def _create(self):
cmd = [
"lvcreate",
]
cmd.extend(['--name', self.name])
if self.size:
cmd.extend(['-L', self.size])
elif self.extents:
cmd.extend(['-l', self.extents])
if self.options:
cmd.extend(self.options)
cmd.append(self.base)
logger.debug("Creating lv command [%s]", cmd)
exec_sudo(cmd)
# save state
self.state['blockdev'][self.name] = {
'vgs': self.base,
'size': self.size,
'extents': self.extents,
'opts': self.options,
'device': '/dev/mapper/%s-%s' % (self.base, self.name)
}
def _notify_os_of_partition_changes(self, device_path, partition_devices):
"""Notify of of partition table changes
There is the need to call some programs to inform the operating
system of partition tables changes.
These calls are highly distribution and version specific. Here
a couple of different methods are used to get the best result.
"""
try:
exec_sudo(["partprobe", device_path])
exec_sudo(["udevadm", "settle"])
except CalledProcessError as e:
logger.info("Ignoring settling failure: %s", e)
pass
if self._all_part_devices_exist(partition_devices):
return
# If running inside Docker, make our nodes manually, because udev
# will not be working.
if os.path.exists("/.dockerenv"):
# kpartx cannot run in sync mode in docker.
exec_sudo(["kpartx", "-av", device_path])
exec_sudo(["dmsetup", "--noudevsync", "mknodes"])
return
exec_sudo(["kpartx", "-avs", device_path])
def create(self):
cmd = ["mkfs"]
cmd.extend(['-t', self.type])
if self.opts:
cmd.extend(self.opts)
cmd.extend(["-L", self.label])
if self.type in ('ext2', 'ext3', 'ext4'):
cmd.extend(['-U', self.uuid])
elif self.type == 'xfs':
cmd.extend(['-m', "uuid=%s" % self.uuid])
else:
logger.warning("UUID will not be written for fs type [%s]",
self.type)
if self.type in ('ext2', 'ext3', 'ext4', 'xfs'):
cmd.append('-q')
if 'blockdev' not in self.state:
self.state['blockdev'] = {}
device = self.state['blockdev'][self.base]['device']
cmd.append(device)
logger.debug("Creating fs command [%s]", cmd)
exec_sudo(cmd)
if 'filesys' not in self.state:
self.state['filesys'] = {}
self.state['filesys'][self.name] \
= {'uuid': self.uuid, 'label': self.label,
'fstype': self.type, 'opts': self.opts,
'device': device}
def _create(self):
# The PV's have saved their actual device name into the state
# during their _create(). Look at our base elements and thus
# find the underlying device paths in the state.
pvs_devs = []
for pv in self.base:
pvs_dev = self.state['pvs'][pv]['device']
pvs_devs.append(pvs_dev)
cmd = ["vgcreate", ]
cmd.append(self.name)
cmd.extend(pvs_devs)
if self.options:
cmd.extend(self.options)
logger.debug("Creating vg command [%s]", cmd)
exec_sudo(cmd)
# save state
if 'vgs' not in self.state:
self.state['vgs'] = {}
self.state['vgs'][self.name] = {
'opts': self.options,
'devices': self.base,
}
def _create(self):
