def runTest(self):
# Test that passing the kwargs to __init__ works.
self.assertEqual(self.part.disk, self.disk)
self.assertIsInstance(self.part.geometry, parted.Geometry)
self.assertEqual(self.part.type, parted.PARTITION_NORMAL)
self.assertEqual(self.part.fileSystem.type, "ext2")
# Test that setting the RW attributes directly works.
self.part.type = parted.PARTITION_EXTENDED
self.assertEqual(self.part.type, parted.PARTITION_EXTENDED)
# Test that setting the RO attributes directly doesn't work.
exn = (AttributeError, TypeError)
with self.assertRaises(exn):
self.part.number = 1
with self.assertRaises(exn):
self.part.active = True
with self.assertRaises(exn):
self.part.name = "blah"
with self.assertRaises(exn):
self.part.type = "blah"
with self.assertRaises(exn):
self.part.geometry = parted.Geometry(self.device, start=10, length=20)
with self.assertRaises(exn):
self.part.fileSystem = parted.FileSystem(type='ext4', geometry=self.geom)
with self.assertRaises(exn):
self.part.disk = self.disk
# Check that looking for invalid attributes fails properly.
with self.assertRaises((AttributeError)):
print(self.part.blah)
def get_partition_by_path(self, path, fs_type):
""" """
p = self.getPartitionByPath(path)
fs = parted.FileSystem(fs_type, p.geometry)
p.fileSystem = fs
partition = self._instance_partition(p)
return partition
def __init__(self, disk=None, type=None, fs=None, geometry=None, PedPartition=None):
if PedPartition is None:
if disk is None:
raise parted.PartitionException("no disk specified")
elif type is None:
raise parted.PartitionException("no type specified")
elif geometry is None:
raise parted.PartitionException("no geometry specified")
self._fileSystem = fs
self._geometry = geometry
self._disk = disk
if fs is None:
self.__partition = _ped.Partition(disk.getPedDisk(), type, geometry.start, geometry.end)
else:
self.__partition = _ped.Partition(disk.getPedDisk(), type, geometry.start, geometry.end, parted.fileSystemType[fs.type])
else:
self.__partition = PedPartition
self._geometry = parted.Geometry(PedGeometry=self.__partition.geom)
if disk is None:
self._disk = parted.Disk(PedDisk=self.__partition.disk)
else:
self._disk = disk
if self.__partition.fs_type is None:
self._fileSystem = None
else:
self._fileSystem = parted.FileSystem(type=self.__partition.fs_type.name, geometry=self._geometry)
def putGeom(self, limPartList):
#Write the disk geometry information
#Template code @ https://bitbucket.org/rbistolfi/vinstall/wiki/pyparted
disk = parted.freshDisk(self.dev, "msdos")
for lpar in limPartList:
if lpar.parttype != 'artificial':
#TODO: should check that the geometry is within the disk
g = parted.Geometry(device=self.dev,
start=lpar.start,
end=lpar.end)
fs = parted.FileSystem(type=lpar.fstype, geometry=g)
#TODO: eventually we should be able to handle logical/extended
#partitions - right now it's primary only
ptype = parted.PARTITION_NORMAL
if lpar.parttype != 'primary':
raise errors.partError(lpar.parttype)
p = parted.Partition(disk=disk, fs=fs, type=ptype, geometry=g)
c = parted.Constraint(exactGeom=g)
disk.addPartition(partition=p, constraint=c)
setFlags(p, lpar.flags)
disk.commit()
#refresh the OS's view of the disk
support.partprobe(self.node)
#put file systems onto the new partitions
for lpar in limPartList:
if lpar.parttype != 'artificial':
support.mkfs(lpar.composeNode(self.node), lpar.fstype)
def apply(self, disk, simulate):
""" Create a partition with the given type... """
try:
if not disk:
raise RuntimeError("Cannot create partition on empty disk!")
length = parted.sizeToSectors(self.size, 'B',
disk.device.sectorSize)
geom = parted.Geometry(device=self.device,
start=self.part_offset,
length=length)
# Don't run off the end of the disk ...
geom_cmp = self.get_all_remaining_geom(disk, disk.device,
self.part_offset)
if geom_cmp.length < geom.length or geom.length < 0:
geom = geom_cmp
if "LVM" in self.fstype:
fs = None
else:
fs = parted.FileSystem(type=self.fstype, geometry=geom)
p = parted.Partition(disk=disk,
type=self.ptype,
fs=fs,
geometry=geom)
disk.addPartition(p, parted.Constraint(device=self.device))
self.part = p
self.part_end = self.part_offset + length
except Exception as e:
self.set_errors(e)
return False
return True
def partitionAdd(self,
disk,
free,
align=None,
length=None,
fs_type=None,
type=parted.PARTITION_NORMAL):
start = free.start
if length:
end = start + length - 1
else:
end = free.end
length = free.end - start + 1
if not align:
align = disk.partitionAlignment.intersect(
disk.device.optimumAlignment)
if not align.isAligned(free, start):
start = align.alignNearest(free, start)
end_align = parted.Alignment(offset=align.offset - 1,
grainSize=align.grainSize)
if not end_align.isAligned(free, end):
end = end_align.alignNearest(free, end)
geometry = parted.Geometry(disk.device, start=start, end=end)
if fs_type:
fs = parted.FileSystem(type=fs_type, geometry=geometry)
else:
fs = None
partition = parted.Partition(disk, type=type, geometry=geometry, fs=fs)
constraint = parted.Constraint(exactGeom=partition.geometry)
disk.addPartition(partition, constraint)
return partition
def partition(self):
"""
Create a partition table on the block device.
