4 4 3 Beefalo:RHV Restore

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Docs latest icon.png Welcome to the latest SEP sesam documentation version 4.4.3/4.4.3 Tigon. For previous documentation version(s), check RHEV archive.


Overview

SEP sesam backup solution for RHEV environments was developed together with Red Hat. SEP sesam uses components of the libvirt API to perform snapshot-based backups of virtual machines (VMs) in RHEV and provide consistent, agentless backups and restores of all Red Hat Enterprise Virtualization virtual machines, regardless of their workload or operating system. For details on how to configure a RHEV client and prepare it for backup, see RHEV Requirements and Configuration and RHEV Backup.

Restore options

  • You can restore your VM to the original or different locations with the same or a different VM name using relocation.
  • You can restore your VM to the same or a different single RHEV server as well as to the same or a different RHEV cluster.
  • You can perform a simple path restore of your selected RHEV virtual machine configuration directly to a directory on any system rather than restoring and importing VM to the RHEV environment.

Restore workflow

The restore process uses the following workflow:

  • Virtual machine (VM) configuration is restored to the data mover virtual machine.
  • Target VM is created based on the configuration.
  • Target VM disks are created on the target storage domain.
  • Provisioned disks are attached to the data mover VM.
  • Data of the disks is restored.
  • Disks are re-attached from the data mover VM to the target VM.

Prerequisites

To ensure error-free operation of SEP sesam and improve performance, make sure that the following conditions are met:

Information sign.png Note
During restore the virtual disk will consume complete thick provisioned space on the target storage! For example, if you have backed up a 1 TB VM disk, 1 TB must be free on the target pool where the VM is restored.

Restoring RHEV virtual machines

Create a new restore task for the RHEV Manager client. You can only restore one VM at a time.

  1. From the SEP sesam GUI menu bar, select Activities -> Restore. The New restore task window opens.
  2. Select the RHEV backup task you want to restore.
  3. Rhev restore1.jpg
  4. Select the RHEV backup save set you want to restore.
  5. Rhev restore2.jpg
  6. Select the target virtual machine name you want to restore the virtual machine to.
  7. Rhev restore3.jpg
  8. Optionally, if the virtual machine should be restored with a different name, select the option New restore target and enter a different virtual machine name.
  9. As of v. 4.4.3 Tigon, you can use the dd utility to create a thin-provisioned (sparse) disk file, thus restoring only the actual size of the VMs: Click the Expert Options button and enter the following under the Restore Options: -a use_dd
  10. RHV restore-expert options.png
  11. If you want to start your VM restore immediately, click Start. If you want to save the restore task, click Save.
Information sign.png Note
A restore task can be scheduled like any other task. If you want to add a restore task to the schedule, see Scheduling Restore.

You can view the status of your restore jobs by selecting Job state -> Restore from the Main selection. Restore overview provides detailed information on the last run of restore jobs, including the task name, status (successful, error, in queue ...), start and stop time of the last backup, data size, throughput, client and message.

Known issues

For troubleshooting Red Hat Enterprise Linux issues, see Troubleshooting Red Hat Enterprise Linux.

See also

RHEV Requirements and ConfigurationRHEV Backup