Thanks for your reply. What should I do if I want to create a new migration script? Thanks Zhi Chang ------------------ Original ------------------ From: "Vikram Choudhary"<vikschw at gmail.com>; Date: Mon, Oct 12, 2015 12:22 PM To: "OpenStack Development Mailing List (not for usage questions)"<openstack-dev at lists.openstack.org>; Subject: Re: [openstack-dev] [Neutron][db]Neutron db revision fails Hi Zhi, We already have a defect logged for this issue. https://bugs.launchpad.net/neutron/+bug/1503342 Thanks Vikram On Oct 12, 2015 8:10 AM, "Zhi Chang" <changzhi at unitedstack.com> wrote: Hi, everyone. I install a devstack from the latest code. But there is an error when I create a db migration script. My migration shell is: "neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini revision -m "Just For Test"" The error shows: Running revision for neutron ... FAILED: Multiple heads are present; please specify the head revision on which the new revision should be based, or perform a merge. Does my method wrong? Could someone helps me? Thx Zhi Chang __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20151012/b31a745d/attachment.html>