From owner-freebsd-current@FreeBSD.ORG Wed May 23 22:24:25 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6A7F2106566C; Wed, 23 May 2012 22:24:25 +0000 (UTC) (envelope-from prvs=1490a6d0da=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id 9DD4B8FC12; Wed, 23 May 2012 22:24:24 +0000 (UTC) X-Spam-Processed: mail1.multiplay.co.uk, Wed, 23 May 2012 23:24:05 +0100 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 ([188.220.16.49]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50019928669.msg; Wed, 23 May 2012 23:24:03 +0100 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=1490a6d0da=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk Message-ID: From: "Steven Hartland" To: "Mark Linimon" References: <38A5BC8F-A8FB-4371-AB1D-9548F5957254@lists.zabbadoz.net> <20120523131046.GC2358@deviant.kiev.zoral.com.ua> <12410676034.20120524013853@serebryakov.spb.ru> <8D72700F5CA4461BAD1C98908689CB9E@multiplay.co.uk> <20120523220533.GA11122@lonesome.com> Date: Wed, 23 May 2012 23:25:11 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Cc: Konstantin Belousov , "Bjoern A. Zeeb" , lev@FreeBSD.org, Kirk McKusick , freebsd-current FreeBSD Subject: Re: UFS+J panics on HEAD X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 May 2012 22:24:25 -0000 ----- Original Message ----- From: "Mark Linimon" > On Wed, May 23, 2012 at 10:58:48PM +0100, Steven Hartland wrote: >> While it might be a shame to see FFS go by the wayside are there any >> big reasons why you would rather stick with FFS instead of moving >> to ZFS with all the benefits that brings? > > - ZFS eats bytes for breakfast. It is completely inappropriate > for anything with less than 4GB RAM. It does like more RAM than FFS, but can be tuned to work under smaller amounts however given current pricing does anyone use HW for servers with that little RAM? Sure old i386 machines still running legacy ABC that just works so no need to upgrade it may still have less than 4GB RAM, but modern machines running large disk sets are a totally different matter. > - ZFS performs poorly under disk-nearly-full conditions. Not experienced that here, care to clarify / quantify? While if this is the case I can see that may cause problems, but the solution to that is simple don't let your system get that full. Disks are still relatively cheap even after the disasters, so keep on top of your space and you wont see that problem; particularly as ZFS makes it so easy to expand existing pools :) Regards steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.