Nova: Xenserver Block Migration support on OpenStack

 Block migration  --- Xenserver必須支援Storage XenMotion的feature才可以使用此功能

Prerequisites 

• Compatible XenServer hypervisors. The hypervisors must support the Storage XenMotion feature. Please refer to the manual of your XenServer to make sure your edition has this feature.

	Note
	Please note, that you need to use an extra option --block-migrate for the live migration command, in order to use block migration.

	Note
	Please note, that block migration works only with EXT local storage SRs, and the server should not have any volumes attached.