[master 2/2] Delete md.py

cinquecento installerbot-noreply at redhat.com
Tue Jul 28 20:00:39 UTC 2015


From: cinquecento <pomidorabelisima at gmail.com>

---
 devices/md.py | 703 ----------------------------------------------------------
 1 file changed, 703 deletions(-)
 delete mode 100644 devices/md.py

diff --git a/devices/md.py b/devices/md.py
deleted file mode 100644
index 9f2fd5c..0000000
--- a/devices/md.py
+++ /dev/null
@@ -1,703 +0,0 @@
-# devices/md.py
-#
-# Copyright (C) 2009-2014  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): David Lehman <dlehman at redhat.com>
-#
-
-import os
-import six
-
-import gi
-gi.require_version("BlockDev", "1.0")
-
-from gi.repository import BlockDev as blockdev
-
-from ..devicelibs import mdraid, raid
-
-from .. import errors
-from .. import util
-from ..flags import flags
-from ..storage_log import log_method_call
-from .. import udev
-from ..size import Size
-from ..tasks import availability
-from ..util import open # pylint: disable=redefined-builtin
-
-import logging
-log = logging.getLogger("blivet")
-
-from .storage import StorageDevice
-from .container import ContainerDevice
-from .raid import RaidDevice
-
-class MDRaidArrayDevice(ContainerDevice, RaidDevice):
-    """ An mdraid (Linux RAID) device. """
-    _type = "mdarray"
-    _packages = ["mdadm"]
-    _devDir = "/dev/md"
-    _formatClassName = property(lambda s: "mdmember")
-    _formatUUIDAttr = property(lambda s: "mdUuid")
-    _external_dependencies = [availability.BLOCKDEV_MDRAID_PLUGIN]
-
-    def __init__(self, name, level=None, major=None, minor=None, size=None,
-                 memberDevices=None, totalDevices=None,
-                 uuid=None, fmt=None, exists=False, metadataVersion=None,
-                 parents=None, sysfsPath=''):
-        """
-            :param name: the device name (generally a device node's basename)
-            :type name: str
-            :keyword exists: does this device exist?
-            :type exists: bool
-            :keyword size: the device's size
-            :type size: :class:`~.size.Size`
-            :keyword parents: a list of parent devices
-            :type parents: list of :class:`StorageDevice`
-            :keyword fmt: this device's formatting
-            :type fmt: :class:`~.formats.DeviceFormat` or a subclass of it
-            :keyword sysfsPath: sysfs device path
-            :type sysfsPath: str
-            :keyword uuid: the device UUID
-            :type uuid: str
-
-            :keyword level: the device's RAID level
-            :type level: any valid RAID level descriptor
-            :keyword int memberDevices: the number of active member devices
-            :keyword int totalDevices: the total number of member devices
-            :keyword metadataVersion: the version of the device's md metadata
-            :type metadataVersion: str (eg: "0.90")
-            :keyword minor: the device minor (obsolete?)
-            :type minor: int
-
-            .. note::
-
-                An instance of this class whose :attr:`exists` attribute is
-                True and whose parent/member devices are all partitionable is
-                also considered to be partitionable.
-
-            .. note::
-
-                An instance of this class whose :attr:`exists` attribute is
-                True and whose parent/member devices are all disks is also
-                treated like a disk.
-
-        """
-        # pylint: disable=unused-argument
-
-        # These attributes are used by _addParent, so they must be initialized
-        # prior to instantiating the superclass.
-        self._memberDevices = 0     # the number of active (non-spare) members
-        self._totalDevices = 0      # the total number of members
-
-        # avoid attribute-defined-outside-init pylint warning
-        self._level = None
-
-        super(MDRaidArrayDevice, self).__init__(name, uuid=uuid,
-                                                exists=exists, size=size,
-                                                parents=parents,
-                                                sysfsPath=sysfsPath)
-
-        try:
-            self.level = level
-        except errors.DeviceError as e:
-            # Could not set the level, so set loose the parents that were
-            # added in superclass constructor.
