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Put rollback instructions in upgrade notes

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Andrew Morgan 2020-05-11 16:04:00 +01:00
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UPGRADE.rst
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@ -123,6 +123,25 @@ Plugins using the ``complete_sso_login`` method of
version ``complete_sso_login_async`` which includes additional checks. The
non-async version is considered deprecated.
Rolling back to v1.12.4 after a failed upgrade
----------------------------------------------
v1.13.0 includes a lot of large changes. If something problematic occurs, you
may want to roll-back to a previous version of Synapse. Because v1.13.0 also
includes a new database schema version, reverting that version is also required
alongside the generic rollback instructions mentioned above. In short, to roll
back to v1.12.4 you need to:
1. Stop the server
2. Decrease the schema version in the database:
.. code:: sql
UPGRADE schema_version SET version = 57;
3. Downgrade Synapse by following the instructions for your installation method
in the "Rolling back to older versions" section above.
Upgrading to v1.12.0
====================