def create_volume(self, vol, snapshot_id=None):
'''
Creates a volume and attaches it to this instance
If given a snapshot id, populates from the snapshot, else
formats the volume first
Subsequently mounts the volume to the given mount point
'''
# catch this at a higher level if we want to skip
if os.path.exists(vol.instance_device):
error_message = 'Device %s already exists' % vol.instance_device
error_message += '\n run with --ignore-mounted to proceed'
raise exceptions.DeviceAlreadyExists(error_message)
# we always create a new volume when mounting upon boot
# load from a snapshot if we have one
log_message = 'Creating a volume of size %s in zone %s from snapshot %s'
logger.info(log_message, vol.size, self.availability_zone, snapshot_id)
# tell boto about the iops if we want them :)
kwargs = dict()
if vol.iops:
kwargs['iops'] = vol.iops
boto_volume = self.con.create_volume(size=vol.size,
zone=self.availability_zone,
snapshot=snapshot_id,
volume_type=vol.volume_type,
**kwargs)
# tag the volume
tags = self.get_tags_for_volume(vol)
logger.info('tagging volume %s with tags %s', boto_volume.id, tags)
add_tags(boto_volume, tags)
logger.info('tags added succesfully')
return boto_volume
def make_snapshot(self, vol):
# get a snapshot name
description = self.get_snapshot_description(vol)
logger.info(
'preparing to create a snapshot with description %s', description)
# find the volume ID for this device
volume_id = self.get_volume_id(vol)
# get the tags, note that these are used for finding the right snapshot
tags = self.get_tags_for_volume(vol)
# Don't freeze more than we need to
with vol.freeze():
logger.info('creating snapshot')
snapshot = self.con.create_snapshot(
volume_id, description=description)
logger.info('succesfully created snapshot with id %s', snapshot.id)
# Add tags
logger.info('tagging snapshot %s with tags %s', snapshot.id, tags)
add_tags(snapshot, tags)
return snapshot
def make_snapshot(self, vol):
# get a snapshot name
description = self.get_snapshot_description(vol)
logger.info('preparing to create a snapshot with description %s',
description)
# find the volume ID for this device
volume_id = self.get_volume_id(vol)
# get the tags, note that these are used for finding the right snapshot
tags = self.get_tags_for_volume(vol)
# Don't freeze more than we need to
with vol.freeze():
logger.info('creating snapshot')
snapshot = self.con.create_snapshot(volume_id,
description=description)
logger.info('succesfully created snapshot with id %s', snapshot.id)
# Add tags
logger.info('tagging snapshot %s with tags %s', snapshot.id, tags)
add_tags(snapshot, tags)
return snapshot
def create_volume(self, vol, snapshot_id=None):
'''
Creates a volume and attaches it to this instance
If given a snapshot id, populates from the snapshot, else
formats the volume first
Subsequently mounts the volume to the given mount point
'''
# catch this at a higher level if we want to skip
if os.path.exists(vol.instance_device):
error_message = 'Device %s already exists' % vol.instance_device
error_message += '\n run with --ignore-mounted to proceed'
raise exceptions.DeviceAlreadyExists(error_message)
# we always create a new volume when mounting upon boot
# load from a snapshot if we have one
log_message = 'Creating a volume of size %s in zone %s from snapshot %s'
logger.info(log_message, vol.size, self.availability_zone, snapshot_id)
# tell boto about the iops if we want them :)
kwargs = dict()
if vol.iops:
kwargs['iops'] = vol.iops
boto_volume = self.con.create_volume(size=vol.size,
zone=self.availability_zone,
snapshot=snapshot_id,
volume_type=vol.volume_type,
**kwargs
)
# tag the volume
tags = self.get_tags_for_volume(vol)
logger.info('tagging volume %s with tags %s', boto_volume.id, tags)
add_tags(boto_volume, tags)
logger.info('tags added succesfully')
return boto_volume
