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60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
from base import Task
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from common import phases
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from filesystem import UnmountVolume
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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='+str(info.manifest.volume['size']), 'count=0'])
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class CreateQemuImg(Task):
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description = 'Creating a loopback volume with qemu'
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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(['/usr/bin/qemu-img', 'create', '-f', 'raw',
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info.loopback_file, str(info.manifest.volume['size'])+'M'])
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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, CreateQemuImg]
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def run(self, info):
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info.bootstrap_device = {}
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command = ['/sbin/losetup', '--show', '--find', info.loopback_file]
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[info.bootstrap_device['path']] = log_check_call(command)
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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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after = [UnmountVolume]
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def run(self, info):
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log_check_call(['/sbin/losetup', '--detach', 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.loopback_file)
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del info.loopback_file
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