def _setup_vol_groups(self):
LOG.info("Attempting to setup volume groups for nova volume management.")
mp = dict()
backing_file = self.cfg.get('nova', 'volume_backing_file')
# check if we need to have a default backing file
if not backing_file:
backing_file = sh.joinpths(self.appdir, 'nova-volumes-backing-file')
vol_group = self.cfg.get('nova', 'volume_group')
backing_file_size = utils.to_bytes(self.cfg.get('nova', 'volume_backing_file_size'))
mp['VOLUME_GROUP'] = vol_group
mp['VOLUME_BACKING_FILE'] = backing_file
mp['VOLUME_BACKING_FILE_SIZE'] = backing_file_size
try:
utils.execute_template(*VG_CHECK_CMD, params=mp)
LOG.warn("Volume group already exists: %s" % (vol_group))
except exceptions.ProcessExecutionError as err:
# Check that the error from VG_CHECK is an expected error
if err.exit_code != 5:
raise
LOG.info("Need to create volume group: %s" % (vol_group))
sh.touch_file(backing_file, die_if_there=False, file_size=backing_file_size)
vg_dev_result = utils.execute_template(*VG_DEV_CMD, params=mp)
if vg_dev_result and vg_dev_result[0]:
LOG.debug("VG dev result: %s" % (vg_dev_result))
# Strip the newlines out of the stdout (which is in the first
# element of the first (and only) tuple in the response
(sysout, _) = vg_dev_result[0]
mp['DEV'] = sysout.replace('\n', '')
utils.execute_template(*VG_CREATE_CMD, params=mp)
# One way or another, we should have the volume group, Now check the
# logical volumes
self._process_lvs(mp)
# Finish off by restarting tgt, and ignore any errors
utils.execute_template(*RESTART_TGT_CMD, check_exit_code=False)
def _create_data_location(self):
loop_size = self.cfg.get('swift', 'loopback_disk_size')
if not loop_size:
loop_size = DEF_LOOP_SIZE
else:
loop_size = utils.to_bytes(loop_size)
sh.create_loopback_file(fname=self.fs_image,
size=loop_size,
fs_type=FS_TYPE)
self.tracewriter.file_touched(self.fs_image)
sh.mount_loopback_file(self.fs_image, self.fs_dev, FS_TYPE)
sh.chown_r(self.fs_dev, sh.geteuid(), sh.getegid())
def _create_data_location(self):
loop_size = self.cfg.get('swift', 'loopback_disk_size')
if not loop_size:
loop_size = DEF_LOOP_SIZE
else:
loop_size = utils.to_bytes(loop_size)
sh.create_loopback_file(fname=self.fs_image,
size=loop_size,
fs_type=FS_TYPE)
self.tracewriter.file_touched(self.fs_image)
sh.mount_loopback_file(self.fs_image, self.fs_dev, FS_TYPE)
sh.chown_r(self.fs_dev, sh.geteuid(), sh.getegid())
def _setup_vol_groups(self):
LOG.info(
"Attempting to setup volume groups for nova volume management.")
mp = dict()
backing_file = self.cfg.getdefaulted(
'nova', 'volume_backing_file',
sh.joinpths(self.app_dir, 'nova-volumes-backing-file'))
vol_group = self.cfg.getdefaulted('nova', 'volume_group',
'nova-volumes')
backing_file_size = utils.to_bytes(
self.cfg.getdefaulted('nova', 'volume_backing_file_size', '2052M'))
mp['VOLUME_GROUP'] = vol_group
mp['VOLUME_BACKING_FILE'] = backing_file
mp['VOLUME_BACKING_FILE_SIZE'] = backing_file_size
try:
utils.execute_template(*VG_CHECK_CMD, params=mp)
LOG.warn("Volume group already exists: %r" % (vol_group))
except exceptions.ProcessExecutionError as err:
# Check that the error from VG_CHECK is an expected error
if err.exit_code != 5:
raise
LOG.info("Need to create volume group: %r" % (vol_group))
sh.touch_file(backing_file,
die_if_there=False,
file_size=backing_file_size)
vg_dev_result = utils.execute_template(*VG_DEV_CMD, params=mp)
if vg_dev_result and vg_dev_result[0]:
LOG.debug("VG dev result: %s" % (vg_dev_result))
# Strip the newlines out of the stdout (which is in the first
# element of the first (and only) tuple in the response
(sysout, _) = vg_dev_result[0]
mp['DEV'] = sysout.replace('\n', '')
utils.execute_template(*VG_CREATE_CMD, params=mp)
# One way or another, we should have the volume group, Now check the
# logical volumes
self._process_lvs(mp)
# Finish off by restarting tgt, and ignore any errors
cmdrestart = self.distro.get_command('iscsi', 'restart', quiet=True)
if cmdrestart:
sh.execute(*cmdrestart, run_as_root=True, check_exit_code=False)
