6 Domain Live Migration

This Chapter discusses live migration of domains to other, identical computers. You must use identical computers to perform live migrations, that is, the computer make and model number must be identical.

To perform live migration of domains, you must attach the same shared storage at identical mount points to all hosts within the server pool before you can complete the migration. You can use OCFS2- or NFS-based external storage as shared storage, and create a storage repository for this purpose. This Chapter contains:

• Creating Shared Storage

• Migrating a Domain

6.1 Creating Shared Storage

If you want to perform live migration of domains to other, identical, computers, you must create external storage to be used as shared storage during the live migration, then create a storage repository. See Section 8.1, "Preparing External Storage" and Section 8.2, "Preparing a Storage Repository" for information on creating the shared storage and storage repository.

6.2 Migrating a Domain

You can use Oracle VM Manager to migrate a domain. See the Oracle VM Manager User's Guide for information on migrating domains using Oracle VM Manager. Alternatively, you can migrate a domain from the command line on an Oracle VM Server.

To migrate a domain from the Oracle VM Server command line, on the Oracle VM Server that contains the domain, migrate the domain to the remote computer with the following command:

# xm migrate mydomain myremotecomputer

The domain is migrated to the remote computer.

To perform live migration of the domain, use the command:

# xm migrate -l mydomain myremotecomputer