The newly created partition will have the following characteristics:
- a primary partition using 100% of the device capacity
- optimal alignment given the disk topology information
- a MS-DOS disk label for simple BIOS booting on PC-type hardware
- marked as bootable
"""
self.logger.info('creating primary partition')
device = parted.getDevice(self.path)
self.logger.debug('created %s', device)
disk = parted.freshDisk(device, 'msdos')
self.logger.debug('created %s', disk)
geometry = parted.Geometry(device=device,
start=1,
length=device.getLength() - 1)
self.logger.debug('created %s', geometry)
filesystem = parted.FileSystem(type='ext3', geometry=geometry)
self.logger.debug('created %s', filesystem)
partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem,
geometry=geometry)
self.logger.debug('created %s', partition)
disk.addPartition(partition=partition,
constraint=device.optimalAlignedConstraint)
partition.setFlag(parted.PARTITION_BOOT)
disk.commit()
def setUp(self):
super(PartitionGPTNewTestCase, self).setUp()
self.geom = parted.Geometry(self.device, start=100, length=100)
self.fs = parted.FileSystem(type='ext2', geometry=self.geom)
self.part = parted.Partition(self.disk,
parted.PARTITION_NORMAL,
geometry=self.geom,
fs=self.fs)
def get_partition_by_number(self, number, fs_type):
""" """
for p in self.partitions:
if p.number == number:
fs = parted.FileSystem(fs_type, p.geometry)
p.fileSystem = fs
partition = self._instance_partition(p)
return partition
return None
def raw_format(device_path, fstype, volume_label):
do_umount(device_path)
# First erase MBR and partition table , if any
os.system("dd if=/dev/zero of=%s bs=512 count=1 >/dev/null 2>&1" %
device_path)
device = parted.getDevice(device_path)
# Create a default partition set up
disk = parted.freshDisk(device, 'msdos')
disk.commit()
regions = disk.getFreeSpaceRegions()
if len(regions) > 0:
#print "Build partition"
# Define size
region = regions[-1]
start = parted.sizeToSectors(1, "MiB", device.sectorSize)
#print "start %s" % start
end = device.getLength() - start - 1024
#print end
# Alignment
#cylinder = device.endSectorToCylinder(end)
#end = device.endCylinderToSector(cylinder)
#print end
try:
geometry = parted.Geometry(device=device, start=start, end=end)
except:
print "Geometry error - Can't create partition"
sys.exit(5)
# fstype
fs = parted.FileSystem(type=fstype, geometry=geometry)
# Create partition
partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
geometry=geometry,
fs=fs)
constraint = parted.Constraint(exactGeom=geometry)
disk.addPartition(partition=partition, constraint=constraint)
disk.commit()
# Format partition according to the fstype specified
if fstype == "fat32":
os.system("mkdosfs -F 32 -n \"%s\" %s >/dev/null 2>&1" %
(volume_label, partition.path))
if fstype == "ntfs":
os.system("mkntfs -f -L \"%s\" %s >/dev/null 2>&1" %
(volume_label, partition.path))
elif fstype == "ext4":
os.system("mkfs.ext4 -L \"%s\" %s >/dev/null 2>&1" %
(volume_label, partition.path))
sys.exit(0)
def createpartition(self, device, disk, start, end, type):
''' Create a single partition of the specified type and size and add
it to the disk object, using the parted module.
'''
geo = parted.Geometry(device=device, start=start, end=end)
fs = parted.FileSystem(type=type, geometry=geo)
part = parted.Partition(disk=disk, fs=fs, type=parted.PARTITION_NORMAL,
geometry=geo)
constraint = parted.Constraint(exactGeom=geo)
disk.addPartition(partition=part, constraint=constraint)
def create_partitioning(device):
"""Returns a suitable partitioning (a disk) of the given
device. You must specify device path (e.g. "/dev/sda"). Note that
no changes will be made to the device. To write the partition to
device use commit."""
disk = parted.freshDisk(device, 'gpt')
geometries = _compute_geometries(device)
# Create ESP
esp = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type='fat32',
geometry=geometries['esp']),
geometry=geometries['esp'])
esp.setFlag(parted.PARTITION_BOOT)
disk.addPartition(partition=esp,
constraint=device.optimalAlignedConstraint)
# Create Data partition
data = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type='ext4',
geometry=geometries['data']),
geometry=geometries['data'])
disk.addPartition(partition=data,
constraint=device.optimalAlignedConstraint)
# Create system.a partition
systemA = parted.Partition(
disk=disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type='ext4', geometry=geometries['systemA']),
geometry=geometries['systemA'])
disk.addPartition(partition=systemA,
constraint=device.optimalAlignedConstraint)
# Create system.b partition
systemB = parted.Partition(
disk=disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type='ext4', geometry=geometries['systemB']),
geometry=geometries['systemB'])
disk.addPartition(partition=systemB,
constraint=device.optimalAlignedConstraint)
return (disk)
def particion_pri(sdb, disk, size, tipo, fin):
geometry1 = parted.Geometry(start=fin,
length=parted.sizeToSectors(
size, 'MiB', sdb.sectorSize),
device=sdb)
filesystem1 = parted.FileSystem(type=tipo, geometry=geometry1)
partition1 = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem1,
geometry=geometry1)
disk.addPartition(partition1, constraint=sdb.optimalAlignedConstraint)
disk.commit()
return partition1.geometry.end
def create_partition(disk: parted.Disk, start, end, fscode, fstype=None):
log.info(f'Creating partition ({start}-{end}) type {fscode}')
geometry = parted.Geometry(device=disk.device, start=start, end=end)
new_partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type=fscode,
geometry=geometry),
geometry=geometry)
if not disk.addPartition(partition=new_partition,
constraint=parted.Constraint(exactGeom=geometry)):
die(f'Creating partition failed')
disk.commit()
if fstype:
sh(f'mkfs.{fstype}', new_partition.path)
def partition(diskname, specs, force=False, check_mode=False):
"""
Create requested partitions.
Returns nr. of created partitions or 0 when the disk was already partitioned.