-            for dev in self.parents:
-                dev.removeChild()
-            raise e
-
-        self.uuid = uuid
-        self._totalDevices = util.numeric_type(totalDevices)
-        self.memberDevices = util.numeric_type(memberDevices)
-
-        self.chunkSize = mdraid.MD_CHUNK_SIZE
-
-        if not self.exists and not isinstance(metadataVersion, str):
-            self.metadataVersion = "default"
-        else:
-            self.metadataVersion = metadataVersion
-
-        self.format = fmt
-
-        if self.parents and self.parents[0].type == "mdcontainer" and self.type != "mdbiosraidarray":
-            raise errors.DeviceError("A device with mdcontainer member must be mdbiosraidarray.")
-
-        if self.exists and self.mdadmFormatUUID and not flags.testing:
-            # this is a hack to work around mdadm's insistence on giving
-            # really high minors to arrays it has no config entry for
-            with open("/etc/mdadm.conf", "a") as c:
-                c.write("ARRAY %s UUID=%s\n" % (self.path, self.mdadmFormatUUID))
-
-    @property
-    def mdadmFormatUUID(self):
-        """ This array's UUID, formatted for external use.
-
-            :returns: the array's UUID in mdadm format, if available
-            :rtype: str or NoneType
-        """
-        formatted_uuid = None
-
-        if self.uuid is not None:
-            try:
-                formatted_uuid = blockdev.md.get_md_uuid(self.uuid)
-            except blockdev.MDRaidError:
-                pass
-
-        return formatted_uuid
-
-    @property
-    def level(self):
-        """ Return the raid level
-
-            :returns: raid level value
-            :rtype:   an object that represents a RAID level
-        """
-        return self._level
-
-    @property
-    def _levels(self):
-        """ Allowed RAID level for this type of device."""
-        return mdraid.RAID_levels
-
-    @level.setter
-    def level(self, value):
-        """ Set the RAID level and enforce restrictions based on it.
-
-            :param value: new raid level
-            :param type:  object
-            :raises :class:`~.errors.DeviceError`: if value does not describe
-            a valid RAID level
-            :returns:     None
-        """
-        try:
-            level = self._getLevel(value, self._levels)
-        except ValueError as e:
-            raise errors.DeviceError(e)
-
-        self._level = level
-
-    @property
-    def createBitmap(self):
-        """ Whether or not a bitmap should be created on the array.
-
-            If the the array is sufficiently small, a bitmap yields no benefit.
-
-            If the array has no redundancy, a bitmap is just pointless.
-        """
-        try:
-            return self.level.has_redundancy() and self.size >= Size(1000) and  self.format.type != "swap"
-        except errors.RaidError:
-            # If has_redundancy() raises an exception then this device has
-            # a level for which the redundancy question is meaningless. In
-            # that case, creating a write-intent bitmap would be a meaningless
-            # action.
-            return False
-
-    def getSuperBlockSize(self, raw_array_size):
-        """Estimate the superblock size for a member of an array,
-           given the total available memory for this array and raid level.
-
-           :param raw_array_size: total available for this array and level
-           :type raw_array_size: :class:`~.size.Size`
-           :returns: estimated superblock size
-           :rtype: :class:`~.size.Size`
-        """
-        return blockdev.md.get_superblock_size(raw_array_size,
-                                               version=self.metadataVersion)
-
-    @property
-    def size(self):
-        """Returns the actual or estimated size depending on whether or
-           not the array exists.
