Diagnose your network configuration with the below discussed VDI commands. Make use of these VDI commands to troubleshoot your network configuration and check how to migrate a Xen VDI to another storage repository via the command line.
VDI commands to clone, create, delete, update, import & export
1.CREATE:
If you want to create a VDI with virtual size specified either in KiB, MiB, GiB, and TiB or in bytes using the below command:
vdi-create sr-uuid=uuid_of_sr_to_create_vdi_on name-label=name_for_the_vdi type=system|user|suspend|crashdump virtual-size=size_of_virtual_disk sm-config-\*=storage_specific_configuration_data
2.CLONE
In case, if you wish to clone, you can create a writable new copy of the specified VDI and use it directly.
vdi-clone uuid=uuid_of_the_vdi
You can use the driver:parms to pass extra vendor-specific configuration information to the back-end storage driver.
3.DELETE
To Delete, retain the changed block tracking metadata while, destroying the data associated with the specified VDI and use the command:
vdi-data-destroy uuid=uuid_of_vdi
If you want to destroy the specified VDI, then use:
vdi-destroy uuid=uuid_of_vdi
4.EXPORT & IMPORT
You can Export / Import VDI either in raw or vhd format to a specified file name. All the unallocated blocks within the VDI will be omitted to make your VHD file smaller to transfer.
Command to Export:
vdi-export uuid=uuid_of_vdi filename=filename_to_export_to [format=format] [base=uuid_of_base_vdi] [--progress]
Using base parameter, only the blocks that have changed between the exported VDI and the base VDI will be exported.
Command to Import:
vdi-import uuid=uuid_of_vdi filename=filename_to_import_from [format=format] [--progress]
5.RESIZE
You can resize or change the size of the VDI specified by UUID by using the command:
vdi-resize uuid=vdi_uuid disk-size=new_size_for_disk
Migrate Xen VDI
To Migrate a Xen VDI to another storage repository via command line, then you can follow the below-given steps:
Run xe vm-disk-list vm=$VM , which will display both disks and the storage repositories where these disks are stored in.
You can get these details from sr-name-label
If you want to get a complete list of storage repositories, then run xe sr-list.
By running xe sr-param-list uuid=$SRUUID you can view whether the storage is full or not.
You can migrate VDI that is full to another storage repository using the command:
xe vdi-pool-migrate uuid=$VDI sr-uuid=$NEWSRUUID #prints NEWVDI uuid
Note: Make sure that your VM is running, while you run the above command.
Now you can check whether VDI has been successfully moved or not using the command,
xe vm-disk-list
Hope you found it useful. For any assistance feel free to Contact Us, our experts are ready to assist you.
Check our previous post: Troubleshoot the most common ESXi Booting Issues Now!
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