openstack
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cinder
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Merge "Fix downgrade in 002_quota_class.py for MySQL"

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Jenkins 2014-01-08 06:16:47 +00:00 committed by Gerrit Code Review
parent 92e28b375b 1babca0b8f
commit 40a7da8c3f
1 changed files with 17 additions and 0 deletions
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17
cinder/db/sqlalchemy/migrate_repo/versions/002_quota_class.py
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@ -12,6 +12,7 @@
# License for the specific language governing permissions and limitations
# under the License.
from migrate import ForeignKeyConstraint
from sqlalchemy import Boolean, Column, DateTime
from sqlalchemy import MetaData, Integer, String, Table, ForeignKey
@ -109,6 +110,22 @@ def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
if migrate_engine.name == 'mysql':
# NOTE(jsbryant): MySQL Cannot drop the quota_usages table
# until the foreign key reservations_ibfk_1 is removed. We
# remove the foreign key first, and then we drop the table.
table = Table('reservations', meta, autoload=True)
ref_table = Table('reservations', meta, autoload=True)
params = {'columns': [table.c['usage_id']],
'refcolumns': [ref_table.c['id']],
'name': 'reservations_ibfk_1'}
try:
fkey = ForeignKeyConstraint(**params)
fkey.drop()
except Exception:
LOG.error(_("Dropping foreign key reservations_ibfk_1 failed."))
quota_classes = Table('quota_classes', meta, autoload=True)
try:
quota_classes.drop()