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# Storage Management Providers
#
# Copyright (c) 2013, 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 Synacek <jsynacek@redhat.com>
#
"""
Mount management.
Usage:
%(cmd)s list [ --all ] [ <device> ... ]
%(cmd)s create <device> <mountpoint> [ (-t <fs_type>) (-o <options>) (-p <other_options>) ]
%(cmd)s delete <target>
%(cmd)s show [ --all ] [ <device> ... ]
Commands:
list List mounted filesystems with a device attached to them.
Optionally, show all mounted filesystems.
create Mount a specified device on the path given by mountpoint.
Optionally, filesystem type, common options (filesystem
independent) and filesystem specific options can be provided. If no
filesystem type is specified, it is automatically detected.
Common options can be provided as a comma-separated string of
'option_name:value' items. Possible option names are:
AllowExecution AllowMandatoryLock AllowSUID AllowUserMount
AllowWrite Auto Dump FileSystemCheckOrder InterpretDevices
OtherOptions Silent SynchronousDirectoryUpdates SynchronousIO
UpdateAccessTimes UpdateDirectoryAccessTimes UpdateFullAccessTimes
UpdateRelativeAccessTimes
Possible option values for all of the options except for
FileSystemCheckOrder are 't', 'true', 'f', 'false'. All of them are
case insensitive.
The FileSystemCheckOrder option's value is a number.
Other options can be specified as a string.
Examples:
create /dev/vda1 /mnt -t ext4 -o 'AllowWrite:F,InterpretDevices:false'
create /dev/vda2 /mnt -o 'FileSystemCheckOrder:2'
create /dev/vda3 /mnt -p 'user_xattr,barrier=0'
create /dev/vda4 /mnt -o 'Dump:t, AllowMandatoryLock:t' -p 'acl'
delete Unmount a mounted filesystem. Can be specified either as a device
path or a mountpoint.
show Show detailed information about mounted filesystems with a device
attached to them. Optionally, show all mounted filesystems.
"""
from lmi.scripts.common import command, get_logger
from lmi.scripts.common.errors import LmiFailed
from lmi.scripts.common.formatter import command as fcmd
from lmi.scripts.storage import mount
from lmi.scripts.storage.common import str2device
def get_mounts_for_devices(ns, devices):
"""
Return list of LMI_MountedFilesystem instances for given devices.
"""
mounts = []
for device in devices:
device = str2device(ns, device)
filesystems = device.associators(AssocClass="LMI_ResidesOnExtent",
Role="Antecedent")
for fs in filesystems:
mounts += fs.associators(ResultClass="LMI_MountedFileSystem")
return mounts
class Lister(command.LmiLister):
COLUMNS = ('FileSystemSpec', 'FileSystemType', 'MountPointPath', 'Options', 'OtherOptions')
OPT_NO_UNDERSCORES = True
def transform_options(self, options):
"""
Rename 'device' option to 'devices' parameter name for better
readability.
"""
options['<devices>'] = options.pop('<device>')
def execute(self, ns, all=None, devices=None):
"""
Implementation of 'mount list' command.
"""
if devices:
mounts = get_mounts_for_devices(ns, devices)
else:
mounts = mount.get_mounts(ns)
if all is False:
transients = [mnt.Name for mnt in ns.LMI_TransientFileSystem.instances()]
for mnt in mounts:
# treat root specially (can be mounted twice - as a rootfs and with
# a device)
if mnt.FileSystemSpec == 'rootfs':
continue
if all is False and mnt.MountPointPath != '/':
# do not list nodevice filesystems
name = 'PATH=' + mnt.MountPointPath
if name in transients:
continue
opts_str = mount.build_opts_str(mnt)
yield(mnt.FileSystemSpec,
mnt.FileSystemType,
mnt.MountPointPath,
opts_str[0],
opts_str[1])
class Show(command.LmiLister):
COLUMNS = ('Name', 'Value')
OPT_NO_UNDERSCORES = True
def transform_options(self, options):
"""
Rename 'device' option to 'devices' parameter name for better
readability.
"""
options['<devices>'] = options.pop('<device>')
def execute(self, ns, all=None, devices=None):
"""
Implementation of 'mount show' command.
"""
if devices:
mounts = get_mounts_for_devices(ns, devices)
else:
mounts = mount.get_mounts(ns)
if all is False:
transients = [mnt.Name for mnt in ns.LMI_TransientFileSystem.instances()]
yield fcmd.NewTableCommand('Mounted filesystems')
for mnt in mounts:
# treat root specially (can be mounted twice - as a rootfs and with
# a device)
if mnt.FileSystemSpec == 'rootfs':
continue
if all is False and mnt.MountPointPath != '/':
# do not list nodevice filesystems
name = 'PATH=' + mnt.MountPointPath
if name in transients:
continue
opts_str = mount.build_opts_str(mnt)
yield('Filesystem', '%s (%s)' % (mnt.FileSystemSpec, mnt.FileSystemType))
yield('Mountpoint', mnt.MountPointPath)
yield('Options', opts_str[0])
yield('OtherOptions', opts_str[1])
yield ''
class Create(command.LmiCheckResult):
EXPECT = None
def transform_options(self, options):
"""
There is only one <device> option, but docopt passes it as array
(because in other commands it is used with '...'). So let's
transform it to scalar.
"""
options['<device>'] = options.pop('<device>')[0]
def execute(self, ns, device, mountpoint, fs_type=None, options=None, other_options=None):
"""
Implementation of 'mount create' command.
"""
return mount.mount_create(ns, device, mountpoint, fs_type, options, other_options)
class Delete(command.LmiCheckResult):
EXPECT = None
def transform_options(self, options):
"""
There is only one <device> option, but docopt passes it as array
(because in other commands it is used with '...'). So let's
transform it to scalar.
"""
options['<device>'] = options.pop('<device>')[0]
def execute(self, ns, target):
"""
Implementation of 'mount delete' command.
"""
return mount.mount_delete(ns, target)
Mount = command.register_subcommands(
'Mount', __doc__,
{ 'list' : Lister,
'create' : Create,
'delete' : Delete,
'show' : Show,
},
)
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