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