"""
count = 0
dev = parted.getDevice(diskname)
try:
disk = parted.newDisk(dev)
except parted.DiskException:
# unrecognizable format, treat as empty disk
disk = None
if disk and len(disk.partitions) > 0 and not force:
print "skipping", diskname
return 0
# create new partition table, wiping all existing data
disk = parted.freshDisk(dev, 'gpt')
# calculate nr. of partitions of each size
assign_space(dev.getSize(), specs)
last_megabyte = 1
for spec in specs:
for _ in range(spec.count):
# create the partition
start = parted.sizeToSectors(last_megabyte, "MiB", dev.sectorSize)
length = parted.sizeToSectors(spec.size, "MiB", dev.sectorSize)
geo = parted.Geometry(device=dev, start=start, length=length)
filesystem = parted.FileSystem(type='ext4', geometry=geo)
part = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem,
geometry=geo)
disk.addPartition(partition=part,
constraint=dev.optimalAlignedConstraint)
last_megabyte += spec.size
count += 1
try:
if not check_mode:
disk.commit()
except parted.IOException:
# partitions have been written, but we have been unable to inform the
# kernel of the change, probably because they are in use.
# Ignore it and hope for the best...
pass
return count
def _new_partition(self, device, disk, start, length, set_boot=False):
geometry = parted.Geometry(device=device, start=start, length=length)
self.logger.debug('created %s', geometry)
filesystem = parted.FileSystem(type='ext4', geometry=geometry)
self.logger.debug('created %s', filesystem)
partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem,
geometry=geometry)
self.logger.debug('created %s', partition)
disk.addPartition(partition=partition,
constraint=device.optimalAlignedConstraint)
if set_boot:
partition.setFlag(parted.PARTITION_BOOT)
return partition
def partition(device):
dev = parted.Device(path=device)
disk = parted.freshDisk(dev, 'msdos')
constraint = parted.Constraint(device=dev)
new_geom = parted.Geometry(device=dev,
start=1,
end=(constraint.maxSize - 1))
filesystem = parted.FileSystem(type="ext2", geometry=new_geom)
partition = parted.Partition(disk=disk,
fs=filesystem,
type=parted.PARTITION_NORMAL,
geometry=new_geom)
constraint = parted.Constraint(exactGeom=new_geom)
partition.setFlag(parted.PARTITION_BOOT)
disk.addPartition(partition=partition, constraint=constraint)
disk.commit()
def partition(device):
"""Recieves a device object.
Wipes the device and creates a single partition."""
wipe(device)
disk = parted.freshDisk(device, 'msdos')
geometry = parted.Geometry(device=device,
start=1,
length=device.getLength() - 1)
filesystem = parted.FileSystem(type='ext4', geometry=geometry)
partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem,
geometry=geometry)
disk.addPartition(partition=partition,
constraint=device.optimalAlignedConstraint)
partition.setFlag(parted.PARTITION_BOOT)
disk.commit()
def appendSizedExt4PartitionOptimizedForMicroSDHC(parted_disk,
desired_size_bytes=None):
if len(parted_disk.partitions) >= parted_disk.maxSupportedPartitionCount:
return
## get largest free region
parted_largestfreeregion_geometry = max(parted_disk.getFreeSpaceRegions(),
key=lambda x: x.getLength())
## define optimum settings for micrSDHC card (first 4MiB contains only MBR and everything aligned to 4MiB)
optAlignmentForRasperry = parted_disk.device.optimumAlignment
optAlignmentForRasperry.offset = int(4 * 1024**2 /
parted_disk.device.sectorSize) #8192
optAlignmentForRasperry.grainSize = int(
4 * 1024**2 / parted_disk.device.sectorSize) #8192
assert (optAlignmentForRasperry.offset == 8192)
assert (optAlignmentForRasperry.grainSize == 8192)
#leave space between partitions
newstart = optAlignmentForRasperry.alignUp(
parted_largestfreeregion_geometry,
parted_largestfreeregion_geometry.start)
newend = parted_largestfreeregion_geometry.end
if not desired_size_bytes is None:
new_size_sectors = int(desired_size_bytes /
parted_disk.device.sectorSize)
newend = optAlignmentForRasperry.alignDown(
parted_largestfreeregion_geometry, newstart + new_size_sectors)
parted_newpartition_geometry = parted.Geometry(device=parted_disk.device,
start=newstart,
end=newend)
parted_appended_partition = parted.Partition(
disk=parted_disk,
type=parted.PARTITION_NORMAL,
fs=parted.FileSystem(type='ext4',
geometry=parted_newpartition_geometry),
geometry=parted_newpartition_geometry)
parted_disk.addPartition(partition=parted_appended_partition,
constraint=parted.Constraint(
exactGeom=parted_appended_partition.geometry))
def _create_partition(self, region, start, end, format_type, type=parted.PARTITION_NORMAL):
"""Creates the partition with geometry specified"""
# libparted doesn't let setting partition number, so we skip it, too
# We want our new partition to be optimally aligned
# (you can use minimalAlignedConstraint, if you wish).
alignment = self.device.optimalAlignedConstraint
constraint = self.device.getConstraint().intersect(alignment) # parted.Constraint(maxGeom=region).intersect(alignment)
data = {
'start': constraint.startAlign.alignUp(region, region.start),
'end': constraint.endAlign.alignDown(region, region.end),
}
part_start = int(start)
# check sur data['start']
part_end = self._parse_last_sector_expr(
part_start, end, self.device.sectorSize) # self._ask_value(
# check sur data['end']
try:
geometry = parted.Geometry(
device=self.device, start=part_start, end=part_end)
fs = parted.FileSystem(type=format_type, geometry=geometry)
partition = parted.Partition(
disk=self.disk,
type=type,
geometry=geometry,
fs=fs
)
self.disk.addPartition(partition=partition, constraint=constraint)
except (parted.PartitionException, parted.GeometryException, parted.CreateException) as e:
