def _mount(self):
if self._config.volume_dir.startswith(('~', '/')):
self._volume_root = os.path.expanduser(self._config.volume_dir)
else:
self._volume_root = os.path.join(self._config.aminator_root,
self._config.volume_dir)
self._mountpoint = os.path.join(self._volume_root,
os.path.basename(self._dev))
if not os.path.exists(self._mountpoint):
os.makedirs(self._mountpoint)
if not mounted(self._mountpoint):
# Handle optional partition
dev = self._dev
if self._blockdevice.partition is not None:
dev = '{0}{1}'.format(dev, self._blockdevice.partition)
mountspec = MountSpec(dev, None, self._mountpoint, None)
result = mount(mountspec)
if not result.success:
msg = 'Unable to mount {0.dev} at {0.mountpoint}: {1}'.format(
mountspec, result.result.std_err)
log.critical(msg)
raise VolumeException(msg)
log.debug(
'Mounted {0.dev} at {0.mountpoint} successfully'.format(mountspec))
def _unmount(self):
if mounted(self._mountpoint):
if busy_mount(self._mountpoint).success:
raise VolumeException('Unable to unmount {0} from {1}'.format(self._dev, self._mountpoint))
result = unmount(self._mountpoint)
if not result.success:
raise VolumeException('Unable to unmount {0} from {1}: {2}'.format(self._dev, self._mountpoint, result.result.std_err))
def _teardown_chroot_mounts(self):
config = self._config.plugins[self.full_name]
for mountdef in reversed(config.chroot_mounts):
dev, fstype, mountpoint, options = mountdef
mountspec = MountSpec(
dev, fstype,
os.path.join(self._mountpoint, mountpoint.lstrip('/')),
options)
log.debug('Attempting to unmount {0}'.format(mountspec))
if not mounted(mountspec.mountpoint):
log.warn('{0} not mounted'.format(mountspec.mountpoint))
continue
result = unmount(mountspec.mountpoint)
if not result.success:
log.error(
'Unable to unmount {0.mountpoint}: {1.stderr}'.format(
mountspec, result))
return False
log.debug('Checking for stray mounts')
for mountpoint in lifo_mounts(self._mountpoint):
log.debug('Stray mount found: {0}, attempting to unmount'.format(
mountpoint))
result = unmount(mountpoint)
if not result.success:
log.error(
'Unable to unmount {0.mountpoint}: {1.stderr}'.format(
mountspec, result))
return False
log.debug('Teardown of chroot mounts succeeded!')
return True
def _unmount(self):
if mounted(self._mountpoint):
if busy_mount(self._mountpoint).success:
raise VolumeException('Unable to unmount {0} from {1}'.format(self._dev, self._mountpoint))
result = unmount(self._mountpoint)
if not result.success:
raise VolumeException('Unable to unmount {0} from {1}: {2}'.format(self._dev, self._mountpoint,
result.result.std_err))
def _mount(self, mountspec):
if not mounted(mountspec):
result = mount(mountspec)
if not result.success:
msg = 'Unable to mount {0.dev} at {0.mountpoint}: {1}'.format(mountspec, result.result.std_err)
log.critical(msg)
return False
log.debug('Device {0.dev} mounted at {0.mountpoint}'.format(mountspec))
return True
def _mount(self, mountspec):
if not mounted(mountspec):
result = mount(mountspec)
if not result.success:
msg = 'Unable to mount {0.dev} at {0.mountpoint}: {1}'.format(
mountspec, result.result.std_err)
log.critical(msg)
return False
log.debug('Device {0.dev} mounted at {0.mountpoint}'.format(mountspec))
return True
def _unmount(self, mountspec):
recursive_unmount = self.plugin_config.get('recursive_unmount', False)
if mounted(mountspec):
result = unmount(mountspec, recursive=recursive_unmount)
if not result.success:
err = 'Failed to unmount {0}: {1}'
err = err.format(mountspec.mountpoint, result.result.std_err)
open_files = busy_mount(mountspec.mountpoint)
if open_files.success:
err = '{0}. Device has open files:\n{1}'.format(err, open_files.result.std_out)
raise VolumeException(err)
log.debug('Unmounted {0.mountpoint}'.format(mountspec))
def _configure_chroot_mounts(self):
config = self._config.plugins[self.full_name]
for mountdef in config.chroot_mounts:
dev, fstype, mountpoint, options = mountdef
mountspec = MountSpec(dev, fstype, os.path.join(self._mountpoint, mountpoint.lstrip('/')), options)
log.debug('Attempting to mount {0}'.format(mountspec))
if not mounted(mountspec.mountpoint):
result = mount(mountspec)
if not result.success:
log.critical('Unable to configure chroot: {0.std_err}'.format(result.result))
return False
log.debug('Mounts configured')
return True
def _unmount(self, mountspec):
recursive_unmount = self.plugin_config.get('recursive_unmount', False)
if mounted(mountspec):
result = unmount(mountspec, recursive=recursive_unmount)
if not result.success:
err = 'Failed to unmount {0}: {1}'
err = err.format(mountspec.mountpoint, result.result.std_err)
open_files = busy_mount(mountspec.mountpoint)
if open_files.success:
err = '{0}. Device has open files:\n{1}'.format(
err, open_files.result.std_out)
raise VolumeException(err)
log.debug('Unmounted {0.mountpoint}'.format(mountspec))
def _mount(self):
if self._config.volume_dir.startswith(('~', '/')):
self._volume_root = os.path.expanduser(self._config.volume_dir)
else:
self._volume_root = os.path.join(self._config.aminator_root, self._config.volume_dir)
self._mountpoint = os.path.join(self._volume_root, os.path.basename(self._dev))
if not os.path.exists(self._mountpoint):
os.makedirs(self._mountpoint)
if not mounted(self._mountpoint):
mountspec = MountSpec(self._dev, None, self._mountpoint, None)
result = mount(mountspec)
if not result.success:
msg = 'Unable to mount {0.dev} at {0.mountpoint}: {1}'.format(mountspec, result.result.std_err)
log.critical(msg)
raise VolumeException(msg)
log.debug('Mounted {0.dev} at {0.mountpoint} successfully'.format(mountspec))
def _teardown_chroot_mounts(self):
config = self._config.plugins[self.full_name]
for mountdef in reversed(config.chroot_mounts):
dev, fstype, mountpoint, options = mountdef
mountspec = MountSpec(dev, fstype, os.path.join(self._mountpoint, mountpoint.lstrip('/')), options)
log.debug('Attempting to unmount {0}'.format(mountspec))
if not mounted(mountspec.mountpoint):
log.warn('{0} not mounted'.format(mountspec.mountpoint))
continue
result = unmount(mountspec.mountpoint)
if not result.success:
log.error('Unable to unmount {0.mountpoint}: {1.stderr}'.format(mountspec, result))
return False
log.debug('Checking for stray mounts')
for mountpoint in lifo_mounts(self._mountpoint):
log.debug('Stray mount found: {0}, attempting to unmount'.format(mountpoint))
result = unmount(mountpoint)
if not result.success:
log.error('Unable to unmount {0.mountpoint}: {1.stderr}'.format(mountspec, result))
return False
log.debug('Teardown of chroot mounts succeeded!')
return True
