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Chapter 8. Restoring a volume from a geo-replicated backup

  1. Install and configure a replacement Hyperconverged Infrastructure deployment

    For instructions, refer to Deploying Red Hat Hyperconverged Infrastructure: https://access.redhat.com/documentation/en-us/red_hat_hyperconverged_infrastructure/1.0/html/deploying_red_hat_hyperconverged_infrastructure/.

  2. Import the backup of the storage domain

    From the new Hyperconverged Infrastructure deployment, in Red Hat Virtualization Manager:

    1. Click the Storage tab.
    2. Click Import Domain. The Import Pre-Configured Domain window opens.
    3. In the Storage Type field, specify GlusterFS.
    4. In the Name field, specify a name for the new volume that will be created from the backup volume.
    5. In the Path field, specify the path to the backup volume.

    6. Click OK. The following warning appears, with any active data centers listed below: 

      This operation might be unrecoverable and destructive!

Storage Domain(s) are already attached to a Data Center.
Approving this operation might cause data corruption if
both Data Centers are active.
      Copy to Clipboard Toggle word wrap
    7. Check the Approve operation checkbox and click OK.

  3. Determine a list of virtual machines to import

    1. Determine the imported domain’s identifier

      The following command returns the domain identifier. 

      # curl -v -k -X GET -u "admin@internal:password" -H "Accept: application/xml" https://$ENGINE_FQDN/ovirt-engine/api/storagedomains/
      Copy to Clipboard Toggle word wrap

      For example: 

      # curl -v -k -X GET -u "admin@example.com:mybadpassword" -H "Accept: application/xml" https://10.70.37.140/ovirt-engine/api/storagedomains/
      Copy to Clipboard Toggle word wrap

    2. Determine the list of unregistered disks by running the following command: 

      # curl -v -k -X GET -u "admin@internal:password" -H "Accept: application/xml" "https://$ENGINE_FQDN/ovirt-engine/api/storagedomains/DOMAIN_ID/vms;unregistered"
      Copy to Clipboard Toggle word wrap

      For example: 

      # curl -v -k -X GET -u "admin@example.com:mybadpassword" -H "Accept: application/xml" "https://10.70.37.140/ovirt-engine/api/storagedomains/5e1a37cf-933d-424c-8e3d-eb9e40b690a7/vms;unregistered"
      Copy to Clipboard Toggle word wrap

  4. Perform a partial import of each virtual machine to the storage domain

    1. Determine cluster identifier

      The following command returns the cluster identifier. 

      # curl -v -k -X GET -u "admin@internal:password" -H "Accept: application/xml" https://$ENGINE_FQDN/ovirt-engine/api/clusters/
      Copy to Clipboard Toggle word wrap

      For example: 

      # curl -v -k -X GET -u "admin@example:mybadpassword" -H "Accept: application/xml" https://10.70.37.140/ovirt-engine/api/clusters/
      Copy to Clipboard Toggle word wrap

    2. Import the virtual machines

      The following command imports a virtual machine without requiring all disks to be available in the storage domain. 

      # curl -v -k -u 'admin@internal:password' -H "Content-type: application/xml" -d '<action> <cluster id="CLUSTER_ID"></cluster> <allow_partial_import>true</allow_partial_import> </action>' "https://ENGINE_FQDN/ovirt-engine/api/storagedomains/DOMAIN_ID/vms/VM_ID/register"
      Copy to Clipboard Toggle word wrap

      For example: 

      # curl -v -k -u 'admin@example.com:mybadpassword' -H "Content-type: application/xml" -d '<action> <cluster id="bf5a9e9e-5b52-4b0d-aeba-4ee4493f1072"></cluster> <allow_partial_import>true</allow_partial_import> </action>' "https://10.70.37.140/ovirt-engine/api/storagedomains/8d21980a-a50b-45e9-9f32-cd8d2424882e/e164f8c6-769a-4cbd-ac2a-ef322c2c5f30/register"
      Copy to Clipboard Toggle word wrap

      For further information, see the Red Hat Virtualization REST API Guide: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.1/html/rest_api_guide/.

  5. Migrate the partially imported disks to the new storage domain

    On the Disks tab, click on the Move Disk option. Move the imported disks from the synced volume to the replacement cluster’s storage domain. For further information, see the Red Hat Virtualization Administration Guide.

  6. Attach the restored disks to the new virtual machines

    Follow the instructions in the Red Hat Virtualization Virtual Machine Management Guide to attach the replacement disks to each virtual machine.

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