Storix Software SBAdmin Backup and Recovery Guide for Xen Enabled Systems - Manual (Page 2)

Storix System Backup Administrator 2 SBAdmin Xen User Guide
Copyright © 2014 Storix, Inc.
Storix is a registered trademark of Storix, Inc in the USA. SBAdmin is a trademark of Storix, Inc in the USA and other countries
SBAdmin and Xen Recovery Guide
The purpose of this guide is to provide the steps necessary to use SBAdmin in a Xen environment and to define what
aspects of system recovery are and are not supported when using SBAdmin in a Xen environment. This guide does
not include all the features and options available with SBAdmin, but is intended to be used as an addendum to the
SBAdmin User Guide .
Full System Backup and System Recovery of dom0
You may perform a full system backup of dom0 that will include all domU systems. However, it is good practice to
either shutdown the domU systems or use the SBAdmin snapshot backup feature to ensure the domU systems are in
a stable state.
Performing a system backup and recovery of dom0 is done much in the same manner as any other Linux system.
Refer to the
SBAdmin Linux System Recovery Guide for additional details. However, the following considerations
deserve mention because they are specific to dom0 systems:
Including domU Systems in dom0 Full System Backup
To include domU systems a system backup you must understand how the systems are configured and stored on
dom0. If the domU is stored within a file on dom0 then you must only assure that the filesystem and file are not
excluded from the backup. If the domU is stored in a raw partition or raw logical volume on dom0, then you
must ensure that the appropriate raw device type is included in the backup. The option to include raw partitions
and/or logical volumes is found in the backup profile. Note that the default is NOT to include raw data in a full
system backup. For more information about backup profiles refer to the SBAdmin User Guide.
Creating Boot Media
In order to perform system recovery you will need SBAdmin boot media. Boot media types supported for
performing recovery of dom0 are CDROM and hard disk. Performing a network boot (PXE) of a dom0 is not
supported. For more information on creating SBAdmin boot media please refer to the
SBAdmin Linux System
Recovery Guide .
Manually Determining Hypervisor
The SBAdmin process to create a full system backup and boot media of dom0 requires knowing the running
Xen hypervisor. Under most circumstances SBAdmin will be able to determine the booted hypervisor file. In
the case that SBAdmin is unable to determine which hypervisor was used at boot time, it will be required that
the user manually specify the file. Note that this file must also be updated if the hypervisor changes.
To manually determine the hypervisor that was used to boot dom0, it will be necessary to know which GRUB
entry was chosen at boot time. You will need to determine the stanza found in the file /boot/grub/menu.lst that
was used to boot the system. Within the stanza there will be a line similar to the following, which identifies the
Xen hypervisor file:
kernel /boot/xen-3.0-i386.gz