Revision 333ff548 image_creator/disk.py
| b/image_creator/disk.py | ||
|---|---|---|
| 51 | 51 |
size = blockdev('--getsize', sourcedev)
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| 52 | 52 |
cowfd, cow = tempfile.mkstemp() |
| 53 | 53 |
self._add_cleanup(os.unlink, cow) |
| 54 |
dd('if=/dev/zero', 'of=%s' % cow, 'count=%d' % (1024*1024))#(int(size)/4))
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# Create 1G cow file |
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dd('if=/dev/null', 'of=%s' % cow, 'bs=1k' ,'seek=%d' % (1024*1024))
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| 55 | 56 |
cowdev = self._losetup(cow) |
| 56 | 57 |
|
| 57 | 58 |
snapshot = uuid.uuid4().hex |
| ... | ... | |
| 70 | 71 |
|
| 71 | 72 |
class DiskDevice(object): |
| 72 | 73 |
|
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def __init__(self, disk, device): |
|
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def __init__(self, disk, device, bootable = True):
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|
| 74 | 75 |
self.disk = disk |
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self.dev = device |
|
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self.device = device |
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self.is_bootable = bootable |
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| 76 | 78 |
self.partitions_mapped = False |
| 77 | 79 |
self.magic_number = uuid.uuid4().hex |
| 78 | 80 |
|
| 79 | 81 |
def list_partitions(self): |
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if not self.partitions_mapped: |
|
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kpartx("-a", "-p", self.magic_number, self.dev)
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|
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self.disk._cleanup_jobs.append(kpartx, "-d", "-p", |
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| 85 |
self.magic_number, self.dev) |
|
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self.partitions_mapped = True |
|
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|
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| 80 | 88 |
output = kpartx("-l", "-p", self.magic_number, self.dev)
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| 81 | 89 |
return [ "/dev/mapper/%s" % x for x in |
| 82 | 90 |
re.findall('^\S+', str(output), flags=re.MULTILINE)]
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| 83 | 91 |
|
| 84 | 92 |
def mount(self, partition): |
| 85 | 93 |
if not self.partitions_mapped: |
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self.list_partitions() |
|
| 86 | 95 |
kpartx("-a", "-p", self.magic_number, self.dev)
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| 87 | 96 |
self.disk._cleanup_jobs.append(kpartx, "-d", "-p", |
| 88 | 97 |
self.magic_number, self.dev) |
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