From owner-freebsd-questions Thu Dec 6 15:29:30 2001 Delivered-To: freebsd-questions@freebsd.org Received: from smtp2.mbox.com.au (203-134-146-019.cust.pth.iprimus.net.au [203.134.146.19]) by hub.freebsd.org (Postfix) with ESMTP id E410237B416 for ; Thu, 6 Dec 2001 15:29:25 -0800 (PST) Received: from nms2.mbox.com.au (webmail.i7mail.com.au [192.168.20.4]) by smtp2.mbox.com.au (Sun Internet Mail Server sims.4.0.2000.05.17.04.13.p6) with ESMTP id <0GNY00I733RE7I@smtp2.mbox.com.au> for freebsd-questions@FreeBSD.ORG; Fri, 7 Dec 2001 07:26:02 +0800 (WST) Received: from mbox.com.au ([127.0.0.1]) by nms2.mbox.com.au (Netscape Messaging Server 4.15) with ESMTP id GNY3RV03.3GD for ; Fri, 07 Dec 2001 07:26:19 +0800 Date: Fri, 07 Dec 2001 10:26:19 +1100 From: BSD Freak Subject: Journaling File Systems and Soft Updates confusion To: FreeBSD Questions Message-id: <63ba6e639af8.639af863ba6e@mbox.com.au> MIME-version: 1.0 X-Mailer: Netscape Webmail Content-type: text/plain; charset=us-ascii Content-language: en Content-disposition: inline Content-transfer-encoding: 7BIT X-Accept-Language: en Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi all, I have read several articles on the issue and spoken to a few people regarding this issue and when ever I mention a journaling file system to FreeBSD people I automatically get pointed to Soft Updates as being an equivalent. As far as I am aware this is not case at all. The whole point of a journaling file system on systems such as Linux/NT/Solaris etc. is not to increase performance but rather to avoid an 'fsck' when the server gets shutdown "uncleanly". This is because fsck can take several hours to run on a very large filesystem. FreeBSD's ffs curently cannot do this (avoid an fsck) with or without soft updates. Soft updates of FreeBSD is merely there to increase performance. I may have this all wrong (someone please correct me if I have) but soft updates is NOT an equivalent to a journaling file system. --------------------------------------------------------------------- It is automatic log-in and notification. It is the all NEW mBeeper! http://www.mbox.com.au/mbeeper To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message