# GeometryException accounts for incorrect start/end values (e.g. start < end),
# CreateException is raised e.g. when the partition doesn't fit on the disk.
# PartedException is a generic error (e.g. start/end values out of range)
raise RuntimeError(e.message)
return partition
def _makeVDisk(self):
self.parts = [('p1', 'junk')]
self.image_file = self.path
os_call([
'dd', 'bs=4096', 'count=5000', 'if=/dev/zero',
'of=' + self.image_file
])
with subprocess.Popen(['sudo', 'losetup', '-f'],
stdout=subprocess.PIPE,
universal_newlines=True) as lo_list:
out = lo_list.stdout.read().split('\n')[:-1]
if len(out) > 0:
self.path = out[0]
else:
self.path = '/dev/loop0'
self.part_prefix = 'p'
os_call(['sudo', 'losetup', '-P', self.path, self.image_file])
self.device = parted.getDevice(self.path)
disk = parted.freshDisk(self.device, 'msdos')
geom = parted.Geometry(self.device,
start=1,
length=self.device.getLength() - 1)
fs = parted.FileSystem('fat16', geom)
new_part = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=fs,
geometry=geom)
disk.addPartition(partition=new_part,
constraint=self.device.getConstraint())
new_part.setFlag(parted.PARTITION_BOOT)
try:
disk.commit()
except:
pass
self.format(mk_vfat(), 0)
self.parts = self.partitions()
self.__undoLo = ['sudo', 'losetup', '-d', self.path]
def create_usb_partitions(self):
# Code earlier has verified that usb drive is unmounted.
self.wipe_old_partitions()
subprocess.check_call('sync')
device = parted.getDevice(self.usb_device_name)
disk = parted.freshDisk(device, 'msdos')
constraint = parted.Constraint(device=device)
geometry = parted.Geometry(device=device,
start=1,
end=(constraint.maxSize - 1))
filesystem = parted.FileSystem(type='fat32', geometry=geometry)
partition = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=filesystem,
geometry=geometry)
disk.addPartition(partition=partition,
constraint=device.optimalAlignedConstraint)
partition.setFlag(parted.PARTITION_BOOT)
disk.commit()
subprocess.check_call('sync')
import time
time.sleep(
5) # The kernel seems to take a while to detect new partitions.
subprocess.check_call(['mkfs.vfat', self.usb_partition])
def add_partition(self, start, end, fstype, flags, ptype):
"""
Create a specified partition by start and end sectors.
:param start: The sector the partition will start at.
:param end: The sector the partition will end at.
:param fstype: The fstype of the partition if it's valid.
:param flags: The flags to set on the partition.
:param ptype: The type of partition it should be.
:return:
"""
# An array of a few fs that aren't actually valid parted fs's.
bad_fs = [
'LVM2_member', 'swap', 'linux_raid_member', 'vfat', 'crypto_LUKS'
]
try:
# Set the partition type.
if ptype == 0:
p_type = parted.PARTITION_NORMAL
elif ptype == 1:
p_type = parted.PARTITION_LOGICAL
elif ptype == 2:
p_type = parted.PARTITION_EXTENDED
else:
p_type = parted.PARTITION_NORMAL
geometry = parted.Geometry(start=start,
end=end,
device=self.device)
if fstype and fstype not in bad_fs:
filesystem = parted.FileSystem(type=fstype, geometry=geometry)
partition = parted.Partition(disk=self.pdisk,
type=p_type,
fs=filesystem,
geometry=geometry)
else:
partition = parted.Partition(disk=self.pdisk,
type=p_type,
geometry=geometry)
# Set any flags needed.
for flags in flags.split(','):
if "boot" in flags:
partition.setFlag(parted.PARTITION_BOOT)
elif "lvm" in flags:
partition.setFlag(parted.PARTITION_LVM)
elif "swap" in flags:
partition.setFlag(parted.PARTITION_SWAP)
elif "raid" in flags:
partition.setFlag(parted.PARTITION_RAID)
elif "bios_grub" in flags:
partition.setFlag(parted.PARTITION_BIOS_GRUB)
elif "esp" in flags:
partition.setFlag(parted.PARTITION_ESP)
elif "prep" in flags:
partition.setFlag(parted.PARTITION_PREP)
self.pdisk.addPartition(
partition, constraint=parted.Constraint(exactGeom=geometry))
self.pdisk.commit()
# Catch any IOException then print a warning and skip it, normally it's
# due to the device being active in some way lvm, md, etc.
except IOException:
self.log.exception("Caught an IOException, when running parted.")
pass
def partition_reset(self, dev: Dict[str, Any]):
"""
Repartition the SD card from scratch
"""
try:
import parted
except ModuleNotFoundError:
raise Fail("please install python3-parted")
device = parted.getDevice(dev["path"])
device.clobber()
disk = parted.freshDisk(device, "msdos")
# Add 256M fat boot
optimal = device.optimumAlignment
constraint = parted.Constraint(
startAlign=optimal,
endAlign=optimal,
startRange=parted.Geometry(
device=device,
start=parted.sizeToSectors(4, "MiB", device.sectorSize),
end=parted.sizeToSectors(16, "MiB", device.sectorSize)),
endRange=parted.Geometry(
device=device,
start=parted.sizeToSectors(256, "MiB", device.sectorSize),
end=parted.sizeToSectors(512, "MiB", device.sectorSize)),
minSize=parted.sizeToSectors(256, "MiB", device.sectorSize),
maxSize=parted.sizeToSectors(260, "MiB", device.sectorSize))
geometry = parted.Geometry(
device,
start=0,
length=parted.sizeToSectors(256, "MiB", device.sectorSize),
)
geometry = constraint.solveNearest(geometry)
boot = parted.Partition(
disk=disk, type=parted.PARTITION_NORMAL, fs=parted.FileSystem(type='fat32', geometry=geometry),
geometry=geometry)
boot.setFlag(parted.PARTITION_LBA)
disk.addPartition(partition=boot, constraint=constraint)
# Add 4G ext4 rootfs
constraint = parted.Constraint(
startAlign=optimal,
endAlign=optimal,
startRange=parted.Geometry(
device=device,
start=geometry.end,
end=geometry.end + parted.sizeToSectors(16, "MiB", device.sectorSize)),
endRange=parted.Geometry(
device=device,
start=geometry.end + parted.sizeToSectors(4, "GiB", device.sectorSize),
end=geometry.end + parted.sizeToSectors(4.2, "GiB", device.sectorSize)),
minSize=parted.sizeToSectors(4, "GiB", device.sectorSize),
maxSize=parted.sizeToSectors(4.2, "GiB", device.sectorSize))
geometry = parted.Geometry(
device,
start=geometry.start,
length=parted.sizeToSectors(4, "GiB", device.sectorSize),
)
geometry = constraint.solveNearest(geometry)
rootfs = parted.Partition(
disk=disk, type=parted.PARTITION_NORMAL, fs=parted.FileSystem(type='ext4', geometry=geometry),
geometry=geometry)
