Fix issues with device autoassignment in xenapi

This is a workaround for two issues in xenapi. The first is that
does not set the instance default_root_device to /dev/xvda so it
defaults to /dev/sda. The proper fix for this involves setting the
default_root_device in xenapi and a db migration to set the proper
default_root_device for existing instances.

This patch works around this issue by explicitly setting the prefix
to /dev/xvd if the compute driver is xenapi.

The second issue is that xenapi never updates the instance record
to include default_swap_device and default_ephemeral device. The
fix for this involes adding the appropriate update to the instance
record and a migration that sets the proper values for all existing
instances.

This patch works around this issue by explicily checking the
instance_type and removing the devices from the list if the compute
driver is xenapi.

Fixes bug 1055715 and bug 1055712

Change-Id: I61aa15e69eb0a22430bb22ea5149b1f0735b3328

0 files changed, 0 insertions, 0 deletions