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https://issues.apache.org/jira/browse/CLOUDSTACK-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devdeep Singh resolved CLOUDSTACK-3630.
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    Resolution: Invalid

When a data disk is created, user chooses the disk offering to use. She might 
choose either local or shared and the disk is placed on a storage pool 
depending upon the choice. If we allow a local disk to be placed on a shared 
storage pool it'll violate the disk offering with which the disk was created. 
Hence we do not allow a local disk to be placed on a shared pool and vice versa.

Moreover, if there is only one local storage pool on first host, we cannot 
migrate just the volume/disk to another local storage pool on second host as 
the vm is running on the first host. So just migration of a local volume disk 
isn't supported. If you want to migrate a local volume, you'll have to migrate 
the virtual machine as well.
                
> [Storage]No option for migration of local data volume.
> ------------------------------------------------------
>
>                 Key: CLOUDSTACK-3630
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3630
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Storage Controller
>    Affects Versions: 4.2.0
>         Environment: latest 4.2 build
>            Reporter: manasaveloori
>            Assignee: Devdeep Singh
>             Fix For: 4.2.0
>
>         Attachments: storage.jpg
>
>
> Steps:
> 1.    Have a CS with advanced zone with VMware hypervisor..
> 2.    Have 1 local and 1 cluster wide primary storages.
> 3.    Create a Data disk using local primary storage.
> Observed that there is no option to migrate the created local data disk.
> Attached the screen shot for the same.

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