| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Ian Barwick <ian(dot)barwick(at)2ndquadrant(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Ron <ronljohnsonjr(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Tables(s) that feed pg_controldata |
| Date: | 2018-12-10 14:35:43 |
| Message-ID: | 23175.1544452543@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Ian Barwick <ian(dot)barwick(at)2ndquadrant(dot)com> writes:
> On 12/10/2018 11:50 AM, Michael Paquier wrote:
>> Perhaps. Even with that, writing an extension for 9.2 would require
>> copy-pasting a lot of code from pg_controldata.c and taking as well the
>> code which has been introduced for the various control functions.
>> Dirty, still doable.
> I've got some code which does just that to read pg_control as far
> back as 9.3, and it is indeed not pretty ;).
If I had to do this pre-9.6, I'd write a function in an untrusted PL
that invoked pg_controldata and parsed its output. Ugly, but short
and easy to port across versions.
regards, tom lane
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