From owner-freebsd-current Thu Sep 26 9:24:12 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2516D37B401 for ; Thu, 26 Sep 2002 09:24:11 -0700 (PDT) Received: from mailout04.sul.t-online.com (mailout04.sul.t-online.com [194.25.134.18]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7E94F43E77 for ; Thu, 26 Sep 2002 09:24:10 -0700 (PDT) (envelope-from Alexander@Leidinger.net) Received: from fwd11.sul.t-online.de by mailout04.sul.t-online.com with smtp id 17ubQR-0002x5-07; Thu, 26 Sep 2002 18:23:39 +0200 Received: from Andro-Beta.Leidinger.net (520065502893-0001@[217.83.27.104]) by fmrl11.sul.t-online.com with esmtp id 17ubQB-1S6XbMC; Thu, 26 Sep 2002 18:23:23 +0200 Received: from Magelan.Leidinger.net (Magelan [192.168.1.1]) by Andro-Beta.Leidinger.net (8.12.5/8.12.5) with ESMTP id g8QGNLZq073837; Thu, 26 Sep 2002 18:23:21 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from Magelan.Leidinger.net (netchild@localhost [127.0.0.1]) by Magelan.Leidinger.net (8.12.5/8.12.5) with SMTP id g8QGNJoG077786; Thu, 26 Sep 2002 18:23:20 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Date: Thu, 26 Sep 2002 18:23:19 +0200 From: Alexander Leidinger To: Dan Nelson Cc: brooks@one-eyed-alien.net, toha@ib.com.ua, freebsd-current@FreeBSD.ORG Subject: Re: Journaled filesystem in CURRENT Message-Id: <20020926182319.68907194.Alexander@Leidinger.net> In-Reply-To: <20020926155218.GA67579@dan.emsphone.com> References: <200209251319.g8PDJYoD047918@ib.com.ua> <20020925111232.B3686@Odin.AC.HMC.Edu> <20020926111949.5c0da160.Alexander@Leidinger.net> <20020926155218.GA67579@dan.emsphone.com> Organization: Independend X-Mailer: Sylpheed version 0.8.1claws (GTK+ 1.2.10; i386-portbld-freebsd5.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Sender: 520065502893-0001@t-dialin.net Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 26 Sep 2002 10:52:18 -0500 Dan Nelson wrote: > > We have something better than those. SoftUpdates. Much faster than > > jfs in metadata intensive operations. > > If you can stand the 20 minutes of severly degraded performance while > the background fsck runs after a crash, and the loss of any files Sometimes it's better to have 20 minutes (or how long it takes to do the bg-fsck on your FS) degraded performance, than no performance at all (you can have this too, just configure the system to make an fg-fsck instead of a bg-fsck)... (how long does it take to check the journal and to do some appropriate actions depending on the journal?) > created up to 30 seconds (by default) before the crash. There's no guarantee with a journaled fs, that the data before the crash is on the disk. A journaled fs is in the same boat with SO here. Bye, Alexander. -- Secret hacker rule #11: hackers read manuals. http://www.Leidinger.net Alexander @ Leidinger.net GPG fingerprint = C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message