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# lvmpv.py
# Device format classes for anaconda's storage configuration module.
#
# Copyright (C) 2009 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details. You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#
# Red Hat Author(s): Dave Lehman <dlehman@redhat.com>
#
import os
from iutil import log_method_call
from parted import PARTITION_LVM
from ..errors import *
from ..devicelibs import lvm
from . import DeviceFormat, register_device_format
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
import logging
log = logging.getLogger("storage")
class LVMPhysicalVolume(DeviceFormat):
""" An LVM physical volume. """
_type = "lvmpv"
_name = "physical volume (LVM)"
_udevTypes = ["LVM2_member"]
partedFlag = PARTITION_LVM
_formattable = True # can be formatted
_supported = True # is supported
_linuxNative = True # for clearpart
_packages = ["lvm2"] # required packages
def __init__(self, *args, **kwargs):
""" Create an LVMPhysicalVolume instance.
Keyword Arguments:
device -- path to the underlying device
uuid -- this PV's uuid (not the VG uuid)
vgName -- the name of the VG this PV belongs to
vgUuid -- the UUID of the VG this PV belongs to
peStart -- offset of first physical extent
exists -- indicates whether this is an existing format
"""
log_method_call(self, *args, **kwargs)
DeviceFormat.__init__(self, *args, **kwargs)
self.vgName = kwargs.get("vgName")
self.vgUuid = kwargs.get("vgUuid")
# liblvm may be able to tell us this at some point, even
# for not-yet-created devices
self.peStart = kwargs.get("peStart", 0.1875) # in MB
def probe(self):
""" Probe for any missing information about this device. """
log_method_call(self, device=self.device,
type=self.type, status=self.status)
if not self.exists:
raise PhysicalVolumeError("format has not been created")
#info = lvm.pvinfo(self.device)
#self.vgName = info['vg_name']
#self.vgUuid = info['vg_uuid']
def create(self, *args, **kwargs):
""" Create the format. """
log_method_call(self, device=self.device,
type=self.type, status=self.status)
DeviceFormat.create(self, *args, **kwargs)
# Consider use of -Z|--zero
# -f|--force or -y|--yes may be required
# lvm has issues with persistence of metadata, so here comes the
# hammer...
DeviceFormat.destroy(self, *args, **kwargs)
lvm.pvcreate(self.device)
self.exists = True
self.notifyKernel()
def destroy(self, *args, **kwargs):
""" Destroy the format. """
log_method_call(self, device=self.device,
type=self.type, status=self.status)
if not self.exists:
raise PhysicalVolumeError("format has not been created")
if self.status:
raise PhysicalVolumeError("device is active")
# FIXME: verify path exists?
try:
lvm.pvremove(self.device)
except LVMError:
DeviceFormat.destroy(self, *args, **kwargs)
self.exists = False
self.notifyKernel()
@property
def status(self):
# XXX hack
return (self.exists and self.vgName and
os.path.isdir("/dev/mapper/%s" % self.vgName))
def writeKS(self, f):
f.write("pv.%s" % self.uuid)
register_device_format(LVMPhysicalVolume)
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