disk.addPartition(partition=rootfs, constraint=constraint)
# Add media partition on the rest of the disk
constraint = parted.Constraint(
startAlign=optimal,
endAlign=optimal,
startRange=parted.Geometry(
device=device,
start=geometry.end,
end=geometry.end + parted.sizeToSectors(16, "MiB", device.sectorSize)),
endRange=parted.Geometry(
device=device,
start=geometry.end + parted.sizeToSectors(16, "MiB", device.sectorSize),
end=disk.maxPartitionLength),
minSize=parted.sizeToSectors(4, "GiB", device.sectorSize),
maxSize=disk.maxPartitionLength)
geometry = constraint.solveMax()
# Create media partition
media = parted.Partition(
disk=disk, type=parted.PARTITION_NORMAL,
geometry=geometry)
disk.addPartition(partition=media, constraint=constraint)
disk.commit()
time.sleep(0.5)
# Fix disk identifier to match what is in cmdline.txt
with open(dev["path"], "r+b") as fd:
buf = bytearray(512)
fd.readinto(buf)
buf[0x1B8] = 0x13
buf[0x1B9] = 0x6e
buf[0x1BA] = 0x58
buf[0x1BB] = 0x6c
fd.seek(0)
fd.write(buf)
time.sleep(0.5)
# Format boot partition with 'boot' label
run(["mkfs.fat", "-F", "32", "-n", "boot", disk.partitions[0].path])
# Format rootfs partition with 'rootfs' label
run(["mkfs.ext4", "-F", "-L", "rootfs", "-O", "^64bit,^huge_file,^metadata_csum", disk.partitions[1].path])
# Format exfatfs partition with 'media' label
run(["mkexfatfs", "-n", "media", disk.partitions[2].path])
def create_partitions(self):
"""This method creates the partition table and the different partitions
in the loopback device. It first read the device definition, then iterate
the list of partitions.
Device operation are done using the pyparted library.
"""
#TODO cleanup method to remove loopback
# Output current task to logs
logging.info(
"Creating the partitions in the image mounted in loopback")
# Retrieve the partition type to create
if Key.LABEL.value not in self.project.image[Key.DEVICES.value]:
self.project.logging.warning(
"Partition table label is not defined, defaulting to dos.")
label = "msdos"
else:
label = self.project.image[Key.DEVICES.value][Key.LABEL.value]
# Check that the value is in the list of valid values
if label not in "aix" "amiga" "bsd" "dvh" "gpt" "loop" "mac" "msdos" "pc98" "sun":
self.project.logging.critical("Unknown partition label '" + label +
"' . Aborting")
exit(1)
else:
self.project.logging.debug("Using partition label '" + label + "'")
# Retrieve the partition alignment
if Key.ALIGNMENT.value not in self.project.image[Key.DEVICES.value]:
self.project.logging.warning(
"Partition alignment is not defined, defaulting to none.")
alignment = "none"
else:
alignment = self.project.image[Key.DEVICES.value][
Key.ALIGNMENT.value]
# TODO : handle partition alignment
# Check that the value is in the list of valid values
# if alignment == "none":
# parted_alignment = None
# elif alignment == "optimal":
# parted_alignment = parted.OPTIMAL
# elif alignment == "cylinder":
# parted_alignment = cylinder
# elif alignment == "minimal":
# parted_alignment = minimal
# else:
# self.project.logging.critical("Unknown partition alignment '" + alignment + "' . Aborting")
# exit(1)
self.project.logging.debug("Using partition alignment '" + alignment +
"'")
# Create the partition tabl on the device
device = parted.getDevice(self.loopback_device)
# Create a new disk object
disk = parted.freshDisk(device, label)
# Check that there is a partition table inthe configuration file. If not it will fail later,
# thus better fail now.
if Key.PARTITIONS.value not in self.project.image[Key.DEVICES.value]:
self.project.logging.error(
"Partition table is not defined, nothing to do. Aborting")
exit(1)
# Nox iterate the partitiontables and create them
for partition in self.project.image[Key.DEVICES.value][
Key.PARTITIONS.value]:
# Retrieve the partition name
if Key.NAME.value in partition:
part_name = partition[Key.NAME.value]
else:
part_name = ""
self.project.logging.debug("Partition name => '" + part_name +
"'")
# Retrieve the partition type
if Key.TYPE.value in partition:
part_type = partition[Key.TYPE.value]
else:
part_type = "primary"
# Check that the partition type is valid and convert in parted "define"
if part_type == "primary":
parted_type = parted.PARTITION_NORMAL
elif part_type == "extended":
parted_type = parted.PARTITION_EXTENDED
elif part_type == "logical":
parted_type = parted.PARTITION_LOGICAL
else:
self.project.logging.critical("Unknown partition type '" +
part_type + "' . Aborting")
exit(1)
self.project.logging.debug("Partition type => '" + part_type +
"'")
# Retrieve the partition size
if Key.SIZE.value not in partition:
self.project.logging.critical(
"Partition size is not defined. Aborting")
exit(1)
else:
# Retrieve the value and control it is an integer
try:
part_size = int(partition[Key.SIZE.value])
except ValueError:
self.project.logging.critical(
"Partition size is not a number : " +
partition[Key.SIZE.value])
exit(1)
self.project.logging.debug("Partition size => '" + str(part_size) +
"'")
# Retrieve the partition unit
if Key.UNIT.value not in partition:
self.project.logging.warning(
"Partition size unit is not defined, defaultig to MB.")
part_unit = "MB"
else:
part_unit = partition[Key.UNIT.value]
# Compute the block size to use based on the unit
if part_unit not in "s" "B" "KB" "KiB" "MB" "MiB" "GB" "GiB" "TB" "TiB":
self.project.logging.critical("Unknwon unit '" + part_unit +
"' . Aborting")
exit(1)
else:
self.project.logging.debug("Partition unit => '" + part_unit +
"'")
# Retrieve the partition start sector
if Key.START_SECTOR.value not in partition:
self.project.logging.warning(
"Partition start_sector is not defined. " +
"Using next available in sequence")
part_start_sector = -1
else:
# Retrieve the value and control it is an integer
try:
part_start_sector = int(partition[Key.START_SECTOR.value])
except ValueError:
self.project.logging.critical(
"Partition start_sector is not a number : " +
partition[Key.START_SECTOR.value])
exit(1)
self.project.logging.debug("Partition start sector => '" +
str(part_start_sector) + "'")
# Retrieve the partition flags
if Key.FLAGS.value not in partition:
self.project.logging.debug(
"Partition flags are not defined. Skipping...")