-        """
-        if not self.exists or not self.mediaPresent:
-            try:
-                size = self.level.get_size([d.size for d in self.members],
-                    self.memberDevices,
-                    self.chunkSize,
-                    self.getSuperBlockSize)
-            except (blockdev.MDRaidError, errors.RaidError) as e:
-                log.info("could not calculate size of device %s for raid level %s: %s", self.name, self.level, e)
-                size = Size(0)
-            log.debug("non-existent RAID %s size == %s", self.level, size)
-        else:
-            size = self.currentSize
-            log.debug("existing RAID %s size == %s", self.level, size)
-
-        return size
-
-    def updateSize(self):
-        # pylint: disable=bad-super-call
-        super(ContainerDevice, self).updateSize()
-
-    @property
-    def description(self):
-        levelstr = self.level.nick if self.level.nick else self.level.name
-        return "MDRAID set (%s)" % levelstr
-
-    def __repr__(self):
-        s = StorageDevice.__repr__(self)
-        s += ("  level = %(level)s  spares = %(spares)s\n"
-              "  members = %(memberDevices)s\n"
-              "  total devices = %(totalDevices)s"
-              "  metadata version = %(metadataVersion)s" %
-              {"level": self.level, "spares": self.spares,
-               "memberDevices": self.memberDevices,
-               "totalDevices": self.totalDevices,
-               "metadataVersion": self.metadataVersion})
-        return s
-
-    @property
-    def dict(self):
-        d = super(MDRaidArrayDevice, self).dict
-        d.update({"level": str(self.level),
-                  "spares": self.spares, "memberDevices": self.memberDevices,
-                  "totalDevices": self.totalDevices,
-                  "metadataVersion": self.metadataVersion})
-        return d
-
-    @property
-    def mdadmConfEntry(self):
-        """ This array's mdadm.conf entry. """
-        uuid = self.mdadmFormatUUID
-        if self.memberDevices is None or not uuid:
-            raise errors.DeviceError("array is not fully defined", self.name)
-
-        fmt = "ARRAY %s level=%s num-devices=%d UUID=%s\n"
-        return fmt % (self.path, self.level, self.memberDevices, uuid)
-
-    @property
-    def totalDevices(self):
-        """ Total number of devices in the array, including spares. """
-        if not self.exists:
-            return self._totalDevices
-        else:
-            return len(self.parents)
-
-    def _getMemberDevices(self):
-        return self._memberDevices
-
-    def _setMemberDevices(self, number):
-        if not isinstance(number, six.integer_types):
-            raise ValueError("memberDevices must be an integer")
-
-        if not self.exists and number > self.totalDevices:
-            raise ValueError("memberDevices cannot be greater than totalDevices")
-        self._memberDevices = number
-
-    memberDevices = property(lambda d: d._getMemberDevices(),
-                             lambda d, m: d._setMemberDevices(m),
-                             doc="number of member devices")
-
-    def _getSpares(self):
-        spares = 0
-        if self.memberDevices is not None:
-            if self.totalDevices is not None and \
-               self.totalDevices > self.memberDevices:
-                spares = self.totalDevices - self.memberDevices
-            elif self.totalDevices is None:
-                spares = self.memberDevices
-                self._totalDevices = self.memberDevices
-        return spares
-
-    def _setSpares(self, spares):
-        max_spares = self.level.get_max_spares(len(self.parents))
-        if spares > max_spares:
-            log.debug("failed to set new spares value %d (max is %d)",
-                      spares, max_spares)
-            raise errors.DeviceError("new spares value is too large")
-
-        if self.totalDevices > spares:
-            self.memberDevices = self.totalDevices - spares
-
-    spares = property(_getSpares, _setSpares)
-
-    def _addParent(self, member):
-        super(MDRaidArrayDevice, self)._addParent(member)
-
-        if self.status and member.format.exists:
-            # we always probe since the device may not be set up when we want
-            # information about it
-            self._size = self.currentSize
-
-        # These should be incremented when adding new member devices except
-        # during devicetree.populate. When detecting existing arrays we will
-        # have gotten these values from udev and will use them to determine
-        # whether we found all of the members, so we shouldn't change them in
-        # that case.
-        if not member.format.exists:
-            self._totalDevices += 1
-            self.memberDevices += 1
-
-        # The new member hasn't been added yet, so account for it explicitly.
