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Re: Block-level CRC checks

From: Brian Hurt <bhurt(at)janestcapital(dot)com>
To: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Block-level CRC checks
Date: 2008-10-02 13:36:26
Message-ID: 48E4CE5A.7030407@janestcapital.com (view raw or flat)
Thread:
Lists: pgsql-hackers
Jonah H. Harris wrote:
> On Thu, Oct 2, 2008 at 9:07 AM, Brian Hurt <bhurt(at)janestcapital(dot)com> wrote:
>   
>> I have a stupid question wrt hint bits and CRC checksums- it seems to me
>> that it should be possible, if you change the hint bits, to be able to very
>> easily calculate what the change in the CRC checksum should be.
>>     
>
> Doesn't the problem still remain?  The problem being that the buffer
> can be changed as it's written, yes?
>
>   
Another possibility is to just not checksum the hint bits...

Brian



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