part_flags = None
else:
part_flags = partition[Key.FLAGS.value]
self.project.logging.debug("Partition flags => '" +
part_flags + "'")
# Retrieve the partition file system type
if Key.FILESYSTEM.value not in partition:
self.project.logging.debug(
"File system to create on the partition is not defined.")
part_filesystem = None
else:
part_filesystem = partition[Key.FILESYSTEM.value].lower()
# Check that the value is in the list of valid values
if part_filesystem not in parted.fileSystemType:
self.project.logging.critical("Unknown filesystem type '" +
part_filesystem +
"' . Aborting")
exit(1)
else:
self.project.logging.debug("Filesystem type => '" +
part_filesystem + "'")
# Retrieve the partition format flag
if Key.FORMAT.value not in partition:
self.project.logging.debug(
"File system format flag is not defined. Defaulting to True"
)
part_format = True
else:
part_format = partition[Key.FORMAT.value]
self.project.logging.debug("File system format flag => '" +
str(part_format) + "'")
#
# All information have been parsed,now let's create the partition in the loopback device
#
# Compute the sector count based on size and unit. Need for parted
sector_count = parted.sizeToSectors(part_size, part_unit,
device.sectorSize)
# Compute the geometry for this device
geometry = parted.Geometry(start=part_start_sector,
length=sector_count,
device=device)
# Create the arted filesystem object
filesys = parted.FileSystem(type=part_filesystem,
geometry=geometry)
# Create the partition object in the loopback device
new_partition = parted.Partition(disk=disk,
type=parted_type,
geometry=geometry,
fs=filesys)
# Create the constraint object for alignment, etc.
# constraint = parted.Constraint(startAlign=parted_alignment, endAlign=parted_alignment, \
# startRange=start, endRange=end, minSize=min_size, maxSize=max_size)
constraint = parted.Constraint(exactGeom=new_partition.geometry)
# Add the partition to the disk
disk.addPartition(partition=new_partition, constraint=constraint)
# Make modification persistent to disk
disk.commit()
def run(self):
global name_to_status
if '/dev/sda' in self.mountpoint:
name_to_status[self.namedport] = self.mountpoint + ": Refusing to operate on /dev/sda. Burner script error"
return # refuse to run a burn thread on the root partition
if not self.mountpoint.startswith('/dev/sd'):
name_to_status[self.namedport] = self.mountpoint + ": Invalid mountpoint. Burning script error"
sd = parted.getDevice(self.mountpoint)
name_to_status[self.namedport] = self.mountpoint + ": Partitioning " + sd.model
sd.clobber()
sd_disk = parted.freshDisk(sd, 'msdos')
geometry1 = parted.Geometry(start=disk.part1.start, end=disk.part1.end, device=sd)
filesystem1 = parted.FileSystem(type=disk.part1.id, geometry=geometry1)
partition1 = parted.Partition(disk=sd_disk, type=parted.PARTITION_NORMAL, fs=filesystem1, geometry=geometry1)
sd_disk.addPartition(partition1, constraint=sd.optimalAlignedConstraint)
sd_disk.commit()
geometry2 = parted.Geometry(start=disk.part2.start, end=sd.length, device=sd)
filesystem2 = parted.FileSystem(type=disk.part2.id, geometry=geometry2)
partition2 = parted.Partition(disk=sd_disk, type=parted.PARTITION_NORMAL, fs=filesystem2, geometry=geometry2)
sd_disk.addPartition(partition2, constraint=sd.optimalAlignedConstraint)
sd_disk.commit()
# set the disk identifier by blasting in the four bytes manually...
with open(self.mountpoint, 'wb') as p:
p.seek(0x1b8)
p.write(struct.pack("<I", disk.partid))
#### PARTITION 1 COPY
name_to_status[self.namedport] = self.mountpoint + ": Copying partition 1..."
p = subprocess.Popen(["dd", "if=" + image_dir + "/part1.img", "of=" + self.mountpoint + "1", "bs=1M"], stderr=subprocess.PIPE)
for lines in p.stderr:
if 'copied' in lines.decode("utf-8"):
name_to_status[self.namedport] = self.mountpoint + ": " + lines.decode("utf-8")
p.wait()
if p.returncode != 0:
name_to_status[self.namedport] = self.mountpoint + " ERROR: " + lines.decode("utf-8")
return
time.sleep(3)
##### PARTITION 2 COPY
name_to_status[self.namedport] = self.mountpoint + ": Copying partition 2..."
p = subprocess.Popen(["dd", "if=" + image_dir + "/part2.ext4", "of=" + self.mountpoint + "2", "bs=1M"], stderr=subprocess.PIPE)
for lines in p.stderr:
if 'copied' in lines.decode("utf-8"):
name_to_status[self.namedport] = self.mountpoint + ": " + lines.decode("utf-8")
p.wait()
if p.returncode != 0:
name_to_status[self.namedport] = self.mountpoint + " ERROR: " + lines.decode("utf-8")
return
time.sleep(3)
##### FSCK PARTITION 2 -- allow a couple iterations to get a "clean" fsck
returncode = 1
iters = 0
while returncode != 0 and iters < 4:
name_to_status[self.namedport] = self.mountpoint + ": fsck partition 2..."
p = subprocess.Popen(["e2fsck", "-y", "-f", self.mountpoint + "2"], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
for lines in p.stderr:
name_to_status[self.namedport] = self.mountpoint + ": " + lines.decode("utf-8")
p.wait()
returncode = p.returncode
iters = iters + 1
if iters >= 3:
name_to_status[self.namedport] = self.mountpoint + " ERROR: " + lines.decode("utf-8")
return
##### RESIZE PARTITION 2
name_to_status[self.namedport] = self.mountpoint + ": resize partition 2..."
p = subprocess.Popen(["resize2fs", self.mountpoint + "2"], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
for lines in p.stderr:
name_to_status[self.namedport] = self.mountpoint + ": " + lines.decode("utf-8")
p.wait()
if p.returncode != 0:
name_to_status[self.namedport] = self.mountpoint + " ERROR: " + lines.decode("utf-8")
return
##### SET BLKID PARTITION 2 -- actually, this can be done in the source image!
#name_to_status[self.namedport] = self.mountpoint + ": set blkid partition 2..."
