145 lines
6.2 KiB
Python
145 lines
6.2 KiB
Python
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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): Chris Lumens <clumens@redhat.com>
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#
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from pykickstart.constants import AUTOPART_TYPE_PLAIN, AUTOPART_TYPE_BTRFS, AUTOPART_TYPE_LVM, \
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AUTOPART_TYPE_LVM_THINP
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class PartSpec(object):
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def __init__(self, mountpoint=None, fstype=None, size=None, max_size=None,
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grow=False, btr=False, lv=False, thin=False, weight=0,
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required_space=0, encrypted=False, schemes=None):
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""" Create a new storage specification. These are used to specify
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the default partitioning layout as an object before we have the
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storage system up and running. The attributes are obvious
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except for the following:
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btr -- Should this be allocated as a btrfs subvolume? If not,
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it will be allocated as a partition.
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lv -- Should this be allocated as a logical volume? If not,
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it will be allocated as a partition.
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thin -- Should this be allocated as a thin logical volume if it is
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being allocated as a logical volume?
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weight -- An integer that modifies the sort algorithm for partition
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requests. A larger value means the partition will end up
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closer to the front of the disk. This is mainly used to
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make sure /boot ends up in front, and any special (PReP,
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appleboot, etc.) partitions end up in front of /boot.
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This value means nothing unless lv and btr are both False.
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required_space -- This value is only taken into account if
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lv=True, and specifies the size in MiB that the
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containing VG must be for this PartSpec to even
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get used. The VG's size is calculated before any
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other LVs are created inside it. If not enough
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space exists, this PartSpec will never get turned
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into an LV.
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encrypted -- Should this request be encrypted? For logical volume
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requests, this is satisfied if the PVs are encrypted
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as in the case of encrypted LVM autopart.
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schemes -- Create the mount point only for specific schemes if any.
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"""
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self.mountpoint = mountpoint
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self.fstype = fstype
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self.size = size
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self.max_size = max_size
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self.grow = grow
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self.lv = lv
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self.btr = btr
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self.thin = thin
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self.weight = weight
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self.required_space = required_space
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self.encrypted = encrypted
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self.schemes = schemes or set()
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# Force str and unicode types in case any of the properties are unicode
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def _to_string(self):
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s = ("%(type)s instance (%(id)s) -- \n"
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" mountpoint = %(mountpoint)s lv = %(lv)s"
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" thin = %(thin)s btrfs = %(btrfs)s\n"
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" weight = %(weight)s fstype = %(fstype)s encrypted = %(enc)s\n"
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" size = %(size)s max_size = %(max_size)s grow = %(grow)s\n"
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" required_space = %(required_space)s\n"
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" schemes = %(schemes)s" %
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{"type": self.__class__.__name__, "id": "%#x" % id(self),
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"mountpoint": self.mountpoint, "lv": self.lv, "btrfs": self.btr,
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"weight": self.weight, "fstype": self.fstype, "size": self.size,
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"enc": self.encrypted, "max_size": self.max_size, "grow": self.grow,
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"thin": self.thin, "required_space": self.required_space,
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"schemes": self.schemes})
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return s
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def is_partition(self, scheme):
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"""Is the specified device a partition in the given scheme?
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:param scheme: a partitioning scheme
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:return: True or False
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"""
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return not self.is_volume(scheme)
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def is_volume(self, scheme):
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"""Is the specified device a volume in the given scheme?
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:param scheme: a partitioning scheme
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:return: True or False
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"""
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if scheme == AUTOPART_TYPE_PLAIN:
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return False
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return self.is_lvm_volume(scheme) or self.is_btrfs_subvolume(scheme)
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def is_lvm_volume(self, scheme):
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"""Is the specified device an LVM volume in the given scheme?
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:param scheme: a partitioning scheme
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:return: True or False
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"""
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return scheme in (AUTOPART_TYPE_LVM, AUTOPART_TYPE_LVM_THINP) and self.lv
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def is_lvm_thin_volume(self, scheme):
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"""Is the specified device an LVM thin volume in the given scheme?
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:param scheme: a partitioning scheme
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:return: True or False
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"""
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if not self.is_lvm_volume(scheme):
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return False
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return scheme == AUTOPART_TYPE_LVM_THINP and self.thin
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def is_btrfs_subvolume(self, scheme):
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"""Is the specified device a Btrfs subvolume in the given scheme?
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:param scheme: a partitioning scheme
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:return: True or False
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"""
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return scheme == AUTOPART_TYPE_BTRFS and self.btr
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def __str__(self):
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return self._to_string()
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def __eq__(self, other):
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return isinstance(other, PartSpec) and vars(self) == vars(other)
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def __repr__(self):
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return str(self)
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