From 9be2793c2e057a5e4f8c8c4dd2131ddcc3b11608 Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Sat, 23 Jul 2011 16:55:25 +0900 Subject: db/api: block_device_mapping_update_or_create() It is possible to have same virtual device name. So eliminate old entries whose entry has same virtual device name. --- nova/db/sqlalchemy/api.py | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/nova/db/sqlalchemy/api.py b/nova/db/sqlalchemy/api.py index ba03cabbc..ad51f5192 100644 --- a/nova/db/sqlalchemy/api.py +++ b/nova/db/sqlalchemy/api.py @@ -20,6 +20,7 @@ Implementation of SQLAlchemy backend. """ import warnings +from nova import block_device from nova import db from nova import exception from nova import flags @@ -2264,6 +2265,20 @@ def block_device_mapping_update_or_create(context, values): else: result.update(values) + # NOTE(yamahata): same virtual device name can be specified multiple + # times. So delete the existing ones. + virtual_name = values['virtual_name'] + if (virtual_name is not None and + block_device.is_swap_or_ephemeral(virtual_name)): + session.query(models.BlockDeviceMapping).\ + filter_by(instance_id=values['instance_id']).\ + filter_by(virtual_name=virtual_name).\ + filter(models.BlockDeviceMapping.device_name != + values['device_name']).\ + update({'deleted': True, + 'deleted_at': utils.utcnow(), + 'updated_at': literal_column('updated_at')}) + @require_context def block_device_mapping_get_all_by_instance(context, instance_id): -- cgit