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From: Tom Lane <[email protected]>
To: Josh Berkus <[email protected]>
Cc: [email protected]
Subject: Re: [HACKERS] no universally correct setting for fsync
Date: Fri, 07 May 2010 20:13:32 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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Josh Berkus <[email protected]> writes:
> This is what I have to replace the current fsync entry in config.sgml.

s/unexpected shutdown/system crash/, perhaps.  The wording you have
suggests that a forced Postgres stoppage produces a problem, which it
doesn't.  It takes a failure at the OS level or below to cause a
problem.

> I believe that the note about needing fsync for Warm Standby to work
> correctly is true, but could someone verify it?

AFAIK that's nonsense.  The filesystem state that pg_standby could see
will be updated in any case; pg_standby has no direct access to the bits
on the platters, any more than Postgres does.

			regards, tom lane

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