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https://github.com/kevingruesser/bootstrap-vz.git
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47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
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from base import Task
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from common import phases
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from common.tools import log_check_call
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class Create(Task):
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description = 'Creating a loopback volume'
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phase = phases.volume_creation
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def run(self, info):
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loopback_filename = 'loopback-{id:x}.img'.format(id=info.run_id)
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import os.path
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info.loopback_file = os.path.join(info.manifest.volume['loopback_dir'], loopback_filename)
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log_check_call(['/bin/dd',
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'if=/dev/zero', 'of='+info.loopback_file,
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'bs=1M', 'seek='+info.manifest.volume['size'], 'count=0'])
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class Attach(Task):
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description = 'Attaching the loopback volume'
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phase = phases.volume_creation
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after = [Create]
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def run(self, info):
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info.bootstrap_device = {}
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info.bootstrap_device['path'] = log_check_call(['/sbin/losetup', '--find'])
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log_check_call(['/sbin/losetup', info.bootstrap_device['path'], info.loopback_file])
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class Detach(Task):
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description = 'Detaching the loopback volume'
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phase = phases.volume_unmounting
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def run(self, info):
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log_check_call(['/sbin/losetup', '-d', info.bootstrap_device['path']])
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del info.bootstrap_device
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class Delete(Task):
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description = 'Deleting the loopback volume'
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phase = phases.cleaning
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def run(self, info):
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from os import remove
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remove(info.bootstrap_device['path'])
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del info.loopback_file
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