From owner-freebsd-stable Thu Oct 18 10:32:21 2001 Delivered-To: freebsd-stable@freebsd.org Received: from leviathan.inethouston.net (leviathan.inethouston.net [66.64.12.249]) by hub.freebsd.org (Postfix) with ESMTP id 8497B37B403 for ; Thu, 18 Oct 2001 10:32:18 -0700 (PDT) Received: from dwcjr (unknown [66.64.12.254]) by leviathan.inethouston.net (Postfix) with ESMTP id 50E1010F42C; Thu, 18 Oct 2001 12:32:21 -0500 (CDT) Message-ID: <01c701c157fa$d8449ba0$fe0c4042@inethouston.net> From: "David W. Chapman Jr." To: "Chad R. Larson" Cc: "Rasputin" , "Garance A Drosihn" , "Doug Poland" , References: <20010928141246.A15515@xor.obsecurity.org> <20011002212002.4034283f.steveo@eircom.net> <20011002214353.A653@student.uu.se> <20011018083713.A20403@polands.org> <20011018144850.A1943@shikima.mine.nu> <20011018105736.A43973@leviathan.inethouston.net> <01c101c157f9$87868da0$fe0c4042@inethouston.net> <20011018103048.B545@freeway.dcfinc.com> Subject: Re: dirpref gives massive performance boost Date: Thu, 18 Oct 2001 12:32:22 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > On Thu, Oct 18, 2001 at 12:22:57PM -0500, David W. Chapman Jr. wrote: > > I'm not looking to turn if off or on, just to see whether a file system of > > mine has that capability in it or if I need to newfs it. > > If it's a UFS, and you're running a new enough kernel, it's getting > done. Of course, it can only be smart about stuff written to the > disk after you built the new kernel. If your disk is mostly empty, > you're cool. If it's pretty full you should back it up, delete > everything (newfs is the fastest way) and then restore all your > data. > > Most easily done by temporarily adding an additional drive big > enough to hold all your stuff, and booting a fixit disk. > Well yes, but I would like to avoid all of this if it is already using dirpref. I currently don't have enough drive space to fully backup my 24gig stripe set. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message