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https://github.com/kevingruesser/bootstrap-vz.git
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a840dc28f3
automatically from the first available partition. There is no need to fiddle with sizes while keeping the offsets in mind any longer. Introduced Bytes() class which makes it a lot easier to handle size units.
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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def create(self, conn, zone):
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self.fsm.create(connection=conn, zone=zone)
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def _before_create(self, e):
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conn = e.connection
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zone = e.zone
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size = self.size.get_qty_in('GiB')
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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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def attach(self, instance_id):
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self.fsm.attach(instance_id=instance_id)
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def _before_attach(self, e):
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instance_id = e.instance_id
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import os.path
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import string
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for letter in string.ascii_lowercase[5:]:
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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 _before_detach(self, e):
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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 _before_delete(self, e):
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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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