Re: initdb and fsync

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Andres Freund <andres(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org, Peter Eisentraut <peter_e(at)gmx(dot)net>
Subject: Re: initdb and fsync
Date: 2012-06-19 17:22:02
Message-ID: 1340126522.19023.78.camel@jdavis
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On Mon, 2012-06-18 at 21:41 +0200, Andres Freund wrote:
> It calls pg_flush_data inside of copy_file which does the posix_fadvise... So
> maybe just put the sync_file_range in pg_flush_data?

The functions in fd.c aren't linked to initdb, so it's a challenge to
share that code (I remember now: that's why I didn't use pg_flush_data
originally). I don't see a clean way to resolve that, do you?

Also, it seems that sync_file_range() doesn't help with creating a
database much (on my machine), so it doesn't seem important to use it
there.

Right now I'm inclined to leave the patch as-is.

Regards,
Jeff Davis

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