Current File : //usr/lib/python2.7/site-packages/salt/modules/qemu_img.py
# -*- coding: utf-8 -*-
'''
Qemu-img Command Wrapper
========================
The qemu img command is wrapped for specific functions
:depends: qemu-img
'''
from __future__ import absolute_import, print_function, unicode_literals
# Import python libs
import os
# Import salt libs
import salt.utils.path
def __virtual__():
'''
Only load if qemu-img is installed
'''
if salt.utils.path.which('qemu-img'):
return 'qemu_img'
return (False, 'The qemu_img execution module cannot be loaded: the qemu-img binary is not in the path.')
def make_image(location, size, fmt):
'''
Create a blank virtual machine image file of the specified size in
megabytes. The image can be created in any format supported by qemu
CLI Example:
.. code-block:: bash
salt '*' qemu_img.make_image /tmp/image.qcow 2048 qcow2
salt '*' qemu_img.make_image /tmp/image.raw 10240 raw
'''
if not os.path.isabs(location):
return ''
if not os.path.isdir(os.path.dirname(location)):
return ''
if not __salt__['cmd.retcode'](
'qemu-img create -f {0} {1} {2}M'.format(
fmt,
location,
size),
python_shell=False):
return location
return ''
def convert(orig, dest, fmt):
'''
Convert an existing disk image to another format using qemu-img
CLI Example:
.. code-block:: bash
salt '*' qemu_img.convert /path/to/original.img /path/to/new.img qcow2
'''
cmd = ('qemu-img', 'convert', '-O', fmt, orig, dest)
ret = __salt__['cmd.run_all'](cmd, python_shell=False)
if ret['retcode'] == 0:
return True
else:
return ret['stderr']
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