[ovs-dev] [PATCH] ovsdb: Use column diffs for ovsdb and raft log entries.

[Ben Pfaff]

On Fri, Dec 11, 2020 at 09:54:47PM +0100, Ilya Maximets wrote:
> Currently, ovsdb-server stores complete value for the column in a database
> file and in a raft log in case this column changed.  This means that
> transaction that adds, for example, one new acl to a port group creates
> a log entry with all UUIDs of all existing acls + one new.  Same for
> ports in logical switches and routers and more other columns with sets
> in Northbound DB.

One question I have about this is about downgrades, in the context of
standalone databases.  It would be good to document a procedure for
downgrading from the new format to the old one.  I haven't studied the
new format but it's possible that, for example, running "ovsdb-tool
compact" before the downgrade would make it acceptable to the old
version of ovsdb-server.