Re: Simplifying wal_sync_method

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Marko Kreen <marko(at)l-t(dot)ee>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Simplifying wal_sync_method
Date: 2005-08-09 03:55:03
Message-ID: 12068.1123559703@sss.pgh.pa.us
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Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>> fsync_writethrough only works on Win32 the postgresql.conf should
>> reflect that.

> Right now what wal_sync_method supports isn't clear at all.

Yeah. I think we had a TODO to figure out a way for the assign_hook to
report back exactly which values *are* allowed on the current platform.
Constructing the message for this doesn't seem very difficult, but the
rules about when assign_hooks can issue their own elog message seem
to constrain the usefulness...

regards, tom lane

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