Installation guide

Appendix B. Maintenance Procedures

This chapter documents some miscellaneous procedures for maintaining XenServer Hosts.

B.1. Preparing XenServer Hosts for maintenance operations

Before performing maintenance operations on a XenServer Host that is part of a resource pool,

you should disable it (which prevents any VMs from being started on it), then migrate its VMs

to another XenServer Host in the pool. This can most readily be accomplished by placing the

XenServer Host into Maintenance Mode using XenCenter. See the XenCenter Help for details.

Procedure B.1. To prepare a XenServer Host in a pool for maintenance

operations via the CLI

1. Use the command

xe host-evacuate uuid=<UUUID of XenServer Host>

This will disable the XenServer Host and then migrate any running VMs to other XenServer

Hosts in the pool.

2. Perform the desired maintenance operation.

3. Once the maintenance operation is completed, enable the XenServer Host:

xe host-enable

then restart any halted VMs and/or resume any suspended VMs.

Before performing maintenance operations on a XenServer Host that is not part of a resource

pool, you should disable it (which prevents any VMs from being started on it), then either shut-

down or suspend its VMs.

Procedure B.2. To prepare an unpooled XenServer Host for maintenance

operations via the CLI

1. Disable the XenServer Host:

xe host-disable

2. Shut down or suspend any running VMs using the xe vm-shutdown or xe vm-suspend

commands.

3. Perform the desired maintenance operation.

4. Once the maintenance operation is completed, enable the XenServer Host: