| From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | David Christensen <david(dot)christensen(at)crunchydata(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Greg Sabino Mullane <htamfids(at)gmail(dot)com> |
| Subject: | Re: [PATCH] Teach pg_waldump to extract FPIs from the WAL |
| Date: | 2022-05-03 08:34:41 |
| Message-ID: | 202205030834.4n6qbrivjtuk@alvherre.pgsql |
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| Lists: | pgsql-hackers |
On 2022-Apr-27, Michael Paquier wrote:
> On Tue, Apr 26, 2022 at 01:15:05PM -0500, David Christensen wrote:
> > True. :-) This does seem like a tool geared towards "expert mode", so
> > maybe we just assume if you need it you know what you're doing?
>
> This is definitely an expert mode toy.
I remember Greg Mullane posted a tool that attempts to correct page CRC
mismatches[1]. This new tool might be useful to feed healing attempts,
too. (It's of course not in any way a *solution*, because the page
might have been modified by other WAL records since the last FPI, but it
could be a start towards building a solution that scoops page contents
from WAL.)
[1] https://github.com/turnstep/pg_healer
--
Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/
Subversion to GIT: the shortest path to happiness I've ever heard of
(Alexey Klyukin)
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