How to use _detach_img_loop method in autotest

Best Python code snippet using autotest_python Github


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...678 Removes the virtual partition from /dev/mapper, detaches the image file679 from the loopback device and removes the image file.680 """681 logging.debug('Removing virtual partition - device %s', self.device)682 self._detach_img_loop()683 self._remove_disk_img()684 def _create_disk_img(self, img_path):685 """686 Creates a disk image using dd.687 @param img_path: Path to the desired image file.688 @param size: Size of the desired image in MB.689 @returns: Path of the image created.690 """691 logging.debug('Creating disk image %s, size = %d MB',692 img_path, self.size)693 try:694 cmd = 'truncate %s --size %dM' % (img_path, self.size)695 except error.CmdError, e:697 e_msg = 'Error creating disk image %s: %s' % (img_path, e)698 raise error.AutotestError(e_msg)699 return img_path700 def _attach_img_loop(self):701 """702 Attaches a file image to a loopback device using losetup.703 @returns: Path of the loopback device associated.704 """705 logging.debug('Attaching image %s to a loop device', self.img)706 try:707 cmd = 'losetup -f'708 loop_path = utils.system_output(cmd)709 cmd = 'losetup -f %s' % self.img710 except error.CmdError, e:712 e_msg = ('Error attaching image %s to a loop device: %s' %713 (self.img, e))714 raise error.AutotestError(e_msg)715 return loop_path716 def _detach_img_loop(self):717 """718 Detaches the image file from the loopback device.719 """720 logging.debug('Detaching image %s from loop device %s', self.img,721 self.loop)722 try:723 cmd = 'losetup -d %s' % self.loop724 except error.CmdError, e:726 e_msg = ('Error detaching image %s from loop device %s: %s' %727 (self.img, self.loop, e))728 raise error.AutotestError(e_msg)729 def _remove_disk_img(self):730 """...

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