-        is_disk = self.isDisk and member.isDisk
-        for p in self.parents:
-            p.format._hidden = is_disk
-
-        member.format._hidden = is_disk
-
-    def _removeParent(self, member):
-        error_msg = self._validateParentRemoval(self.level, member)
-        if error_msg:
-            raise errors.DeviceError(error_msg)
-
-        super(MDRaidArrayDevice, self)._removeParent(member)
-        self.memberDevices -= 1
-
-    @property
-    def _trueStatusStrings(self):
-        """ Strings in state file for which status() should return True."""
-        return ("clean", "active", "active-idle", "readonly", "read-auto")
-
-    @property
-    def status(self):
-        """ This device's status.
-
-            For now, this should return a boolean:
-                True    the device is open and ready for use
-                False   the device is not open
-        """
-        # check the status in sysfs
-        status = False
-        if not self.exists:
-            return status
-
-        if os.path.exists(self.path) and not self.sysfsPath:
-            # the array has been activated from outside of blivet
-            self.updateSysfsPath()
-
-            # make sure the active array is the one we expect
-            info = udev.get_device(self.sysfsPath)
-            uuid = udev.device_get_md_uuid(info)
-            if uuid and uuid != self.uuid:
-                log.warning("md array %s is active, but has UUID %s -- not %s",
-                            self.path, uuid, self.uuid)
-                self.sysfsPath = ""
-                return status
-
-        state_file = "%s/md/array_state" % self.sysfsPath
-        try:
-            state = open(state_file).read().strip()
-            if state in self._trueStatusStrings:
-                status = True
-        except IOError:
-            status = False
-
-        return status
-
-    def memberStatus(self, member):
-        if not (self.status and member.status):
-            return
-
-        member_name = os.path.basename(member.sysfsPath)
-        path = "/sys/%s/md/dev-%s/state" % (self.sysfsPath, member_name)
-        try:
-            state = open(path).read().strip()
-        except IOError:
-            state = None
-
-        return state
-
-    @property
-    def degraded(self):
-        """ Return True if the array is running in degraded mode. """
-        rc = False
-        degraded_file = "%s/md/degraded" % self.sysfsPath
-        if os.access(degraded_file, os.R_OK):
-            val = open(degraded_file).read().strip()
-            if val == "1":
-                rc = True
-
-        return rc
-
-    @property
-    def members(self):
-        """ Returns this array's members.
-
-            :rtype: list of :class:`StorageDevice`
-        """
-        return list(self.parents)
-
-    @property
-    def complete(self):
-        """ An MDRaidArrayDevice is complete if it has at least as many
-            component devices as its count of active devices.
-        """
-        return (self.memberDevices <= len(self.members)) or not self.exists
-
-    def _postSetup(self):
-        super(MDRaidArrayDevice, self)._postSetup()
-        self.updateSysfsPath()
-
-    def _setup(self, orig=False):
-        """ Open, or set up, a device. """
-        log_method_call(self, self.name, orig=orig, status=self.status,
-                        controllable=self.controllable)
-        disks = []
-        for member in self.members:
-            member.setup(orig=orig)
-            disks.append(member.path)
-
-        blockdev.md.activate(self.path, members=disks, uuid=self.mdadmFormatUUID)
-
-    def _postTeardown(self, recursive=False):
-        super(MDRaidArrayDevice, self)._postTeardown(recursive=recursive)
-        # mdadm reuses minors indiscriminantly when there is no mdadm.conf, so
-        # we need to clear the sysfs path now so our status method continues to
-        # give valid results
-        self.sysfsPath = ''
-
-    def teardown(self, recursive=None):
-        """ Close, or tear down, a device. """
-        log_method_call(self, self.name, status=self.status,
-                        controllable=self.controllable)
-        # we don't really care about the return value of _preTeardown here.