# The PV's have saved their actual device name into the state
# during their _create(). Look at our base elements and thus
# find the underlying device paths in the state.
pvs_devs = []
for pv in self.base:
pvs_dev = self.state['pvs'][pv]['device']
pvs_devs.append(pvs_dev)
cmd = [
"vgcreate",
]
cmd.append(self.name)
cmd.extend(pvs_devs)
if self.options:
cmd.extend(self.options)
logger.debug("Creating vg command [%s]", cmd)
exec_sudo(cmd)
# save state
if 'vgs' not in self.state:
self.state['vgs'] = {}
self.state['vgs'][self.name] = {
'opts': self.options,
'devices': self.base,
}
def _create(self):
cmd = [
"lvcreate",
]
cmd.extend(['--name', self.name])
if self.type:
cmd.extend(['--type', self.type])
if self.thin_pool:
cmd.extend(['--thin-pool', self.thin_pool])
if self.size:
size = parse_abs_size_spec(self.size)
# ensuire size aligns with physical extents
size = size - size % PHYSICAL_EXTENT_BYTES
size_arg = '-V' if self.type == 'thin' else '-L'
cmd.extend([size_arg, '%dB' % size])
elif self.extents:
cmd.extend(['-l', self.extents])
if self.options:
cmd.extend(self.options)
cmd.append(self.base)
logger.debug("Creating lv command [%s]", cmd)
exec_sudo(cmd)
# save state
device_name = '%s-%s' % (self.base, self.name)
self.state['blockdev'][self.name] = {
'vgs': self.base,
'size': self.size,
'extents': self.extents,
'opts': self.options,
'device': '/dev/mapper/%s' % device_name
}
self.add_rollback(remove_device, device_name)
def umount(self):
for lvs in self.lvs:
lvs._umount()
for vgs in self.vgs:
vgs._umount()
exec_sudo(['udevadm', 'settle'])
def umount(self):
for lvs in self.lvs:
lvs._umount()
for vgs in self.vgs:
vgs._umount()
exec_sudo(['udevadm', 'settle'])
def cleanup(self):
for lvs in self.lvs:
lvs._cleanup()
for vgs in self.vgs:
vgs._cleanup()
exec_sudo(['udevadm', 'settle'])
def cleanup(self):
# remove the partition mappings made for the parent
# block-device by create() above. this is called from the
# child PartitionNode umount/delete/cleanup. Thus every
# partition calls it, but we only want to do it once and our
# gate.
if not self.already_cleaned:
self.already_cleaned = True
exec_sudo(
["kpartx", "-d", self.state['blockdev'][self.base]['device']])
def umount(self):
# Remove the partition mappings made for the parent
# block-device by create() above. This is called from the
# child PartitionNode umount. Thus every
# partition calls it, but we only want to do it once when
# we know this is the very last partition
self.number_of_partitions -= 1
if self.number_of_partitions == 0:
exec_sudo(
["kpartx", "-d", self.state['blockdev'][self.base]['device']])
def umount(self):
# Remove the partition mappings made for the parent
# block-device by create() above. This is called from the
# child PartitionNode umount. Thus every
# partition calls it, but we only want to do it once when
# we know this is the very last partition
self.number_of_partitions -= 1
if self.number_of_partitions == 0:
exec_sudo(["kpartx", "-d",
self.state['blockdev'][self.base]['device']])
def _create_gpt(self):
"""Create partitions with GPT"""
cmd = ['sgdisk', self.image_path]
# This padding gives us a little room for rounding so we don't
# go over the end of the disk
disk_free = self.disk_size - (2048 * 1024)
pnum = 1
for p in self.partitions:
args = {}
args['pnum'] = pnum
args['name'] = '%s' % p.get_name()
args['type'] = '%s' % p.get_type()
# convert from a relative/string size to bytes
size = parse_rel_size_spec(p.get_size(), disk_free)[1]
# We keep track in bytes, but specify things to sgdisk in
# megabytes so it can align on sensible boundaries. And
# create partitions right after previous so no need to
# calculate start/end - just size.
assert size <= disk_free
args['size'] = size // (1024 * 1024)
new_cmd = (
"-n",
"{pnum}:0:+{size}M".format(**args),
"-t",
"{pnum}:{type}".format(**args),
# Careful with this one, as {name} could have spaces
"-c",
"{pnum}:{name}".format(**args))
cmd.extend(new_cmd)
# Fill the state; we mount all partitions with kpartx
# below once we're done. So the device this partition
# will be seen at becomes "/dev/mapper/loop0pX"
assert self.device_path[:5] == "/dev/"
device_name = "/dev/mapper/%sp%d" % (self.device_path[5:], pnum)
self.state['blockdev'][p.get_name()] \
= {'device': device_name}
disk_free = disk_free - size
pnum = pnum + 1
logger.debug("Partition %s added, %s remaining in disk", pnum,
disk_free)
logger.debug("cmd: %s", ' '.join(cmd))
exec_sudo(cmd)
def cleanup(self):
