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Oracle® VM Server for SPARC 3.6 Administration Guide

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Updated: September 2019
 
 

Canceling a Migration in Progress

After a migration starts, the migration operation is terminated if the ldm command is interrupted by a KILL signal. When the migration operation is terminated, the migrated domain is destroyed and the domain to be migrated is resumed if it was active. If the controlling shell of the ldm command is lost, the migration continues in the background.

If you cancel a live migration, the memory contents of the domain instance that is created on the target machine must be “scrubbed” by the hypervisor. This scrubbing process is performed for security reasons and must be complete before the memory can be returned to the pool of free memory. While this scrubbing is in progress, ldm commands become unresponsive. As a result, the Logical Domains Manager appears to be hung. So, wait for the scrubbing request to finish before you attempt to run other ldm commands. This process might take a long time. For example, a guest domain that has 500 Gbytes of memory might complete this process in up to 7 minutes on a SPARC T4 server.