On 17 April 2013 22:36, Bruce Momjian <br...@momjian.us> wrote:

>> > I would like to know the answer of how an upgrade from checksum to
>> > no-checksum would behave so I can modify pg_upgrade to allow it.
>> Why? 9.3 pg_upgrade certainly doesn't need it. When we get to 9.4, if
>> someone has checksums enabled and wants to disable it, why is pg_upgrade
>> the right time to do that? Wouldn't it make more sense to allow them to
>> do that at any time?
> Well, right now, pg_upgrade is the only way you could potentially turn
> off checksums.  You are right that we might eventually want a command,
> but my point is that we currently have a limitation in pg_upgrade that
> might not be necessary.

We don't currently have checksums, so pg_upgrade doesn't need to cope
with turning them off in 9.3

For 9.4, it might, but likely we've have a tool to turn them off
before then anyway.

 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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