# Information about the PV, VG and LV is typically
# cached in lvmetad. Even after removing PV device and
# partitions this data is not automatically updated
# which leads to a couple of problems.
# the 'pvscan --cache' scans the available disks
# and updates the cache.
# This is in cleanup because it must be called after the
# umount of the containing block device is done, (which should
# all be done in umount phase).
try:
exec_sudo(['pvscan', '--cache'])
except BlockDeviceSetupException as e:
logger.info("pvscan call failed [%s]", e.returncode)
def cleanup(self):
# Information about the PV, VG and LV is typically
# cached in lvmetad. Even after removing PV device and
# partitions this data is not automatically updated
# which leads to a couple of problems.
# the 'pvscan --cache' scans the available disks
# and updates the cache.
# This is in cleanup because it must be called after the
# umount of the containing block device is done, (which should
# all be done in umount phase).
try:
exec_sudo(['pvscan', '--cache'])
except BlockDeviceSetupException as e:
logger.info("pvscan call failed [%s]", e.returncode)
def create(self):
# This is a bit of a hack. Each of the partitions is actually
# in the graph, so for every partition we get a create() call
# as the walk happens. But we only need to create the
# partition table once...
if self.already_created:
logger.info("Not creating the partitions a second time.")
return
self.already_created = True
# the raw file on disk
image_path = self.state['blockdev'][self.base]['image']
# the /dev/loopX device of the parent
device_path = self.state['blockdev'][self.base]['device']
logger.info("Creating partition on [%s] [%s]", self.base, image_path)
assert self.label == 'mbr'
disk_size = self._size_of_block_dev(image_path)
with MBR(image_path, disk_size, self.align) as part_impl:
for part_cfg in self.partitions:
part_name = part_cfg.get_name()
part_bootflag = PartitionNode.flag_boot \
in part_cfg.get_flags()
part_primary = PartitionNode.flag_primary \
in part_cfg.get_flags()
part_size = part_cfg.get_size()
part_free = part_impl.free()
part_type = part_cfg.get_type()
logger.debug("Not partitioned space [%d]", part_free)
part_size = parse_rel_size_spec(part_size, part_free)[1]
part_no \
= part_impl.add_partition(part_primary, part_bootflag,
part_size, part_type)
logger.debug("Create partition [%s] [%d]", part_name, part_no)
# We're going to mount all partitions with kpartx
# below once we're done. So the device this partition
# will be seen at becomes "/dev/mapper/loop0pX"
assert device_path[:5] == "/dev/"
partition_device_name = "/dev/mapper/%sp%d" % \
(device_path[5:], part_no)
self.state['blockdev'][part_name] \
= {'device': partition_device_name}
# "saftey sync" to make sure the partitions are written
exec_sudo(["sync"])
# now all the partitions are created, get device-mapper to
# mount them
if not os.path.exists("/.dockerenv"):
exec_sudo(["kpartx", "-avs", device_path])
else:
# If running inside Docker, make our nodes manually,
# because udev will not be working. kpartx cannot run in
# sync mode in docker.
exec_sudo(["kpartx", "-av", device_path])
exec_sudo(["dmsetup", "--noudevsync", "mknodes"])
return
def loopdev_detach(loopdev):
logger.info("loopdev detach")
# loopback dev may be tied up a bit by udev events triggered
# by partition events
for try_cnt in range(10, 1, -1):
try:
exec_sudo(["losetup", "-d", loopdev])
return
except BlockDeviceSetupException as e:
# Do not raise an error - maybe other cleanup methods
# can at least do some more work.
logger.error("loopdev detach failed (%s)", e.returncode)
logger.debug("Gave up trying to detach [%s]", loopdev)
return 1
def loopdev_detach(loopdev):
logger.info("loopdev detach")
# loopback dev may be tied up a bit by udev events triggered
# by partition events
for try_cnt in range(10, 1, -1):
try:
exec_sudo(["losetup", "-d", loopdev])
return
except BlockDeviceSetupException as e:
