Re: Block-level CRC checks - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Block-level CRC checks
Date
Msg-id 200809302041.m8UKfxE24525@momjian.us
Whole thread Raw
In response to Block-level CRC checks  (Alvaro Herrera <alvherre@commandprompt.com>)
Responses Re: Block-level CRC checks  ("Jeffrey Baker" <jwbaker@gmail.com>)
List pgsql-hackers
Alvaro Herrera wrote:
> A customer of ours has been having trouble with corrupted data for some
> time.  Of course, we've almost always blamed hardware (and we've seen
> RAID controllers have their firmware upgraded, among other actions), but
> the useful thing to know is when corruption has happened, and where.
> 
> So we've been tasked with adding CRCs to data files.

Maybe a stupid question, but what I/O subsystems corrupt data and fail
to report it?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +


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