def detach_volume(self,
context,
connection_info,
instance,
mountpoint,
encryption=None):
"""Detach the volume attached to the instance.
:param context: security context
:param connection_info: Volume connection information from the block
device mapping
:param instance: nova.objects.instance.Instance
:param mountpoint: Unused
:param encryption: Unused
"""
self._log_operation('detach_volume', instance)
# Define the flow
flow = tf_lf.Flow("detach_volume")
# Get a volume adapter for this volume
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
# Add a task to detach the volume
flow.add(tf_stg.DetachVolume(vol_drv))
# Run the flow
tf_base.run(flow, instance=instance)
def attach_volume(self, context, connection_info, instance, mountpoint,
disk_bus=None, device_type=None, encryption=None):
"""Attach the volume to the instance using the connection_info.
:param context: security context
:param connection_info: Volume connection information from the block
device mapping
:param instance: nova.objects.instance.Instance
:param mountpoint: Unused
:param disk_bus: Unused
:param device_type: Unused
:param encryption: Unused
"""
self._log_operation('attach_volume', instance)
# Define the flow
flow = tf_lf.Flow("attach_volume")
# Build the driver
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
# Add the volume attach to the flow.
flow.add(tf_stg.AttachVolume(vol_drv))
# Run the flow
tf_base.run(flow, instance=instance)
# The volume connector may have updated the system metadata. Save
# the instance to persist the data. Spawn/destroy auto saves instance,
# but the attach does not. Detach does not need this save - as the
# detach flows do not (currently) modify system metadata. May need
# to revise in the future as volume connectors evolve.
instance.save()
def detach_volume(self, context, connection_info, instance, mountpoint,
encryption=None):
"""Detach the volume attached to the instance.
:param context: security context
:param connection_info: Volume connection information from the block
device mapping
:param instance: nova.objects.instance.Instance
:param mountpoint: Unused
:param encryption: Unused
"""
self._log_operation('detach_volume', instance)
# Define the flow
flow = tf_lf.Flow("detach_volume")
# Get a volume adapter for this volume
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
# Add a task to detach the volume
flow.add(tf_stg.DetachVolume(vol_drv))
# Run the flow
tf_base.run(flow, instance=instance)
def attach_volume(self, context, connection_info, instance, mountpoint,
disk_bus=None, device_type=None, encryption=None):
"""Attach the volume to the instance using the connection_info.
:param context: security context
:param connection_info: Volume connection information from the block
device mapping
:param instance: nova.objects.instance.Instance
:param mountpoint: Unused
:param disk_bus: Unused
:param device_type: Unused
:param encryption: Unused
"""
self._log_operation('attach_volume', instance)
# Define the flow
flow = tf_lf.Flow("attach_volume")
# Build the driver
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
# Add the volume attach to the flow.
flow.add(tf_stg.AttachVolume(vol_drv))
# Run the flow
tf_base.run(flow, instance=instance)
# The volume connector may have updated the system metadata. Save
# the instance to persist the data. Spawn/destroy auto saves instance,
# but the attach does not. Detach does not need this save - as the
# detach flows do not (currently) modify system metadata. May need
# to revise in the future as volume connectors evolve.
instance.save()
def extend_volume(self, connection_info, instance):
"""Extend the disk attached to the instance.
:param dict connection_info: The connection for the extended volume.
:param nova.objects.instance.Instance instance:
The instance whose volume gets extended.
:return: None
"""
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
vol_drv.extend_volume()
def extend_volume(self, connection_info, instance):
"""Extend the disk attached to the instance.
:param dict connection_info: The connection for the extended volume.
:param nova.objects.instance.Instance instance:
The instance whose volume gets extended.
:return: None
"""
vol_drv = volume.build_volume_driver(
self.adapter, instance, connection_info)
vol_drv.extend_volume()
def _vol_drv_iter(self, context, instance, bdms, stg_ftsk=None):
"""Yields a bdm and volume driver.
:param context: security context
:param instance: nova.objects.instance.Instance
:param bdms: block device mappings
:param stg_ftsk: storage FeedTask
"""
# Get a volume driver for each volume
for bdm in bdms or []:
conn_info = bdm.get('connection_info')
vol_drv = volume.build_volume_driver(self.adapter, instance,
conn_info, stg_ftsk=stg_ftsk)
yield bdm, vol_drv
def _vol_drv_iter(self, context, instance, bdms, stg_ftsk=None):
"""Yields a bdm and volume driver.
:param context: security context
:param instance: nova.objects.instance.Instance
:param bdms: block device mappings
:param stg_ftsk: storage FeedTask
"""
# Get a volume driver for each volume
for bdm in bdms or []:
conn_info = bdm.get('connection_info')
vol_drv = volume.build_volume_driver(self.adapter, instance,
conn_info, stg_ftsk=stg_ftsk)
yield bdm, vol_drv
def extend_volume(self, context, connection_info, instance,
requested_size):
"""Extend the disk attached to the instance.
:param context: security context
:param dict connection_info: The connection for the extended volume.
:param nova.objects.instance.Instance instance:
The instance whose volume gets extended.
:param int requested_size: The requested new volume size in bytes.
:return: None
"""
vol_drv = volume.build_volume_driver(self.adapter, instance,
connection_info)
vol_drv.extend_volume()