# Do not raise an error - maybe other cleanup methods
# can at least do some more work.
logger.error("loopdev detach failed (%s)", e.returncode)
logger.debug("Gave up trying to detach [%s]", loopdev)
return 1
def _create_gpt(self):
"""Create partitions with GPT"""
cmd = ['sgdisk', self.image_path]
# This padding gives us a little room for rounding so we don't
# go over the end of the disk
disk_free = self.disk_size - (2048 * 1024)
pnum = 1
for p in self.partitions:
args = {}
args['pnum'] = pnum
args['name'] = '%s' % p.get_name()
args['type'] = '%s' % p.get_type()
# convert from a relative/string size to bytes
size = parse_rel_size_spec(p.get_size(), disk_free)[1]
# We keep track in bytes, but specify things to sgdisk in
# megabytes so it can align on sensible boundaries. And
# create partitions right after previous so no need to
# calculate start/end - just size.
assert size <= disk_free
args['size'] = size // (1024 * 1024)
new_cmd = ("-n", "{pnum}:0:+{size}M".format(**args),
"-t", "{pnum}:{type}".format(**args),
# Careful with this one, as {name} could have spaces
"-c", "{pnum}:{name}".format(**args))
cmd.extend(new_cmd)
# Fill the state; we mount all partitions with kpartx
# below once we're done. So the device this partition
# will be seen at becomes "/dev/mapper/loop0pX"
assert self.device_path[:5] == "/dev/"
device_name = "/dev/mapper/%sp%d" % (self.device_path[5:], pnum)
self.state['blockdev'][p.get_name()] \
= {'device': device_name}
disk_free = disk_free - size
pnum = pnum + 1
logger.debug("Partition %s added, %s remaining in disk",
pnum, disk_free)
logger.debug("cmd: %s", ' '.join(cmd))
exec_sudo(cmd)
def loopdev_attach(filename):
logger.info("loopdev attach")
logger.debug("Calling [sudo losetup --show -f %s]", filename)
block_device = exec_sudo(["losetup", "--show", "-f", filename])
# [:-1]: Cut of the newline
block_device = block_device[:-1]
logger.info("New block device [%s]", block_device)
return block_device
def loopdev_attach(filename):
logger.info("loopdev attach")
logger.debug("Calling [sudo losetup --show -f %s]", filename)
block_device = exec_sudo(["losetup", "--show", "-f", filename])
# [:-1]: Cut of the newline
block_device = block_device[:-1]
logger.info("New block device [%s]", block_device)
return block_device
def _create(self):
# the underlying device path of our parent was previously
# recorded into the state during blockdev creation; look it
# up.
phys_dev = self.state['blockdev'][self.base]['device']
cmd = ["pvcreate"]
cmd.append(phys_dev)
if self.options:
cmd.extend(self.options)
logger.debug("Creating pv command [%s]", cmd)
exec_sudo(cmd)
# save state
if 'pvs' not in self.state:
self.state['pvs'] = {}
self.state['pvs'][self.name] = {
'opts': self.options,
'device': phys_dev
}
def _create(self):
# the underlying device path of our parent was previously
# recorded into the state during blockdev creation; look it
# up.
phys_dev = self.state['blockdev'][self.base]['device']
cmd = ["pvcreate"]
cmd.append(phys_dev)
if self.options:
cmd.extend(self.options)
logger.debug("Creating pv command [%s]", cmd)
exec_sudo(cmd)
# save state
if 'pvs' not in self.state:
self.state['pvs'] = {}
self.state['pvs'][self.name] = {
'opts': self.options,
'device': phys_dev
}
def create(self):
logger.debug("mount called [%s]", self.mount_point)
rel_mp = self.mount_point if self.mount_point[0] != '/' \
else self.mount_point[1:]
mount_point = os.path.join(self.mount_base, rel_mp)
if not os.path.exists(mount_point):
