ACRONIS Backup & Recovery 10 Advanced Server Virtual Edition User's Guide download pdf (Page 48)

You can back up data of one or more logical volumes and recover it to a previously created logical

volume or a basic (MBR) disk or volume; likewise, it is also possible to recover the data of a basic

volume to a logical volume. In each case, the program stores and recovers volume contents only. The

type or other properties of the target volume will not change.

A system, recovered from a logical volume backup to a basic MBR disk, cannot boot because its kernel tries to

mount the root file system at the logical volume. To boot the system, change the loader configuration and

/etc/fstab so that LVM is not used and reactivate your boot loader as described in the Bootability

troubleshooting (p. 246) section.

When recovering a logical volume over a basic MBR volume, you can resize the resulting volume.

Before recovering logical volumes to a target machine with no corresponding logical volume structure

(for example, to recover to bare metal), you need to create the logical volumes and groups in either

of these ways:

• Before performing the first disk backup on a source machine, run the following command:

trueimagecmd --dumpraidinfo

This will save the machine's logical volume structure to the /etc/Acronis directory. Include the

volume with this directory to the list of volumes to back up.

Before the recovery, use the restoreraids.sh script in bootable media to create the structure.

• Alternatively, use the lvm utility to create the structure manually, and then perform the recovery.

You can perform this procedure either in Linux or in bootable media.

For detailed instructions on how to recover logical volumes, see Recovering MD devices and logical

volumes (p. 282).

You do not need to create the volume structure if it already exists on the machine (such is the case

when some data on the volume was lost, but no hard disks were replaced).

How to select logical volumes to back up

Logical volumes appear at the end of the list of volumes available for backup. Basic volumes included

in logical volumes are also shown in the list with None in the Type column. If you select to back up

such partitions, the program will image it sector-by-sector. Normally it is not required. To back up all

available disks, specify all logical volumes plus basic volumes not belonging to them.

A logical volume is a GPT (GUID partition table) partition. Logical volumes are displayed under

Dynamic & GPT Volumes.

Here is an example of a volumes list obtained with the command:

trueimagecmd --list

The GUI displays a similar table.

Num Partition Flags Start Size Type

_________________________________________________________________

Disk 1:

1-1 hda1 (/boot) Pri,Act 63 208782 Ext3

1-2 hda2 Pri 208845 8177085 None

Disk 2:

2-1 hdb1 Pri,Act 63 8385867 None

Disk 3:

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 409 410

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ACRONIS Backup & Recovery 10 Advanced Server Virtual Edition User's Guide Page 48