import parted
+from image_creator.rsync import Rsync
from image_creator.util import get_command
from image_creator.util import FatalError
losetup = get_command('losetup')
mount = get_command('mount')
umount = get_command('umount')
+blkid = get_command('blkid')
MKFS_OPTS = {
'ext2': ['-F'],
if not os.path.isfile(f):
raise FatalError("Unable to open: `%s'. File is missing." % f)
- FileSystemEntry = namedtuple('FileSystemEntry',
+ FileSystemTableEntry = namedtuple('FileSystemTableEntry',
'dev mpoint fs opts freq passno')
with open(f) as table:
for line in iter(table):
entry = line.split('#')[0].strip().split()
if len(entry) != 6:
continue
- yield FileSystemEntry(*entry)
+ yield FileSystemTableEntry(*entry)
def _get_root_partition(self):
for entry in self._read_fstable('/etc/fstab'):
mount_options = self._get_mount_options(
self.disk.getPartitionBySector(last.start).path)
- if mount_options is not None:
+ if mount_options is not None:
stat = os.statvfs(mount_options.mpoint)
# Shrink the last partition. The new size should be the size of the
# occupied blocks
# Leave 2048 blocks at the end.
new_end = new_size + 2048
-
if last.type == parted.PARTITION_LOGICAL:
# Fix the extended partition
extended = disk.getExtendedPartition()
for entry in self._read_fstable('/proc/mounts'):
if entry.mpoint.startswith(os.path.abspath(target)):
mpoints.append(entry.mpoint)
-
+
mpoints.sort()
for mpoint in reversed(mpoints):
umount(mpoint)
+ def _to_exclude(self):
+ excluded = ['/tmp', '/var/tmp']
+ local_filesystems = MKFS_OPTS.keys() + ['rootfs']
+ for entry in self._read_fstable('/proc/mounts'):
+ if entry.fs in local_filesystems:
+ continue
+
+ mpoint = entry.mpoint
+ if mpoint in excluded:
+ continue
+
+ descendants = filter(lambda p: p.startswith(mpoint + '/'),
+ excluded)
+ if len(descendants):
+ for d in descendants:
+ excluded.remove(d)
+ excluded.append(mpoint)
+ continue
+
+ dirname = mpoint
+ basename = ''
+ found_ancestor = False
+ while dirname != '/':
+ (dirname, basename) = os.path.split(dirname)
+ if dirname in excluded:
+ found_ancestor = True
+ break
+
+ if not found_ancestor:
+ excluded.append(mpoint)
+
+ return map(lambda d: d + "/*", excluded)
+
+ def _replace_uuids(self, target, new_uuid):
+
+ files = ['/etc/fstab',
+ '/boot/grub/grub.cfg',
+ '/boot/grub/menu.lst',
+ '/boot/grub/grub.conf']
+
+ orig = dict(map(lambda p: (p.number, blkid( '-s', 'UUID', '-o',
+ 'value', p.path).stdout.strip()), self.disk.partitions))
+
+ for f in map(lambda f: target + f, files):
+
+ if not os.path.exists(f):
+ continue
+
+ with open(f, 'r') as src:
+ lines = src.readlines()
+ with open(f, 'w') as dest:
+ for line in lines:
+ for i, uuid in new_uuid.items():
+ line = re.sub(orig[i], uuid, line)
+ dest.write(line)
+
def _create_filesystems(self, image):
-
- partitions = self._get_partitions(parted.Disk(parted.Device(image)))
- filesystems = {}
+
+ filesystem = {}
for p in self.disk.partitions:
- filesystems[p.number] = self._get_mount_options(p.path)
+ filesystem[p.number] = self._get_mount_options(p.path)
- unmounted = filter(lambda p: filesystems[p.num] is None, partitions)
- mounted = filter(lambda p: filesystems[p.num] is not None, partitions)
+ partitions = self._get_partitions(parted.Disk(parted.Device(image)))
+ unmounted = filter(lambda p: filesystem[p.num] is None, partitions)
+ mounted = filter(lambda p: filesystem[p.num] is not None, partitions)
# For partitions that are not mounted right now, we can simply dd them
# into the image.
mapped = {}
try:
for p in mounted:
- i = p.num
+ i = p.num
mapped[i] = self._map_partition(loop, i, p.start, p.end)
+ new_uuid = {}
# Create the file systems
for i, dev in mapped.iteritems():
- fs = filesystems[i].fs
+ fs = filesystem[i].fs
self.out.output('Creating %s filesystem on partition %d ... ' %
(fs, i), False)
get_command('mkfs.%s' % fs)(*(MKFS_OPTS[fs] + [dev]))
self.out.success('done')
+ new_uuid[i] = blkid('-s', 'UUID', '-o', 'value', dev
+ ).stdout.strip()
target = tempfile.mkdtemp()
try:
absmpoints = self._mount(target,
- [(mapped[i], filesystems[i].mpoint) for i in mapped.keys()]
+ [(mapped[i], filesystem[i].mpoint) for i in mapped.keys()]
)
+ exclude = self._to_exclude() + [image]
+ rsync = Rsync('/', target,
+ map(lambda p: os.path.relpath(p, '/'), exclude))
+ msg = "Copying host files into the image"
+ rsync.archive().run(self.out, msg)
+
+ self._replace_uuids(target, new_uuid)
finally:
self._umount_all(target)
truncate("-s", "%d" % disk_size, image)
self._create_partition_table(image)
+
end_sector = self._shrink_partitions(image)
# Check if the available space is enough to host the image
projects / snf-image-creator / blobdiff