| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-bugs <pgsql-bugs(at)postgresql(dot)org>, Maxim Boguk <maxim(dot)boguk(at)gmail(dot)com>, Максим Панченко <Panchenko(at)gw(dot)tander(dot)ru>, Толстенко Илья <tolstenko_iv(at)gw(dot)tander(dot)ru>, Сизов Сергей Павлович <sizov_sp(at)gw(dot)tander(dot)ru>, Соболев Виталий Анатольевич <sobolev_va(at)gw(dot)tander(dot)ru> |
| Subject: | Re: Completely broken replica after PANIC: WAL contains references to invalid pages |
| Date: | 2013-11-04 09:48:42 |
| Message-ID: | 20131104094842.GH3567@awork2.anarazel.de |
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| Lists: | pgsql-bugs |
On 2013-11-01 00:35:18 -0700, Sergey Konoplev wrote:
> On Tue, Apr 2, 2013 at 11:26 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> > The attached patch fixes this although I don't like the way it knowledge of the
> > point up to which StartupSUBTRANS zeroes pages is handled.
>
> So, after half a year the same failure has happened again on the same
> replica, but now patched with the Andres' patch (9.2.4 + the patch)
> that was supposed to fix it.
I think that's actually a different bug - what the patch was fixing was
the clog/subtrans errors, not the "reference to invalid pages".
I've submitted a fix for at least one cause causing that independently
from this bug which is included in 9.2.5
(17fa4c321ccf9693de406faffe6b235e949aa25f). Note thought that that fix
needed a fix iff using a cassert enabled build
(4da24f12e63313b7dbb6b3e3d0317e04045df636) which is *not* in 9.2.5.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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