#p = subprocess.Popen(["tune2fs", self.mountpoint + "2", "-U", disk.uuid], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
#for lines in p.stderr:
# name_to_status[self.namedport] = self.mountpoint + ": " + lines.decode("utf-8")
#p.wait()
#if p.returncode != 0:
# name_to_status[self.namedport] = self.mountpoint + " ERROR: " + lines.decode("utf-8")
# return
##### SET PASS STATE
name_to_status[self.namedport] = self.mountpoint + " FINISHED"
return
def main():
parser = argparse.ArgumentParser()
parser.add_argument('name', help='name of the disk image to create')
parser.add_argument(
'--path',
help='path to folder containing rootfs to be copied into disk image',
type=str,
default='/tmp/multistrap')
args = parser.parse_args()
# determine size of rootfs folder
result = subprocess.run('du --null -sm {}'.format(args.path).split(),
check=True,
stdout=subprocess.PIPE,
encoding='UTF-8')
rootsize = int(result.stdout.split()
[0]) # numeric size is at the beginning of the output line
print('Found rootfs folder at {} with size {} MB'.format(
args.path, rootsize))
# create disk image file
print('Creating empty disk image file...')
imgpath = '/tmp/' + args.name
image = open(imgpath, 'w')
size = rootsize + bootsize + extraspace
image.seek((size * 10**6) - 1) # subtract one to align to 512-byte sector
image.write('a')
image.close()
# setup loop device
print('Setting up loopback device...')
result = subprocess.run('losetup -f --show {}'.format(imgpath).split(),
check=True,
stdout=subprocess.PIPE,
encoding='UTF-8')
devpath = result.stdout.strip(
) # output from losetup gives path to loopback device
print("loopback device created at {}".format(devpath))
# partition disk image
print('Partitioning disk image...')
# create boot partition
print('Creating boot partition...')
device = parted.getDevice(devpath)
disk = parted.freshDisk(device, 'gpt')
bootPartSize = bootsize * 10**6 # boot partiton is 128MB
# convert from bytes to sectors
bootlen = int(bootPartSize / device.sectorSize)
bootgeom = parted.Geometry(device=device, start=1, length=bootlen)
bootfs = parted.FileSystem(type='fat32', geometry=bootgeom)
bootpart = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=bootfs,
geometry=bootgeom)
bootpart.name = 'boot'
disk.addPartition(partition=bootpart,
constraint=device.optimalAlignedConstraint)
disk.commit()
# create root partition
print('Creating root partition')
rootgeom = disk.getFreeSpaceRegions()[-1]
rootfs = parted.FileSystem(type='ext4', geometry=rootgeom)
rootpart = parted.Partition(disk=disk,
type=parted.PARTITION_NORMAL,
fs=rootfs,
geometry=rootgeom)
rootpart.name = 'Debian'
disk.addPartition(partition=rootpart,
constraint=device.optimalAlignedConstraint)
disk.commit()
# delete loop device and recreate with partitions
print('Removing loopback device and recreating with partition support...')
result = subprocess.run('losetup -d {}'.format(devpath).split())
result = subprocess.run('losetup -f --show -P {}'.format(imgpath).split(),
check=True,
stdout=subprocess.PIPE,
encoding='UTF-8')
devpath = result.stdout.strip(
) # output from losetup gives path to loopback device
print("loopback device created at {}".format(devpath))
# format partitions
print('Formatting partitions...')
subprocess.run('mkfs.fat -F 32 {}p1'.format(devpath).split(),
check=True) # format first partition to FAT32
subprocess.run('mkfs.ext4 {}p2'.format(devpath).split(),
check=True) # format second parition to ext4
# mount filesystems and copy files
# delete loop device
print('Cleaning up loopback device...')
result = subprocess.run('losetup -d {}'.format(devpath).split())
def editPartition(self, targetPartition, deltaStart, deltaEnd, fstype, fslabel, unit='MiB', formatPartition=True, safeDataThroughTmp=False):
log.info("editPartition: Editing partition " + targetPartition.path + ". Start = Start + (" + str(deltaStart) + "). End = End + (" + str(deltaEnd) + ").")
# Backup data to a directory in tmp
if safeDataThroughTmp:
# Make sure targetPartition is mounted in mountpoint
if isMounted(targetPartition.path):
mountpoint = getMountpoint(targetPartition.path)
else:
try:
mountpoint = tempfile.mkdtemp(prefix='resinhup-', dir='/tmp')
except:
log.error("editPartition: Failed to create temporary mountpoint.")
return False
if not mount(targetPartition.path, mountpoint):
log.error("editPartition: Failed to mount %s in %s." %(targetPartition.path, mountpoint))
return False
# Backup files to a directory in /tmp
try:
backupdir = tempfile.mkdtemp(prefix='resinhup-', dir='/tmp')
except:
log.error("editPartition: Failed to create temporary backup directory.")
return False
if not safeCopy(mountpoint, backupdir):
log.error("editPartition: Could not backup files from %s to %s." %(mountpoint, backupdir))
# Make sure that partition is not mounted
if isMounted(targetPartition.path):
if not umount(targetPartition.path):
return False
# Committing partition changes to OS needs udev running
startUdevDaemon()
# Calculate the new geometry
geometry = targetPartition.geometry
geometry.start += parted.sizeToSectors(deltaStart, unit, self.device.sectorSize)
geometry.end += parted.sizeToSectors(deltaEnd, unit, self.device.sectorSize)
# Destroy the partition and recreate it with the new geometry
self.disk.deletePartition(targetPartition)
filesystem = parted.FileSystem(type=fstype, geometry=geometry)
partition = parted.Partition(disk=self.disk, type=parted.PARTITION_NORMAL, fs=filesystem, geometry=geometry)
self.disk.addPartition(partition=partition, constraint=self.device.optimalAlignedConstraint)
self.disk.commit()
# Format filesystem
if formatPartition:
if (fstype == 'ext3') or (fstype == 'ext4'):
if not formatEXT3(partition.path, fslabel):
log.error("movePartition: Could not format " + partition.path + " as ext3.")
