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411578a498
Grub install fails when in a chrooted environment, it has nothing to do with the volume being a loopback volume
33 lines
855 B
Python
33 lines
855 B
Python
from contextlib import contextmanager
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def get_partitions():
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import re
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regexp = re.compile('^ *(?P<major>\d+) *(?P<minor>\d+) *(?P<num_blks>\d+) (?P<dev_name>\S+)$')
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matches = {}
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path = '/proc/partitions'
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with open(path) as partitions:
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next(partitions)
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next(partitions)
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for line in partitions:
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match = regexp.match(line)
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if match is None:
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raise RuntimeError('Unable to parse {line} in {path}'.format(line=line, path=path))
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matches[match.group('dev_name')] = match.groupdict()
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return matches
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@contextmanager
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def unmounted(volume):
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from bootstrapvz.base.fs.partitionmaps.none import NoPartitions
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p_map = volume.partition_map
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root_dir = p_map.root.mount_dir
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p_map.root.unmount()
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if not isinstance(p_map, NoPartitions):
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p_map.unmap(volume)
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yield
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p_map.map(volume)
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else:
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yield
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p_map.root.mount(destination=root_dir)
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