# Need to sudo this because of permissions in the new
# file system tree.
exec_sudo(['mkdir', '-p', mount_point])
logger.info("Mounting [%s] to [%s]", self.name, mount_point)
exec_sudo(["mount", self.state['filesys'][self.base]['device'],
mount_point])
if 'mount' not in self.state:
self.state['mount'] = {}
self.state['mount'][self.mount_point] \
= {'name': self.name, 'base': self.base, 'path': mount_point}
if 'mount_order' not in self.state:
self.state['mount_order'] = []
self.state['mount_order'].append(self.mount_point)
def create(self):
logger.debug("mount called [%s]", self.mount_point)
rel_mp = self.mount_point if self.mount_point[0] != '/' \
else self.mount_point[1:]
mount_point = os.path.join(self.mount_base, rel_mp)
if not os.path.exists(mount_point):
# Need to sudo this because of permissions in the new
# file system tree.
exec_sudo(['mkdir', '-p', mount_point])
logger.info("Mounting [%s] to [%s]", self.name, mount_point)
exec_sudo(
["mount", self.state['filesys'][self.base]['device'], mount_point])
if 'mount' not in self.state:
self.state['mount'] = {}
self.state['mount'][self.mount_point] \
= {'name': self.name, 'base': self.base, 'path': mount_point}
if 'mount_order' not in self.state:
self.state['mount_order'] = []
self.state['mount_order'].append(self.mount_point)
def cmd_writefstab(self):
"""Creates the fstab"""
logger.info("Creating fstab")
# State should have been created by prior calls; we only need
# the dict
state = BlockDeviceState(self.state_json_file_name)
tmp_fstab = os.path.join(self.state_dir, "fstab")
with open(tmp_fstab, "wt") as fstab_fd:
# This gives the order in which this must be mounted
for mp in state['mount_order']:
logger.debug("Writing fstab entry for [%s]", mp)
fs_base = state['mount'][mp]['base']
fs_name = state['mount'][mp]['name']
fs_val = state['filesys'][fs_base]
if 'label' in fs_val:
diskid = "LABEL=%s" % fs_val['label']
else:
diskid = "UUID=%s" % fs_val['uuid']
# If there is no fstab entry - do not write anything
if 'fstab' not in state:
continue
if fs_name not in state['fstab']:
continue
options = state['fstab'][fs_name]['options']
dump_freq = state['fstab'][fs_name]['dump-freq']
fsck_passno = state['fstab'][fs_name]['fsck-passno']
fstab_fd.write("%s %s %s %s %s %s\n" %
(diskid, mp, fs_val['fstype'], options,
dump_freq, fsck_passno))
target_etc_dir = os.path.join(self.params['build-dir'], 'built', 'etc')
exec_sudo(['mkdir', '-p', target_etc_dir])
exec_sudo(['cp', tmp_fstab, os.path.join(target_etc_dir, "fstab")])
return 0
def cleanup(self):
# First do a copy of all physical devices to individual
# temporary files. This is because the physical device is
# full of LVM metadata describing the volumes and we don't
# have a better way to handle removing the devices/volumes
# from the host system while persisting this metadata in the
# underlying devices.
tempfiles = collections.OrderedDict() # to unwind in same order!
