRATION_DESTINATION, 
vmstatus.RESTORING_STATE):
<we get here>
            self._initTimePauseCode = self._readPauseCode(0)
<readPauseCode always returns "NOERR">
if not self.recovering and self._initTimePauseCode:
            self.conf['pauseCode'] = self._initTimePauseCode
<i.e. we always set the pauseCode to NOERR>

and now we are removing the pause code in almost all cases.

And it gets even more confusing when you track _initTimePauseCode.
Line 1962:                 self.conf['pauseCode'] = self._initTimePauseCode
Line 1963:                 if self._initTimePauseCode == 'ENOSPC':
Line 1964:                     self.cont()
Line 1965:             elif not migrating:


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Gerrit-MessageType: comment
Gerrit-Change-Id: Iead0697bbebba3f261040221b04cd3745d8ef036
Gerrit-PatchSet: 6
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Arik Hadas <aha...@redhat.com>
Gerrit-Reviewer: Arik Hadas <aha...@redhat.com>
Gerrit-Reviewer: Dan Kenigsberg <dan...@redhat.com>
Gerrit-Reviewer: Francesco Romani <from...@redhat.com>
Gerrit-Reviewer: Michal Skrivanek <michal.skriva...@redhat.com>
Gerrit-Reviewer: Vinzenz Feenstra <vfeen...@redhat.com>
Gerrit-Reviewer: automat...@ovirt.org
Gerrit-Reviewer: oVirt Jenkins CI Server
Gerrit-HasComments: Yes
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