[GitHub] [cloudstack] ravening commented on pull request #4282: Prevents null pointers when doing consecutive VM migrates

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ravening commented on pull request #4282:
URL: https://github.com/apache/cloudstack/pull/4282#issuecomment-702394123


   > Hi @ravening, that was my fault.
   > 
   > You are doing a live migration, this NPE will occur when you: 
   > 
   > - stop an instance;
   > 
   > - migrate it with volume
   > 
   > - do not start the instance
   > 
   > - try to migrate again to another pool
   > 
   > 
   > 
   > with these steps, after the first migrate `host_id` and `last_host_id` will be set to `null`. And then, when you try to migrate it again a NPE will be thrown.
   
   @RodrigoDLopez ah ok... So you are just doing volume migration of VM...I will try these steps and let you know the result


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