Re: Another possible corruption bug in 9.3.2 or possibly a known MultiXact problem?

On 2014-02-28 10:44:14 +0000, Greg Stark wrote:
> On 28 Feb 2014 06:19, "Andres Freund" <andres@2ndquadrant.com> wrote:
> > Generally the LSN is computed when writing, not when a buffer is
> > modified, so that's not particularly surprising. It'd be interesting to
> > see what the records are that end on those LSNs.
> 
> The checksum you mean? But that's why I ran checkpoint.

The checksum is computed in a copy of the buffer, not in the
original. C.f. PageSetChecksumCopy().

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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