def test_mdcreate_ok(self, mock_exec, mock_mddisplay,
mock_bdevs, mock_mdclean):
# should check if md already exists
# should check if md level is valid
# should check if all necessary devices exist
# should check if all devices are not parts of some md
# should clean md metadata which possibly are on all devices
# should run mdadm command to create new md
mock_mddisplay.return_value = \
[{'name': '/dev/md10', 'devices': ['/dev/fake10']},
# should also accept devices with missing 'devices' entry
{'name': '/dev/md11'}]
mock_bdevs.return_value = [{'device': '/dev/fake1'},
{'device': '/dev/fake2'}]
mu.mdcreate('/dev/md0', 'mirror', ['/dev/fake1', '/dev/fake2'])
mock_mdclean_expected_calls = [mock.call('/dev/fake1'),
mock.call('/dev/fake2')]
self.assertEqual(mock_mdclean_expected_calls,
mock_mdclean.call_args_list)
mock_exec.assert_called_once_with(
'mdadm', '--create', '--force', '/dev/md0', '-e', 'default',
'--level=mirror',
'--raid-devices=2', '/dev/fake1', '/dev/fake2',
check_exit_code=[0])
def test_mdcreate_device_clean(self, mock_mddisplay,
mock_bdevs, mock_mdclean, mock_exec):
# should clean md metadata on all devices before building new md
mock_mddisplay.return_value = []
mock_bdevs.return_value = [{'device': '/dev/fake1'},
{'device': '/dev/fake2'}]
mu.mdcreate('/dev/md0', 'mirror', ['/dev/fake1', '/dev/fake2'])
expected_calls = [mock.call('/dev/fake1'), mock.call('/dev/fake2')]
self.assertEqual(mock_mdclean.call_args_list, expected_calls)
def test_mdcreate_device_clean(self, mock_mddisplay, mock_bdevs,
mock_mdclean, mock_exec):
# should clean md metadata on all devices before building new md
mock_mddisplay.return_value = []
mock_bdevs.return_value = [{
'device': '/dev/fake1'
}, {
'device': '/dev/fake2'
}]
mu.mdcreate('/dev/md0', 'mirror', ['/dev/fake1', '/dev/fake2'])
expected_calls = [mock.call('/dev/fake1'), mock.call('/dev/fake2')]
self.assertEqual(mock_mdclean.call_args_list, expected_calls)
def test_mdcreate_ok(self, mock_exec, mock_mddisplay, mock_bdevs,
mock_mdclean):
# should check if md already exists
# should check if md level is valid
# should check if all necessary devices exist
# should check if all devices are not parts of some md
# should clean md metadata which possibly are on all devices
# should run mdadm command to create new md
mock_mddisplay.return_value = \
[{'name': '/dev/md10', 'devices': ['/dev/fake10']},
# should also accept devices with missing 'devices' entry
{'name': '/dev/md11'}]
mock_bdevs.return_value = [{
'device': '/dev/fake1'
}, {
'device': '/dev/fake2'
}]
mu.mdcreate('/dev/md0', 'mirror', ['/dev/fake1', '/dev/fake2'])
mock_mdclean_expected_calls = [
mock.call('/dev/fake1'),
mock.call('/dev/fake2')
]
self.assertEqual(mock_mdclean_expected_calls,
mock_mdclean.call_args_list)
mock_exec.assert_called_once_with('mdadm',
'--create',
'--force',
'/dev/md0',
'-e',
'default',
'--level=mirror',
'--raid-devices=2',
'/dev/fake1',
'/dev/fake2',
check_exit_code=[0])
def _do_partitioning(self):
LOG.debug('--- Partitioning disks (do_partitioning) ---')
# If disks are not wiped out at all, it is likely they contain lvm
# and md metadata which will prevent re-creating a partition table
# with 'device is busy' error.
mu.mdclean_all(skip_containers=CONF.skip_md_containers)
lu.lvremove_all()
lu.vgremove_all()
lu.pvremove_all()
LOG.debug("Enabling udev's rules blacklisting")
utils.blacklist_udev_rules(udev_rules_dir=CONF.udev_rules_dir,
udev_rules_lib_dir=CONF.udev_rules_lib_dir,
udev_rename_substr=CONF.udev_rename_substr,
udev_empty_rule=CONF.udev_empty_rule)
for parted in self.driver.partition_scheme.parteds:
for prt in parted.partitions:
# We wipe out the beginning of every new partition
# right after creating it. It allows us to avoid possible
# interactive dialog if some data (metadata or file system)
# present on this new partition and it also allows udev not
# hanging trying to parse this data.
utils.execute('dd',
'if=/dev/zero',
'bs=1M',
'seek=%s' % max(prt.begin - 3, 0),
'count=5',
'of=%s' % prt.device,
check_exit_code=[0])
