Recovering From a Failed Migration

If the network connection is lost after the source has completed sending all the runtime state information to the target, but before the target can acknowledge that the domain has been resumed, the migration operation terminates, and the source is placed in an error state. This indicates that user interaction is required to determine whether or not the migration was completed successfully. In such a situation, take the following steps.

• Determine whether the target domain has resumed successfully. The target domain will be in one of two states:

  • If the migration completed successfully, the target domain is in the normal state.

  • If the migration failed, the target cleans up and destroys the target domain.

• If the target is resumed, it is safe to destroy the source domain in the error state. If the target is not present, the source domain is still the master version of the domain, and it must be recovered. To do this, execute the cancel command on the source machine. This clears the error state and restores the source domain back to its original condition.