From owner-freebsd-hackers Wed Aug 18 8:11:14 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from heathers.stdio.com (heathers.stdio.com [199.89.192.5]) by hub.freebsd.org (Postfix) with ESMTP id 329C014EE1 for ; Wed, 18 Aug 1999 08:11:05 -0700 (PDT) (envelope-from lile@stdio.com) Received: from heathers.stdio.com (lile@heathers.stdio.com [199.89.192.5]) by heathers.stdio.com (8.8.8/8.8.8) with ESMTP id LAA14942; Wed, 18 Aug 1999 11:11:19 -0400 (EDT) (envelope-from lile@stdio.com) Date: Wed, 18 Aug 1999 11:11:19 -0400 (EDT) From: Larry Lile To: hackers@freebsd.org Cc: dlane@yahoo.com Subject: async v. sync v. default mode on ufs Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It was pointed out to me by a co-worker that FreeBSD has actually three modes of operation for mounting ufs filesystems. Could someone please explain to me, and him, the differences between the three. Also does anyone knows how these compare to sync and async on Linux? Just a btw, you seem to be able to set sync and async on a filesystem at the same time. What gives? dlane# mount -u -o sync,async,noatime /var dlane-printer# mount /dev/wd0s1a on / (local, noatime, synchronous, writes: sync 405 async 23) /dev/wd0s1e on /usr (local, noatime, synchronous, writes: sync 118365 async 83882) /dev/wd0s1f on /var (asynchronous, local, noatime, synchronous, writes: sync 93 async 216) procfs on /proc (local) dlane# /var looks questionable... I would never try that on purpose, but it just kinda happened, and when I looked at it I though "wow that's broken"! Larry Lile lile@stdio.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message