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https://github.com/kevingruesser/bootstrap-vz.git
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ff7c04c120
MAJOR refactor. The volume is now abstracted into a model along with a partitionmap and partitions. Volumes and partitions are now controlled via an FSM to ensure that commands are called in the proper sequence. GRUB can now be installed properly onto loop devices by using dmsetup to fake a proper harddisk.
56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
from base.fs.volume import Volume
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from base.fs.exceptions import VolumeError
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import time
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class EBSVolume(Volume):
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volume = None
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def create(self, conn, zone):
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super(EBSVolume, self).create(self)
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import math
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# TODO: Warn if volume size is not a multiple of 1024
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size = int(math.ceil(self.partition_map.get_volume_size() / 1024))
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self.volume = conn.create_volume(size, zone)
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while self.volume.volume_state() != 'available':
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time.sleep(5)
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self.volume.update()
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self.created = True
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def attach(self, instance_id):
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super(EBSVolume, self).attach(self)
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import os.path
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import string
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for letter in string.ascii_lowercase:
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dev_path = os.path.join('/dev', 'xvd' + letter)
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if not os.path.exists(dev_path):
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self.device_path = dev_path
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self.ec2_device_path = os.path.join('/dev', 'sd' + letter)
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break
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if self.device_path is None:
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raise VolumeError('Unable to find a free block device path for mounting the bootstrap volume')
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self.volume.attach(instance_id, self.ec2_device_path)
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while self.volume.attachment_state() != 'attached':
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time.sleep(2)
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self.volume.update()
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def detach(self):
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super(EBSVolume, self).detach(self)
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self.volume.detach()
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while self.volume.attachment_state() is not None:
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time.sleep(2)
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self.volume.update()
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def delete(self):
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super(EBSVolume, self).delete(self)
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self.volume.delete()
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def snapshot(self):
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snapshot = self.volume.create_snapshot()
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while snapshot.status != 'completed':
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time.sleep(2)
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snapshot.update()
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return snapshot
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