def delete_export(self, context, volume):
volume_metadata = self.get_volume_admin_metadata(
context.elevated(), volume)
if 'readonly' not in volume_metadata:
# NOTE(zhiyan): set a default value for read-only flag to metadata.
self.update_volume_admin_metadata(context.elevated(), volume,
{'readonly': 'False'})
volume_metadata['readonly'] = 'False'
if volume_metadata['readonly'] == 'True' and mode != 'ro':
raise exception.InvalidVolumeAttachMode(mode=mode,
volume_id=volume['id'])
return self.volume_rpcapi.delete_export(context, volume)
def do_attach():
# check the volume status before attaching
volume = self.db.volume_get(context, volume_id)
volume_metadata = self.db.volume_admin_metadata_get(
context.elevated(), volume_id)
if volume['status'] == 'attaching':
if (volume['instance_uuid'] and volume['instance_uuid'] !=
instance_uuid):
msg = _("being attached by another instance")
raise exception.InvalidVolume(reason=msg)
if (volume['attached_host'] and volume['attached_host'] !=
host_name):
msg = _("being attached by another host")
raise exception.InvalidVolume(reason=msg)
if (volume_metadata.get('attached_mode') and
volume_metadata.get('attached_mode') != mode):
msg = _("being attached by different mode")
raise exception.InvalidVolume(reason=msg)
elif volume['status'] != "available":
msg = _("status must be available")
raise exception.InvalidVolume(reason=msg)
# TODO(jdg): attach_time column is currently varchar
# we should update this to a date-time object
# also consider adding detach_time?
self.db.volume_update(context, volume_id,
{"instance_uuid": instance_uuid,
"attached_host": host_name,
"status": "attaching",
"attach_time": timeutils.strtime()})
self.db.volume_admin_metadata_update(context.elevated(),
volume_id,
{"attached_mode": mode},
False)
if instance_uuid and not uuidutils.is_uuid_like(instance_uuid):
self.db.volume_update(context, volume_id,
{'status': 'error_attaching'})
raise exception.InvalidUUID(uuid=instance_uuid)
host_name_sanitized = utils.sanitize_hostname(
host_name) if host_name else None
volume = self.db.volume_get(context, volume_id)
if volume_metadata.get('readonly') == 'True' and mode != 'ro':
self.db.volume_update(context, volume_id,
{'status': 'error_attaching'})
raise exception.InvalidVolumeAttachMode(mode=mode,
volume_id=volume_id)
try:
self.driver.attach_volume(context,
volume,
instance_uuid,
host_name_sanitized,
mountpoint)
except Exception:
with excutils.save_and_reraise_exception():
self.db.volume_update(context, volume_id,
{'status': 'error_attaching'})
self.db.volume_attached(context.elevated(),
volume_id,
instance_uuid,
host_name_sanitized,
mountpoint)
