Re: [HACKERS] Checksums by default? - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [HACKERS] Checksums by default?
Date
Msg-id 24876.1485229782@sss.pgh.pa.us
Whole thread Raw
In response to Re: [HACKERS] Checksums by default?  (Merlin Moncure <mmoncure@gmail.com>)
List pgsql-hackers
Merlin Moncure <mmoncure@gmail.com> writes:
> Hm, but at least in some cases wouldn't it protect people from further
> damage?  End user data damage ought to prevented at all costs IMO.

Well ... not directly.  Disallowing you from accessing busted block A
doesn't in itself prevent the same thing from happening to block B.
The argument seems to be that checksum failure complaints might prompt
users to, say, replace a failing disk drive before it goes dead completely.
But I think there's a whole lot of wishful thinking in that, particularly
when it comes to the sort of low-information users who would actually
be affected by a change in the default checksum setting.
        regards, tom lane



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