On 09/02/2011 03:04 PM, Tom Lane wrote:
Bruce Momjian<br...@momjian.us>  writes:
Andrew Dunstan wrote:
In any case, it would be good to get rid of the limitation if possible.
Then we could look at creating an automated test that we could use in
the buildfarm.
Well, the idea of using the catalog version was that it is something we
expect would change during any change in the system catalogs or internal
data format that would require the use of pg_upgrade.  I am unclear what
other fixed value we could use for this.
IMO there's next to no value in testing that scenario anyway, since
nobody would ever use it in the field.  What *would* be of value is
testing upgrades from previous release versions.  Probably that will
take some work in the buildfarm infrastructure as well as figuring out a
non-problematic test case to use, but that's the direction we need to
head in.

I'm working on this right now.

Basically the idea is to stash away build and data dirs (after we've run regression, PL and contrib testing) for stable branches (via a command line option) and then test upgrading them. A trial run on the first part is currently running. Once I have that sorted out I'll work on the testing bit ;-)



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