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From "Hiroaki Kawai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-1638) Network plugins won't be notified VM migration.
Date Wed, 13 Mar 2013 06:24:12 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-1638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600883#comment-13600883
] 

Hiroaki Kawai commented on CLOUDSTACK-1638:
-------------------------------------------

Yes. As far as a plugin that handles migration wants to be run on, all the versions of cloudstack
will be affected. I shall update affected versions.
                
> Network plugins won't be notified VM migration.
> -----------------------------------------------
>
>                 Key: CLOUDSTACK-1638
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1638
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.2.0
>            Reporter: Hiroaki Kawai
>            Assignee: Hiroaki Kawai
>              Labels: patch
>
> The location of the virtual machine is provided by DeployDestination, which will be passed
in NetworkGuru#reserve and NetworkElement#prepare.
> During the virtual machine migration, it actually changes DeployDestination and it looks
like that it will tell that event to network components as it has NetworkManager#prepareNicForMigration.
The problem is that althogh the interface has that method, NetworkManagerImpl does not tell
the DeployDestination changes to network components.
> So IMHO, we need to add calls of NetworkGuru#reserve and NetworkElement#prepare in NetworkManagerImpl#prepareNicForMigration
. And then, we also need to add calls NetworkGuru#release and NetworkElement#release after
the migration, otherwise the network resources that plugin reserved will be kept even when
the vm leaves off.

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