Re: Completely broken replica after PANIC: WAL contains references to invalid pages

On Mon, Nov 4, 2013 at 1:48 AM, Andres Freund <andres@2ndquadrant.com> wrote:
> On 2013-11-01 00:35:18 -0700, Sergey Konoplev wrote:
>> On Tue, Apr 2, 2013 at 11:26 AM, Andres Freund <andres@2ndquadrant.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".

Can I do something to help fixing this particular bug? I backed up the
relation and xlog files in case if someone need to dig it deeper.

> 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.

--
Kind regards,
Sergey Konoplev
PostgreSQL Consultant and DBA

http://www.linkedin.com/in/grayhemp
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