for pvs in self.pvs:
phys_dev = self.state['blockdev'][pvs.base]['device']
target_file = tempfile.NamedTemporaryFile(delete=False)
target_file.close()
exec_sudo(['dd', 'if=%s' % phys_dev, 'of=%s' % target_file.name])
tempfiles[target_file.name] = phys_dev
# once copied, start the removal in reverse order
for lvs in self.lvs:
lvs._cleanup()
for vgs in self.vgs:
vgs._cleanup()
for pvs in self.pvs:
pvs._cleanup()
exec_sudo(['udevadm', 'settle'])
# after the cleanup copy devices back
for tmp_name, phys_dev in tempfiles.items():
exec_sudo(['dd', 'if=%s' % tmp_name, 'of=%s' % phys_dev])
os.unlink(tmp_name)
def cmd_writefstab(self):
"""Creates the fstab"""
logger.info("Creating fstab")
# State should have been created by prior calls; we only need
# the dict
state = BlockDeviceState(self.state_json_file_name)
tmp_fstab = os.path.join(self.state_dir, "fstab")
with open(tmp_fstab, "wt") as fstab_fd:
# This gives the order in which this must be mounted
for mp in state['mount_order']:
logger.debug("Writing fstab entry for [%s]", mp)
fs_base = state['mount'][mp]['base']
fs_name = state['mount'][mp]['name']
fs_val = state['filesys'][fs_base]
if 'label' in fs_val:
diskid = "LABEL=%s" % fs_val['label']
else:
diskid = "UUID=%s" % fs_val['uuid']
# If there is no fstab entry - do not write anything
if 'fstab' not in state:
continue
if fs_name not in state['fstab']:
continue
options = state['fstab'][fs_name]['options']
dump_freq = state['fstab'][fs_name]['dump-freq']
fsck_passno = state['fstab'][fs_name]['fsck-passno']
fstab_fd.write("%s %s %s %s %s %s\n"
% (diskid, mp, fs_val['fstype'],
options, dump_freq, fsck_passno))
target_etc_dir = os.path.join(self.params['build-dir'], 'built', 'etc')
exec_sudo(['mkdir', '-p', target_etc_dir])
exec_sudo(['cp', tmp_fstab, os.path.join(target_etc_dir, "fstab")])
return 0
def _create(self):
cmd = ["lvcreate", ]
cmd.extend(['--name', self.name])
if self.size:
cmd.extend(['-L', self.size])
elif self.extents:
cmd.extend(['-l', self.extents])
if self.options:
cmd.extend(self.options)
cmd.append(self.base)
logger.debug("Creating lv command [%s]", cmd)
exec_sudo(cmd)
# save state
self.state['blockdev'][self.name] = {
'vgs': self.base,
'size': self.size,
'extents': self.extents,
'opts': self.options,
'device': '/dev/mapper/%s-%s' % (self.base, self.name)
}
def create(self):
cmd = ["mkfs"]
cmd.extend(['-t', self.type])
if self.opts:
cmd.extend(self.opts)
if self.type in ('vfat', 'fat'):
cmd.extend(["-n", self.label])
else:
cmd.extend(["-L", self.label])
if self.type in ('ext2', 'ext3', 'ext4'):
cmd.extend(['-U', self.uuid])
elif self.type == 'xfs':
cmd.extend(['-m', "uuid=%s" % self.uuid])
else:
logger.warning("UUID will not be written for fs type [%s]",
self.type)
if self.type in ('ext2', 'ext3', 'ext4', 'xfs'):
cmd.append('-q')
if 'blockdev' not in self.state:
self.state['blockdev'] = {}
device = self.state['blockdev'][self.base]['device']
cmd.append(device)
logger.debug("Creating fs command [%s]", cmd)
exec_sudo(cmd)
if 'filesys' not in self.state:
self.state['filesys'] = {}
self.state['filesys'][self.name] \
= {'uuid': self.uuid, 'label': self.label,
'fstype': self.type, 'opts': self.opts,
'device': device}
def create(self):
# This is a bit of a hack. Each of the partitions is actually
# in the graph, so for every partition we get a create() call
# as the walk happens. But we only need to create the
# partition table once...
self.number_of_partitions += 1
if self.number_of_partitions > 1:
logger.info("Not creating the partitions a second time.")
return
# the raw file on disk
self.image_path = self.state['blockdev'][self.base]['image']
# the /dev/loopX device of the parent
self.device_path = self.state['blockdev'][self.base]['device']
# underlying size
self.disk_size = self._size_of_block_dev(self.image_path)
logger.info("Creating partition on [%s] [%s]",
self.base, self.image_path)
assert self.label in ('mbr', 'gpt')
if self.label == 'mbr':
self._create_mbr()
elif self.label == 'gpt':
self._create_gpt()
# "saftey sync" to make sure the partitions are written
exec_sudo(["sync"])
# now all the partitions are created, get device-mapper to
# mount them
if not os.path.exists("/.dockerenv"):
exec_sudo(["kpartx", "-avs", self.device_path])
else:
# If running inside Docker, make our nodes manually,
# because udev will not be working. kpartx cannot run in
# sync mode in docker.
exec_sudo(["kpartx", "-av", self.device_path])
exec_sudo(["dmsetup", "--noudevsync", "mknodes"])
return
def create(self):
# This is a bit of a hack. Each of the partitions is actually
# in the graph, so for every partition we get a create() call
# as the walk happens. But we only need to create the
# partition table once...
self.number_of_partitions += 1
if self.number_of_partitions > 1:
logger.info("Not creating the partitions a second time.")
