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From: Greg Smith <gsmith@gregsmith.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-documentation <pgsql-docs@postgresql.org>
Subject: Re: [GENERAL] full_page_writes = off?
Date: Mon, 10 Dec 2007 09:27:31 -0500 (EST)
Message-ID: <Pine.GSO.4.64.0712100918320.14895@westnet.com> (raw)
In-Reply-To: <200712101406.lBAE6QU19627@momjian.us>
References: <200712101406.lBAE6QU19627@momjian.us>

On Mon, 10 Dec 2007, Bruce Momjian wrote:

>     exist for disk controller caches.  Consumer-grade IDE drives are
>!    particularly likely to have write-back caches that will not survive a
>!    power failure.  To check write caching on <productname>Linux</> use
>!    <command>hdparm -I</>;  it is enabled if there is a <literal>*</> next
>!    to <literal>Write cache</>.  <command>hdparm -W</> can to turn off
>!    write caching.  On <productname>FreeBSD</> use

I'm not where I can submit this as a patch right now, but there are two 
things that should get fixed in the above:

--Saying "Consumer-grade IDE drives" isn't quite right; "Consumer-grade 
IDE and SATA drives" would correctly label the scope of the problem.

--There's a typo on the next to last line here:  "can to turn off".

--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD



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