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# Storage Management Providers
#
# Copyright (C) 2013-2014 Red Hat, Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# The views and conclusions contained in the software and documentation are
# those of the authors and should not be interpreted as representing official
# policies, either expressed or implied, of the FreeBSD Project.
#
# Authors: Jan Safranek <jsafrane@redhat.com>
#
"""
Logical Volume management.
Usage:
%(cmd)s list [ <vg> ...]
%(cmd)s create <vg> <name> <size>
%(cmd)s delete <lv> ...
%(cmd)s show [ <lv> ...]
Commands:
list List available logical volumes on given volume groups.
If no volume groups are provided, all logical volumes are
listed.
create Create a logical volume on given volume group.
delete Delete given logical volume.
show Show detailed information about given Logical Volumes. If no
Logical Volumes are provided, all of them are displayed.
Options:
vg Name of the volume group, with or without `/dev/` prefix.
size Size of the new logical volume, by default in bytes.
'T', 'G', 'M' or 'K' suffix can be used to use specify other
units (TiB, GiB, MiB and KiB) - '1K' specifies 1 KiB
(= 1024 bytes).
The suffix is case insensitive, i.e. 1g = 1G = 1073741824 bytes.
'E' suffix can be used to specify number of volume group
extents, '100e' means 100 extents.
"""
from lmi.scripts.common import command
from lmi.scripts.storage import lvm, show
from lmi.scripts.storage.common import str2size, size2str, str2device, str2vg
from lmi.scripts.common import formatter
from lmi.scripts.common.formatter import command as fcmd
class Lister(command.LmiLister):
COLUMNS = ('DeviceID', "Name", "ElementName", "Size")
def transform_options(self, options):
"""
Rename 'vg' option to 'vgs' parameter name for better
readability.
"""
options['<vgs>'] = options.pop('<vg>')
def execute(self, ns, vgs=None):
"""
Implementation of 'lv list' command.
"""
for lv in lvm.get_lvs(ns, vgs):
size = size2str(lv.NumberOfBlocks * lv.BlockSize,
self.app.config.human_friendly)
yield (lv.DeviceID,
lv.Name,
lv.ElementName,
size)
class Create(command.LmiCheckResult):
EXPECT = None
def execute(self, ns, vg, name, size):
"""
Implementation of 'lv create' command.
"""
vg = str2vg(ns, vg[0])
lvm.create_lv(ns, vg, name, str2size(size, vg.ExtentSize, 'E'))
class Delete(command.LmiCheckResult):
EXPECT = None
def transform_options(self, options):
"""
Rename 'lv' option to 'lvs' parameter name for better
readability.
"""
options['<lvs>'] = options.pop('<lv>')
def execute(self, ns, lvs):
"""
Implementation of 'lv delete' command.
"""
for lv in lvs:
lvm.delete_lv(ns, lv)
class Show(command.LmiLister):
COLUMNS = ('Name', 'Value')
def transform_options(self, options):
"""
Rename 'lv' option to 'lvs' parameter name for better
readability.
"""
options['<lvs>'] = options.pop('<lv>')
def execute(self, ns, lvs=None):
"""
Implementation of 'lv show' command.
"""
if not lvs:
lvs = lvm.get_lvs(ns)
for lv in lvs:
lv = str2device(ns, lv)
cmd = fcmd.NewTableCommand(title=lv.DeviceID)
yield cmd
for line in show.lv_show(ns, lv, self.app.config.human_friendly):
yield line
Lv = command.register_subcommands(
'Lv', __doc__,
{ 'list' : Lister ,
'create' : Create,
'delete' : Delete,
'show' : Show,
},
)
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