-        # see comment just above md_deactivate call
-        self._preTeardown(recursive=recursive)
-
-        if self.isDisk:
-            # treat arrays whose members are disks as partitionable disks
-            return
-
-        # We don't really care what the array's state is. If the device
-        # file exists, we want to deactivate it. mdraid has too many
-        # states.
-        if self.exists and os.path.exists(self.path):
-            blockdev.md.deactivate(self.path)
-
-        self._postTeardown(recursive=recursive)
-
-    def preCommitFixup(self):
-        """ Determine create parameters for this set """
-        log_method_call(self, self.name)
-        # UEFI firmware/bootloader cannot read 1.1 or 1.2 metadata arrays
-        # The EXTLINUX can read 0.9 or 1.0 RAID1 metadata
-        if getattr(self.format, "mountpoint", None) == "/boot/efi" or \
-           getattr(self.format, "mountpoint", None) == "/boot":
-            self.metadataVersion = "1.0"
-
-    def _postCreate(self):
-        # this is critical since our status method requires a valid sysfs path
-        self.exists = True  # this is needed to run updateSysfsPath
-        self.updateSysfsPath()
-        StorageDevice._postCreate(self)
-
-        # update our uuid attribute with the new array's UUID
-        # XXX this won't work for containers since no UUID is reported for them
-        info = blockdev.md.detail(self.path)
-        self.uuid = info.uuid
-        for member in self.members:
-            member.format.mdUuid = self.uuid
-
-    def _create(self):
-        """ Create the device. """
-        log_method_call(self, self.name, status=self.status)
-        disks = [disk.path for disk in self.members]
-        spares = len(self.members) - self.memberDevices
-        level = None
-        if self.level:
-            level = str(self.level)
-        blockdev.md.create(self.path, level, disks, spares,
-                           version=self.metadataVersion,
-                           bitmap=self.createBitmap)
-        udev.settle()
-
-    def _remove(self, member):
-        self.setup()
-        # see if the device must be marked as failed before it can be removed
-        fail = (self.memberStatus(member) == "in_sync")
-        blockdev.md.remove(self.path, member.path, fail)
-
-    def _add(self, member):
-        """ Add a member device to an array.
-
-           :param str member: the member's path
-
-           :raises: blockdev.MDRaidError
-        """
-        self.setup()
-
-        raid_devices = None
-        try:
-            if not self.level.has_redundancy():
-                if self.level is not raid.Linear:
-                    raid_devices = int(blockdev.md.detail(self.name).raid_devices) + 1
-        except errors.RaidError:
-            pass
-
-        blockdev.md.add(self.path, member.path, raid_devs=raid_devices)
-
-    @property
-    def formatArgs(self):
-        formatArgs = []
-        if self.format.type == "ext2":
-            recommended_stride = self.level.get_recommended_stride(self.memberDevices)
-            if recommended_stride:
-                formatArgs = ['-R', 'stride=%d' % recommended_stride ]
-        return formatArgs
-
-    @property
-    def model(self):
-        return self.description
-
-    @property
-    def partitionable(self):
-        return self.exists and self.parents and all(p.partitionable for p in self.members)
-
-    @property
-    def isDisk(self):
-        return self.exists and self.parents and all(p.isDisk for p in self.members)
-
-    def dracutSetupArgs(self):
-        return set(["rd.md.uuid=%s" % self.mdadmFormatUUID])
-
-    def populateKSData(self, data):
-        if self.isDisk:
-            return
-
-        super(MDRaidArrayDevice, self).populateKSData(data)
-        data.level = self.level.name
-        data.spares = self.spares
-        data.members = ["raid.%d" % p.id for p in self.parents]
-        data.preexist = self.exists
-        data.device = self.name
-
-class MDContainerDevice(MDRaidArrayDevice):
-
-    _type = "mdcontainer"
-
-    def __init__(self, name, **kwargs):
-        kwargs['level'] = raid.Container
-        super(MDContainerDevice, self).__init__(name, **kwargs)
-
-    @property
-    def _levels(self):
-        return mdraid.MDRaidLevels(["container"])
-
-    @property
-    def description(self):
-        return "BIOS RAID container"
-
-    @property
-    def mdadmConfEntry(self):
-        uuid = self.mdadmFormatUUID
-        if not uuid:
-            raise errors.DeviceError("array is not fully defined", self.name)
-
-        return "ARRAY %s UUID=%s\n" % (self.path, uuid)
-
-    @property
-    def _trueStatusStrings(self):
-        return ("clean", "active", "active-idle", "readonly", "read-auto", "inactive")
-
-    def teardown(self, recursive=None):
-        log_method_call(self, self.name, status=self.status,
-                        controllable=self.controllable)
-        # we don't really care about the return value of _preTeardown here.
