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Hi,
I've a Kilo installation which I want to migrate to Liberty.
I've installed the Liberty Keystone's RPMs and configured the minimun to 
upgrade the DB schema ("connection" parameter in the [database] section 
of keystone.conf).
Then, I've tried to run

     su -s /bin/sh -c "keystone-manage db_sync" keystone

but it's failed with the following error:

     2016-06-23 13:20:50.191 22423 CRITICAL keystone [-] KeyError: 
<VerNum(86)>

which is quite useless.

Any suggestion ?

many thanks,

     Alvise