bootstrap-vz/base/fs/partitions/base.py
2014-02-27 23:02:58 +01:00

59 lines
1.9 KiB
Python

from abstract import AbstractPartition
class BasePartition(AbstractPartition):
events = [{'name': 'create', 'src': 'nonexistent', 'dst': 'unmapped'},
{'name': 'map', 'src': 'unmapped', 'dst': 'mapped'},
{'name': 'format', 'src': 'mapped', 'dst': 'formatted'},
{'name': 'mount', 'src': 'formatted', 'dst': 'mounted'},
{'name': 'unmount', 'src': 'mounted', 'dst': 'formatted'},
{'name': 'unmap', 'src': 'formatted', 'dst': 'unmapped_fmt'},
{'name': 'map', 'src': 'unmapped_fmt', 'dst': 'formatted'},
{'name': 'unmap', 'src': 'mapped', 'dst': 'unmapped'},
]
def __init__(self, size, filesystem, format_command, previous):
self.previous = previous
from common.bytes import Bytes
self.offset = Bytes(0)
self.flags = []
super(BasePartition, self).__init__(size, filesystem, format_command)
def create(self, volume):
self.fsm.create(volume=volume)
def get_index(self):
if self.previous is None:
return 1
else:
return self.previous.get_index() + 1
def get_start(self):
if self.previous is None:
return self.offset
else:
return self.previous.get_end() + self.offset
def map(self, device_path):
self.fsm.map(device_path=device_path)
def _before_create(self, e):
from common.tools import log_check_call
create_command = ('mkpart primary {start} {end}'
.format(start=str(self.get_start()),
end=str(self.get_end())))
log_check_call(['/sbin/parted', '--script', '--align', 'none', e.volume.device_path,
'--', create_command])
for flag in self.flags:
log_check_call(['/sbin/parted', '--script', e.volume.device_path,
'--', ('set {idx} {flag} on'
.format(idx=str(self.get_index()), flag=flag))])
def _before_map(self, e):
self.device_path = e.device_path
def _before_unmap(self, e):
self.device_path = None