From owner-freebsd-hackers Tue Jun 9 08:51:29 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA24034 for freebsd-hackers-outgoing; Tue, 9 Jun 1998 08:51:29 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from nexus.astro.psu.edu (nexus.astro.psu.edu [128.118.147.20]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA23627 for ; Tue, 9 Jun 1998 08:49:42 -0700 (PDT) (envelope-from mph@astro.psu.edu) Received: from mstar.astro.psu.edu by nexus.astro.psu.edu (4.1/Nexus-1.3) id AA22708; Tue, 9 Jun 98 11:49:30 EDT Received: by mstar.astro.psu.edu (SMI-8.6/Client-1.3) id LAA27188; Tue, 9 Jun 1998 11:49:28 -0400 Message-Id: <19980609114927.A27109@mstar.astro.psu.edu> Date: Tue, 9 Jun 1998 11:49:27 -0400 From: Matthew Hunt To: Nick Hibma , FreeBSD hackers mailing list Subject: Re: Newbie 3 questions. (fwd) References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: ; from Nick Hibma on Tue, Jun 09, 1998 at 04:48:13PM +0200 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, Jun 09, 1998 at 04:48:13PM +0200, Nick Hibma wrote: > > No, you mean "noasync". > > 2.2.6 uses sync. Tried it yesterday. "sync" and "noasync" are different, by my reading of "man mount". I think "sync" causes all I/O to be done synchronously, while "noasync" only causes synchronous metadata I/O. More evidence that they are different: flarn:~# mount | grep /var /dev/wd0s1e on /var (local) flarn:~# mount -u -o async /var flarn:~# mount | grep /var /dev/wd0s1e on /var (asynchronous, local) flarn:~# mount -u -o sync /var flarn:~# mount | grep /var /dev/wd0s1e on /var (local, synchronous) flarn:~# mount -u -o nosync /var flarn:~# mount | grep /var /dev/wd0s1e on /var (local) -- Matthew Hunt * Stay close to the Vorlon. http://www.pobox.com/~mph/pgp.key for PGP public key 0x67203349. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message