Re: [HACKERS] [PATCHES] wal_checksum = on (default) | off

Gregory Stark <stark@enterprisedb.com> writes:
> "Tom Lane" <tgl@sss.pgh.pa.us> writes:
>> You understand wrong ... a tuple sitting on disk is normally read
>> directly from the shared buffer, and I don't think we want to pay for
>> copying it.

> "xlog records"

Oh, sorry, had the wrong context in mind.  I'm still not very impressed
with the idea --- a CRC check will catch many kinds of problems, whereas
this approach catches exactly one kind of problem.

            regards, tom lane