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from bootstrapvz.base.fs.volume import Volume
from bootstrapvz.common.tools import log_check_call
import os
class LogicalVolume(Volume):
def __init__(self, partitionmap):
super(LogicalVolume, self).__init__(partitionmap)
self.vg = ''
self.lv = ''
def create(self, volumegroup, logicalvolume):
self.vg = volumegroup
self.lv = logicalvolume
image_path = os.path.join(os.sep, 'dev', self.vg, self.lv)
self.fsm.create(image_path=image_path)
def _before_create(self, e):
self.image_path = e.image_path
lv_size = str(self.size.bytes.get_qty_in('MiB'))
log_check_call(['lvcreate', '--size', '{mib}M'.format(mib=lv_size),
'--name', self.lv, self.vg])
def _before_attach(self, e):
log_check_call(['lvchange', '--activate', 'y', self.image_path])
[self.loop_device_path] = log_check_call(['losetup', '--show', '--find', '--partscan', self.image_path])
self.device_path = self.loop_device_path
def _before_detach(self, e):
log_check_call(['losetup', '--detach', self.loop_device_path])
log_check_call(['lvchange', '--activate', 'n', self.image_path])
del self.loop_device_path
self.device_path = None
def delete(self):
log_check_call(['lvremove', '-f', self.image_path])
del self.image_path
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