bootstrap-vz/common/fs/loopbackvolume.py
Anders Ingemann 8165297a02 Generalize link_dm_node() it works for all devices
Also accept some new parameters to adjust offsets and startsecotrs when creating the disk mapping
2014-01-18 16:36:41 +01:00

28 lines
794 B
Python

from base.fs.volume import Volume
from common.tools import log_check_call
class LoopbackVolume(Volume):
extension = 'raw'
def create(self, image_path):
self.fsm.create(image_path=image_path)
def _before_create(self, e):
self.image_path = e.image_path
log_check_call(['/usr/bin/qemu-img', 'create', '-f', 'raw', self.image_path, str(self.size) + 'M'])
def _before_attach(self, e):
[self.loop_device_path] = log_check_call(['/sbin/losetup', '--show', '--find', self.image_path])
self.device_path = self.loop_device_path
def _before_detach(self, e):
log_check_call(['/sbin/losetup', '--detach', self.loop_device_path])
del self.loop_device_path
del self.device_path
def _before_delete(self, e):
from os import remove
remove(self.image_path)
del self.image_path