5 2 0:OpenNebula Restore

Welcome to the latest SEP sesam documentation version 5.2.0 Artemis. For previous documentation version(s), check documentation archive.

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Overview

Additional resources

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Check FAQ to find the answers to most common questions.

Problems? See the Troubleshooting Guide.

If you are using an older SEP sesam version, refer to Documentation archive.

SEP sesam provides efficient data protection for virtual machines (VMs) running in OpenNebula environments. By using the SEP Sesam OpenNebula module, you can benefit from online backup and restore of your virtual machines including configuration.

Key features

The restore of OpenNebula VMs is similar to regular file system restore. Note that you can only restore one VM at a time.

SEP sesam also provides a simple and flexible single file restore (SFR) for OpenNebula via the web interface Restore Assistant if you have the appropriate permissions. For more details on SFR, see Single File Restore for Virtual Machines.

Scheduling restore is only supported in GUI mode. For details, see Scheduling Restore.

Restore options

By default, the OpenNebula restore is always performed to the same data store that was used for backup.
You can select an alternative location to restore your data by specifying:

 -a drbd_prefix=/path/to/dbrd

Prerequisites

Before you perform OpenNebula restore, check the following prerequisites:

To successfully restore an OpenNebula backup, all preparation steps must be performed properly. For details, see OpenNebula Backup.
Depending on what you want to restore, make sure that you have the proper restore permissions and access rights. For details, see User Roles and Permissions.
Make sure that there is sufficient free space on the target system to which you are restoring your data; by default, the target data store for restore is the same data store that was used for the backup.
SFR of backups from virtualization platforms requires the guestfs-tools package to be installed on Linux in order to access and mount VM disk image on Linux. If the package is not installed on your SEP sesam Server or Linux RDS, it is not possible to mount VMDK and perform SFR. For details, see Single File Restore and Installing guestfs-tools on Linux.
During restore, it is recommended that you stop all activities on the target.

	Tip
	Watch a short demo on how to configure, backup and restore OpenNebula: Convenient Backup and Restore of OpenNebula.

Restoring an OpenNebula virtual machine

For details on how to configure a restore task and a description of different restore options, see Standard Restore Procedure and Restore Assistant. Only OpenNebula-specific steps and options are described in this section.

	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 access the Restore Assistant in one of the following ways:

via the GUI: by clicking the Restore Assistant icon in the toolbar or from Activities -> Restore Assistant
from SEP sesam Web UI: left menu -> Restore Assistant
or by entering the following address in the browser bar: http://[sesamserver]:11401/sep/ui/restore/.

Note

If you cannot access the web Restore Assistant, check if you have received the appropriate permissions for online restore.
The operations and options available after logging in may differ depending on the user type. Other Web UI display restrictions may depend on the custom roles with specific permissions and the UI mode.
For details, see About Authentication and Authorization and User Roles and Permissions.

Steps

The following steps are performed in simple UI mode. They cover the most common restore cases and are the recommended method for performing a restore. For more experienced users, some additional restore options are available in advanced restore mode. For details, see Standard Restore Procedure.

Open the Restore Assistant in the browser.
In the start window, select OpenNebula and click Next.
In the Virtual Machine window, under Selection of the server, select your target server to which the data will be restored.
Under Selection of the virtual machine select the VM you want to restore and click Next.
In the Task window, under Task selection, select your source backup task.
Under Backup selection, select the exact backup version you want to restore. Note that Generation restore is selected by default. You can use the calendar function in the upper right corner to set a date range for the displayed backups.
Click Next.
In the Target window, under the Target selection select your target OpenNebula server. Note that the target VM will be created under a new name. The name will be known after the restore.
Click Next.
Modify or set additional restore options under the Virtualization restore options:
- Recovery options: Specify whether or not to start the VM after restore.
- Under Target options of the virtual machine select the data store from the drop-down list (by default, the restore is done to the same data store where the data was backed up).
- Under Advanced restore options, you can further refine the restore:
  - Use the Log, Special Options tab to change the log level for your specific restore, see Setting Log Level. You can specify additional commands that may be useful for specific options of the sbc command. For details about the commands, see SBC CLI.
  - Use the Retention, Generation, Pre/Post tab if you want to specify the retention period parameter for the restore (how long (in days) the restore task is kept), enable/disable a generation restore, and specify whether to apply a pre- or post-script to the restore task, see Pre/Post options.
Click Next.
In the last step, check the summary of your restore task (restore type (based on task type, selected backup, its date and details, restore options, etc.) and click Start restore.

Monitoring restore

You can monitor the restore progress using the Web UI (Monitoring -> Restores) or view the status in the GUI (Main Selection -> Job State -> Restores). The restore overview provides detailed information on the last run of restore jobs, including task name, status (successful, error, in queue...), start and stop time of the last backup, data size, throughput, etc. For details, see SEP sesam Web UI.