# Also wipe out the ending of every new partition.
# Different versions of md stores metadata in different places.
# Adding exit code 1 to be accepted as for handling situation
# when 'no space left on device' occurs.
utils.execute('dd',
'if=/dev/zero',
'bs=1M',
'seek=%s' % max(prt.end - 3, 0),
'count=5',
'of=%s' % prt.device,
check_exit_code=[0, 1])
for parted in self.driver.partition_scheme.parteds:
pu.make_label(parted.name, parted.label)
for prt in parted.partitions:
pu.make_partition(prt.device, prt.begin, prt.end, prt.type)
for flag in prt.flags:
pu.set_partition_flag(prt.device, prt.count, flag)
if prt.guid:
pu.set_gpt_type(prt.device, prt.count, prt.guid)
# If any partition to be created doesn't exist it's an error.
# Probably it's again 'device or resource busy' issue.
if not os.path.exists(prt.name):
raise errors.PartitionNotFoundError(
'Partition %s not found after creation' % prt.name)
LOG.debug("Disabling udev's rules blacklisting")
utils.unblacklist_udev_rules(
udev_rules_dir=CONF.udev_rules_dir,
udev_rename_substr=CONF.udev_rename_substr)
# If one creates partitions with the same boundaries as last time,
# there might be md and lvm metadata on those partitions. To prevent
# failing of creating md and lvm devices we need to make sure
# unused metadata are wiped out.
mu.mdclean_all(skip_containers=CONF.skip_md_containers)
lu.lvremove_all()
lu.vgremove_all()
lu.pvremove_all()
# creating meta disks
for md in self.driver.partition_scheme.mds:
mu.mdcreate(md.name, md.level, md.devices, md.metadata)
# creating physical volumes
for pv in self.driver.partition_scheme.pvs:
lu.pvcreate(pv.name,
metadatasize=pv.metadatasize,
metadatacopies=pv.metadatacopies)
# creating volume groups
for vg in self.driver.partition_scheme.vgs:
lu.vgcreate(vg.name, *vg.pvnames)
# creating logical volumes
for lv in self.driver.partition_scheme.lvs:
lu.lvcreate(lv.vgname, lv.name, lv.size)
# making file systems
for fs in self.driver.partition_scheme.fss:
found_images = [
img for img in self.driver.image_scheme.images
if img.target_device == fs.device
]
if not found_images:
fu.make_fs(fs.type, fs.options, fs.label, fs.device)
def _do_partitioning(self):
LOG.debug('--- Partitioning disks (do_partitioning) ---')
# If disks are not wiped out at all, it is likely they contain lvm
# and md metadata which will prevent re-creating a partition table
# with 'device is busy' error.
mu.mdclean_all(skip_containers=CONF.skip_md_containers)
lu.lvremove_all()
lu.vgremove_all()
lu.pvremove_all()
for parted in self.driver.partition_scheme.parteds:
for prt in parted.partitions:
# We wipe out the beginning of every new partition
# right after creating it. It allows us to avoid possible
# interactive dialog if some data (metadata or file system)
# present on this new partition and it also allows udev not
# hanging trying to parse this data.
utils.execute('dd', 'if=/dev/zero', 'bs=1M',
'seek=%s' % max(prt.begin - 3, 0), 'count=5',
'of=%s' % prt.device, check_exit_code=[0])
# Also wipe out the ending of every new partition.
# Different versions of md stores metadata in different places.
# Adding exit code 1 to be accepted as for handling situation
# when 'no space left on device' occurs.
utils.execute('dd', 'if=/dev/zero', 'bs=1M',
'seek=%s' % max(prt.end - 3, 0), 'count=5',
'of=%s' % prt.device, check_exit_code=[0, 1])
parteds = []
parteds_with_rules = []
for parted in self.driver.partition_scheme.parteds:
if hu.is_multipath_device(parted.name):
parteds_with_rules.append(parted)
else:
parteds.append(parted)
utils.blacklist_udev_rules(udev_rules_dir=CONF.udev_rules_dir,
udev_rules_lib_dir=CONF.udev_rules_lib_dir,
udev_rename_substr=CONF.udev_rename_substr,
udev_empty_rule=CONF.udev_empty_rule)
self._make_partitions(parteds)
utils.unblacklist_udev_rules(
udev_rules_dir=CONF.udev_rules_dir,
udev_rename_substr=CONF.udev_rename_substr)
self._make_partitions(parteds_with_rules)
# If one creates partitions with the same boundaries as last time,
# there might be md and lvm metadata on those partitions. To prevent
# failing of creating md and lvm devices we need to make sure
# unused metadata are wiped out.
mu.mdclean_all(skip_containers=CONF.skip_md_containers)
lu.lvremove_all()
lu.vgremove_all()
lu.pvremove_all()
if parteds_with_rules:
utils.refresh_multipath()
# creating meta disks
for md in self.driver.partition_scheme.mds:
mu.mdcreate(md.name, md.level, md.devices, md.metadata)
# creating physical volumes
for pv in self.driver.partition_scheme.pvs:
lu.pvcreate(pv.name, metadatasize=pv.metadatasize,
metadatacopies=pv.metadatacopies)
# creating volume groups
for vg in self.driver.partition_scheme.vgs:
lu.vgcreate(vg.name, *vg.pvnames)
# creating logical volumes
for lv in self.driver.partition_scheme.lvs:
lu.lvcreate(lv.vgname, lv.name, lv.size)
# making file systems
for fs in self.driver.partition_scheme.fss:
found_images = [img for img in self.driver.image_scheme.images
if img.target_device == fs.device]
if not found_images:
fu.make_fs(fs.type, fs.options, fs.label, fs.device)
