nova and cinder may set to different disk backend, e.g. nova use
local disk for image, and cinder use rbd volume_driver. This patch
will add flexibility for user to choose where the vm is booted
from.
Based on boot_runcommand_delete scenario, add new option for volume:
volume_args, which is default to "None". It is a dict option and
'size' parameter is supported now. If volume_args is assigned, this
scenario will create a volume_args['size'] size volume, and boot
from the new volume, finally run "script".
Here is a sample scenario:
"VMTasks.boot_runcommand_delete": [
{
"args": {
"flavor": {
"name": "m1.tiny"
},
"image": {
"name": "cirros"
},
"volume_args": {
"size": 2
},
"script": "./instance_dd_test.sh",
...
Change-Id: I6993c046bcf5a8632b08d46ae380067ffa677f84
e552b21b04