User Manual

Storix System Back up Administrat or 2 Citrix XenServ er Recover y Guide

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Citrix XenServer Recovery Guide

The purpose of this document is to provide the steps necessary to perform system recovery when using Citrix

XenServer and to define the aspects of system recovery that are and are not supported. 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 a nd the SBAdmin Linux System Recovery Guide.

SBAdmin provides support for Citrix XenServer vers ions 5. 6 and 6.0.

System Backup and Restore of Citrix XenServer (dom0)

Citrix XenServer is based on Xen virtualization technology. Therefore, you will see the server referred to as

dom0 in this an d other doc uments. Th e virtu alized guest machines that run on t he ser ver are r eferre d to as

domU systems.

Performin g a system backup of the C itrix XenServ er(dom0) is done much in the same manner as any other

Linux system. Refer to the SBAdmin User Guide for additional details. However, the following considerations

deserve me ntion beca use th ey are s pecific to Citrix Xe nServ er dom0 s ystems:

Including domU Systems in dom0 Full System Backup

You may p erform a f ull s ystem backu p of th e Citrix XenServer (dom0) t hat will inclu de all v irtual ized (d omU)

systems. However, it is good pract ice to either shutd own the domU systems or use th e SBAdmin sn apsho t

backup feature on the logical volumes t hat stor e the d omU im ages. This will ens ure the d omU s ystems are

in a stable st ate at the time o f the backup.

To include the domU systems in a system backup, it is necessary to understand how the domU systems are

stored on dom 0. When the domU is cr eated, a logical v olume will be cr eated on the dom0. Whi le the domU

is running this logical volume will be available to the dom0. However, the dom0 never mounts any file

systems for t he domU. T o includ e the data for t he dom U it is nec essar y to ensure t hat ra w logic al volumes

are inclu ded in the backup. This opt ion is co nfigur ed in the p rofile, note t he optio n to incl ude ra w logical

volumes is NOT configured by default.

To include domU s ystems t hat are n ot runnin g at the t ime of t he bac kup, it m ay be n ecessar y to act ivate

the logical v olumes t hat cont ain dom U data. T o determi ne the logical v olume o n the dom0 a ssociat ed with

the data for the domU. Use the “xe vm-disk-list” command. The output will be similar to the following.

# xe vm-disk-lis t

Disk 0 VDI:

uuid ( RO) : 477479e2-e5 b5-4e3e-bf 99-ad82e5263 c67

name-label ( RW) : Red Ha t Enterprise Linux 6 ( 64-bit) (exp erimental ) (1) 0

sr-name-label ( RO): Loc al storage

virtual-size ( R O): 8589 934592