return False
elif fstype == 'fat32':
if not formatVFAT(partition.path, fslabel):
log.error("movePartition: Could not format " + partition.path + " as vfat.")
return False
else:
log.error("movePartition: Format of " + fstype + " is not implemented.")
return False
# Restore data in targetPartition
if safeDataThroughTmp:
# Make sure targetPartition is mounted in mountpoint
if isMounted(targetPartition.path):
log.error("editPartition: Something is wrong. %s should not be mounted." % targetPartition.path)
return False
else:
if not mount(targetPartition.path, mountpoint):
log.error("editPartition: Failed to mount %s in %s." %(targetPartition.path, mountpoint))
return False
# Copy back the data
if not safeCopy(backupdir, mountpoint, sync=True):
log.error("editPartition: Could not restore files from %s to %s." %(backupdir, mountpoint))
# Cleanup temporary backup files
shutil.rmtree(backupdir)
return True
def partitionParted(self):
"""Build partitions according to the partition spec.
XXX roth -- hopefully the GPT labels specified here
work correctly (that is, are ignored) on an msdos label
"""
constraint = self.partedDevice.optimalAlignedConstraint
# default partition layout constraint
devices = {}
def _u2s(sz, u):
"""Convert to units of logical sectors."""
bsz = sz * u
bsz = bsz + self.partedDevice.sectorSize - 1
return bsz / self.partedDevice.sectorSize
def _align(spos):
"""Align this sector number."""
sz = self.partedDevice.sectorSize
psz = self.partedDevice.physicalSectorSize
if type(psz) != int: return spos
if psz <= sz: return spos
if (psz % sz) != 0: return spos
if psz > 1048576: return spos
stride = psz / sz
off = spos % stride
off = stride - off
off = off % stride
spos += off
return spos
UNITS = {
'GiB' : 1024 * 1024 * 1024,
'G' : 1000 * 1000 * 1000,
'MiB' : 1024 * 1024,
'M' : 1000 * 1000,
'KiB' : 1024,
'K' : 1000,
}
for part in self.im.platformConf['installer']:
label, partData = list(part.items())[0]
if type(partData) == dict:
sz, fmt = partData['='], partData.get('format', 'ext4')
else:
sz, fmt = partData, 'ext4'
cnt = None
nextBlock = self.nextBlock or 1
minpart = self.minpart or 1
for ul, ub in UNITS.items():
if sz.endswith(ul):
cnt = _u2s(int(sz[:-len(ul)], 10), ub)
break
if sz == '100%':
cnt = self.partedDevice.getLength() - nextBlock
if cnt is None:
self.log.error("invalid size (no units) for %s: %s",
part, sz)
return 1
start = _align(nextBlock)
end = start + cnt - 1
if end <= self.partedDevice.getLength():
self.log.info("Allocating %d sectors for %s",
cnt, label)
else:
self.log.warn("%s: start sector %d, end sector %d, max %d",
label, start, end,
self.partedDevice.getLength())
self.log.error("invalid partition %s [%s] (too big)",
label, sz)
return 1
geom = parted.Geometry(device=self.partedDevice,
start=start, length=end-start+1)
fs = parted.FileSystem(type=fmt, geometry=geom)
part = parted.Partition(disk=self.partedDisk,
type=parted.PARTITION_NORMAL,
fs=fs,
geometry=geom)
if self.partedDisk.type == 'gpt':
part.getPedPartition().set_name(label)
self.partedDisk.addPartition(part, constraint=constraint)
self.partedDisk.commit()
self.check_call(('partprobe', self.device,))
if fmt == 'raw':
self.log.info("Leaving %s (%s) unformatted (raw)",
part.path, label)
else:
self.log.info("Formatting %s (%s) as %s",
part.path, label, fmt)
if fmt == 'msdos':
self.mkdosfs(part.path, label=label)
elif fmt == 'ext4':
self.mke4fs(part.path, label=label, huge_file=False)
elif fmt == 'ext2':
self.mke2fs(part.path, label=label)
else:
self.mkfs(part.path, fstype=fmt)
self.nextBlock, self.minpart = end+1, minpart+1
devices[label] = part.path
if label == 'ONL-CONFIG' and self.configArchive is not None:
self.restoreConfig(part.path)
self.blkidParts = BlkidParser(log=self.log.getChild("blkid"))
# re-read the partitions
return 0
for d in dsks:
free=dsks_free[d]
if free < sizeperdisk:
print "Please add {0:10.2} MiB to disk {1}".format( float(sizeperdisk-free)/2**20,d)
toGrow+=1
if toGrow>0:
exit(1)
#Voeg evt partities toe
for path, dsk in VG.disks.items():
if path in dsks:
if dsk.primaryPartitionCount = dsk.maxPrimaryPartitionCount:
continue
freeGeo=dsk.getFreeSpacePartitions()[-1].geometry
if freeGeo.start >= dsk.getPrimaryPartitions()[-1].geometry.end:
filesystem = parted.FileSystem(type='ext3', geometry=geometry)
partition = parted.Partition(disk=disk, type=parted.PARTITION_NORMAL, fs=filesystem, geometry=freeGeo)
disk.addPartition(partition=partition, constraint=dev.optimalAlignedConstraint)
partition.setFlag(parted.PARTITION_LVM)
disk.commit()
subprocess.check_call(['pvcreate',partition.path],stdout=stdout, stderr=stderr)
subprocess.check_call(['vgextend',options.VG,partition.path],stdout=stdout, stderr=stderr)
#Opnieuw VG info inlezen.
VGs=initVGs()
VG=VGs[options.VG]
LV=VG[options.LV]
lastseg=LV[sorted(LV.keys())[-1]]
dsks=[pseg.pv.disk.device.path for pseg in lastseg]
