def __init__(self, vg_name, root_helper, create_vg=False,
physical_volumes=None, lvm_type='default',
executor=putils.execute):
"""Initialize the LVM object.
The LVM object is based on an LVM VolumeGroup, one instantiation
for each VolumeGroup you have/use.
:param vg_name: Name of existing VG or VG to create
:param root_helper: Execution root_helper method to use
:param create_vg: Indicates the VG doesn't exist
and we want to create it
:param physical_volumes: List of PVs to build VG on
:param lvm_type: VG and Volume type (default, or thin)
:param executor: Execute method to use, None uses common/processutils
"""
super(LVM, self).__init__(execute=executor, root_helper=root_helper)
self.vg_name = vg_name
self.pv_list = []
self.lv_list = []
self.vg_size = 0.0
self.vg_free_space = 0.0
self.vg_lv_count = 0
self.vg_uuid = None
self.vg_thin_pool = None
self.vg_thin_pool_size = 0.0
self.vg_thin_pool_free_space = 0.0
self._supports_snapshot_lv_activation = None
self._supports_lvchange_ignoreskipactivation = None
if create_vg and physical_volumes is not None:
self.pv_list = physical_volumes
try:
self._create_vg(physical_volumes)
except putils.ProcessExecutionError as err:
LOG.exception(_('Error creating Volume Group'))
LOG.error(_('Cmd :%s') % err.cmd)
LOG.error(_('StdOut :%s') % err.stdout)
LOG.error(_('StdErr :%s') % err.stderr)
raise exception.VolumeGroupCreationFailed(vg_name=self.vg_name)
if self._vg_exists() is False:
LOG.error(_('Unable to locate Volume Group %s') % vg_name)
raise exception.VolumeGroupNotFound(vg_name=vg_name)
# NOTE: we assume that the VG has been activated outside of Cinder
if lvm_type == 'thin':
pool_name = "%s-pool" % self.vg_name
if self.get_volume(pool_name) is None:
self.create_thin_pool(pool_name)
else:
self.vg_thin_pool = pool_name
self.activate_lv(self.vg_thin_pool)
self.pv_list = self.get_all_physical_volumes(root_helper, vg_name)
def __init__(self,
vg_name,
root_helper,
create_vg=False,
physical_volumes=None,
lvm_type='default',
executor=putils.execute,
lvm_conf=None):
"""Initialize the LVM object.
The LVM object is based on an LVM VolumeGroup, one instantiation
for each VolumeGroup you have/use.
:param vg_name: Name of existing VG or VG to create
:param root_helper: Execution root_helper method to use
:param create_vg: Indicates the VG doesn't exist
and we want to create it
:param physical_volumes: List of PVs to build VG on
:param lvm_type: VG and Volume type (default, or thin)
:param executor: Execute method to use, None uses common/processutils
"""
super(LVM, self).__init__(execute=executor, root_helper=root_helper)
self.vg_name = vg_name
self.pv_list = []
self.vg_size = 0.0
self.vg_free_space = 0.0
self.vg_lv_count = 0
self.vg_uuid = None
self.vg_thin_pool = None
self.vg_thin_pool_size = 0.0
self.vg_thin_pool_free_space = 0.0
self._supports_snapshot_lv_activation = None
self._supports_lvchange_ignoreskipactivation = None
self.vg_provisioned_capacity = 0.0
if create_vg and physical_volumes is not None:
self.pv_list = physical_volumes
LOG.debug('[MRA] vgname: %(vgname)s, phydev: %(phydev)s' % {
'vgname': self.vg_name,
'phydev': physical_volumes
})
try:
self._create_vg(physical_volumes)
except putils.ProcessExecutionError as err:
# [MRA] this is a hack. should be removed and processed more elegantly later.
if 'already exists' in str(err.stderr):
LOG.debug('[MRA] vg [%s] already exists.' % self.vg_name)
pass
else:
LOG.exception(_LE('Error creating Volume Group'))
LOG.error(_LE('Cmd :%s') % err.cmd)
LOG.error(_LE('StdOut :%s') % err.stdout)
LOG.error(_LE('StdErr :%s') % err.stderr)
raise exception.VolumeGroupCreationFailed(
vg_name=self.vg_name)
if self._vg_exists() is False:
LOG.error(_LE('Unable to locate Volume Group %s') % vg_name)
raise exception.VolumeGroupNotFound(vg_name=vg_name)
# NOTE: we assume that the VG has been activated outside of Cinder
if lvm_type == 'thin':
pool_name = "%s-pool" % self.vg_name
if self.get_volume(pool_name) is None:
try:
self.create_thin_pool(pool_name)
except putils.ProcessExecutionError:
# Maybe we just lost the race against another copy of
# this driver being in init in parallel - e.g.
# cinder-volume and cinder-backup starting in parallel
if self.get_volume(pool_name) is None:
raise
self.vg_thin_pool = pool_name
self.activate_lv(self.vg_thin_pool)
self.pv_list = self.get_all_physical_volumes(root_helper, vg_name)
if lvm_conf and os.path.isfile(lvm_conf):
LVM.LVM_CMD_PREFIX = [
'env', 'LC_ALL=C', 'LVM_SYSTEM_DIR=/etc/cinder'
]