| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: In-core regression tests for replication, cascading, archiving, PITR, etc. |
| Date: | 2013-12-02 14:59:12 |
| Message-ID: | 5616.1385996352@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)2ndquadrant(dot)com> writes:
> I think we also needs support for testing xid/multixid wraparound. It
> currently isn't realistically testable because of the timeframes
> involved.
When I've wanted to do that in the past, I've used pg_resetxlog to
adjust a cluster's counters. It still requires some manual hacking
though because pg_resetxlog isn't bright enough to create the new
pg_clog files needed when you move the xid counter a long way.
We could fix that, or we could make the backend more forgiving of
not finding the initial clog segment present at startup ...
regards, tom lane
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