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https://issues.apache.org/jira/browse/CLOUDSTACK-7778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Min Chen reassigned CLOUDSTACK-7778:
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Assignee: Min Chen
> Start VM checkWorkItem loop should also check VM DB state before going into
> idle waiting to exit faster.
> --------------------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-7778
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-7778
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.0.0
> Reporter: Min Chen
> Assignee: Min Chen
> Fix For: 4.5.0
>
>
> During VM deployment, it may involve starting VR. In the meantime, our HA
> process may also try to start the same VR for example due to host disconnect.
> Pre-4.3 release, we didn't serialize these two VR start operations, and tried
> to use VM state transition failure to tell if there is another concurrent
> operation. In case of concurrent operation, we are not fail the VM deployment
> job immediately. Instead, we have retry logic to keep checking op_it_work
> table to see if some other outstanding items have been working on the same
> VR. If there is any issue with some dangling op_it_work item, this retry will
> take more than one hour and then fail even though VR may have already been
> started a while back by HA process. Although due to recent VMsync framework
> change, this concurrent VM operations become less, it is still better to
> check current VM state in the while loop of check op_it_work items to get
> early exit instead of purely relying on op_it_work table being updated
> properly.
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