-        # see comment just above md_deactivate call
-        self._preTeardown(recursive=recursive)
-
-        # Since BIOS RAID sets (containers in mdraid terminology) never change
-        # there is no need to stop them and later restart them. Not stopping
-        # (and thus also not starting) them also works around bug 523334
-        return
-
-    @property
-    def mediaPresent(self):
-        # Containers should not get any format handling done
-        # (the device node does not allow read / write calls)
-        return False
-
-class MDBiosRaidArrayDevice(MDRaidArrayDevice):
-
-    _type = "mdbiosraidarray"
-    _formatClassName = property(lambda s: None)
-    _isDisk = True
-    _partitionable = True
-
-    def __init__(self, name, **kwargs):
-        super(MDBiosRaidArrayDevice, self).__init__(name, **kwargs)
-
-        # For container members probe size now, as we cannot determine it
-        # when teared down.
-        self._size = self.currentSize
-
-    @property
-    def size(self):
-        # For container members return probed size, as we cannot determine it
-        # when teared down.
-        return self._size
-
-    @property
-    def description(self):
-        levelstr = self.level.nick if self.level.nick else self.level.name
-        return "BIOS RAID set (%s)" % levelstr
-
-    @property
-    def mdadmConfEntry(self):
-        uuid = self.mdadmFormatUUID
-        if not uuid:
-            raise errors.DeviceError("array is not fully defined", self.name)
-
-        return "ARRAY %s UUID=%s\n" % (self.path, uuid)
-
-    @property
-    def members(self):
-        # If the array is a BIOS RAID array then its unique parent
-        # is a container and its actual member devices are the
-        # container's parents.
-        return self.parents[0].members
-
-    @property
-    def devices(self):
-        return self.parents[0].devices
-
-    @property
-    def totalDevices(self):
-        return self.parents[0].totalDevices
-
-    def _getMemberDevices(self):
-        return self.parents[0].memberDevices
-
-    def _addParent(self, member):
-        # pylint: disable=bad-super-call
-        super(MDRaidArrayDevice, self)._addParent(member)
-
-        if self.status and member.format.exists:
-            # we always probe since the device may not be set up when we want
-            # information about it
-            self._size = self.currentSize
-
-    def _removeParent(self, member):
-        error_msg = self._validateParentRemoval(self.level, member)
-        if error_msg:
-            raise errors.DeviceError(error_msg)
-
-        # pylint: disable=bad-super-call
-        super(MDRaidArrayDevice, self)._removeParent(member)
-
-    def teardown(self, recursive=None):
-        log_method_call(self, self.name, status=self.status,
-                        controllable=self.controllable)
-        # we don't really care about the return value of _preTeardown here.
-        # see comment just above md_deactivate call
-        self._preTeardown(recursive=recursive)
-
-        # Since BIOS RAID sets (containers in mdraid terminology) never change
-        # there is no need to stop them and later restart them. Not stopping
-        # (and thus also not starting) them also works around bug 523334
-        return


-- 
To view this commit on github, visit https://github.com/rhinstaller/blivet/commit/79b2ff5cdc26b995a955968570efda0de67ba9b2


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