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# 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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|
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import os |
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|
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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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|
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import gettext |
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_ = lambda x: gettext.ldgettext("anaconda", x) |
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|
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import logging |
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log = logging.getLogger("storage") |
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|
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|
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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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|
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def __init__(self, *args, **kwargs): |
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""" Create an LVMPhysicalVolume instance. |
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|
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Keyword Arguments: |
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|
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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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""" |
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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", 1.0) # in MB |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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if self.status: |
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raise PhysicalVolumeError("device is active") |
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|
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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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|
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self.exists = False |
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self.notifyKernel() |
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|
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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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|
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def writeKS(self, f): |
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f.write("pv.%s" % self.majorminor) |
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|
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register_device_format(LVMPhysicalVolume) |
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|
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