return
# the raw file on disk
self.image_path = self.state['blockdev'][self.base]['image']
# the /dev/loopX device of the parent
self.device_path = self.state['blockdev'][self.base]['device']
# underlying size
self.disk_size = self._size_of_block_dev(self.image_path)
logger.info("Creating partition on [%s] [%s]", self.base,
self.image_path)
assert self.label in ('mbr', 'gpt')
if self.label == 'mbr':
self._create_mbr()
elif self.label == 'gpt':
self._create_gpt()
# "saftey sync" to make sure the partitions are written
exec_sudo(["sync"])
# now all the partitions are created, get device-mapper to
# mount them
if not os.path.exists("/.dockerenv"):
exec_sudo(["kpartx", "-avs", self.device_path])
else:
# If running inside Docker, make our nodes manually,
# because udev will not be working. kpartx cannot run in
# sync mode in docker.
exec_sudo(["kpartx", "-av", self.device_path])
exec_sudo(["dmsetup", "--noudevsync", "mknodes"])
return
def umount(self):
logger.info("Called for [%s]", self.name)
# Before calling umount call 'fstrim' on the mounted file
# system. This discards unused blocks from the mounted
# file system and therefore decreases the resulting image
# size.
# A race condition can occur when trying to fstrim immediately after
# deleting a file resulting in that free space not being reclaimed.
# Calling sync before fstrim is a workaround for this behaviour.
# https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg02978.html
exec_sudo(["sync"])
exec_sudo([
"fstrim", "--verbose",
self.state['mount'][self.mount_point]['path']
])
exec_sudo(["umount", self.state['mount'][self.mount_point]['path']])
def umount(self):
logger.info("Called for [%s]", self.name)
# Before calling umount, call 'fstrim' on suitable mounted
# file systems. This discards unused blocks from the mounted
# file system and therefore decreases the resulting image
# size.
#
# A race condition can occur when trying to fstrim immediately
# after deleting a file resulting in that free space not being
# reclaimed. Calling sync before fstrim is a workaround for
# this behaviour.
# https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg02978.html
exec_sudo(["sync"])
if self.state['filesys'][self.base]['fstype'] != 'vfat':
exec_sudo(["fstrim", "--verbose",
self.state['mount'][self.mount_point]['path']])
exec_sudo(["umount", self.state['mount'][self.mount_point]['path']])
def _umount(self):
exec_sudo(['lvchange', '-an',
'/dev/%s/%s' % (self.base, self.name)])
def _cleanup(self):
exec_sudo(
['pvremove', '--force', self.state['pvs'][self.name]['device']])
def _umount(self):
exec_sudo(['lvchange', '-an', '/dev/%s/%s' % (self.base, self.name)])
def _umount(self):
exec_sudo(['vgchange', '-an', self.name])
def _umount(self):
exec_sudo(['vgchange', '-an', self.name])
def cleanup(self):
try:
exec_sudo(['pvscan', '--cache'])
except subprocess.CalledProcessError as cpe:
logger.debug("pvscan call result [%s]", cpe)
def _cleanup(self):
exec_sudo(['vgchange', '-an', self.name])
def umount(self, state):
logger.info("Called for [%s]", self.name)
exec_sudo(["umount", state['mount'][self.mount_point]['path']])
def _cleanup(self):
exec_sudo(['vgchange', '-an', self.name])
exec_sudo(['vgremove', '--force', self.name])
def _cleanup(self):
exec_sudo(['lvchange', '-an', '/dev/%s/%s' % (self.base, self.name)])
exec_sudo(
['lvremove', '--force',
'/dev/%s/%s' % (self.base, self.name)])