From owner-freebsd-fs@FreeBSD.ORG Mon Aug 27 14:35:30 2007 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 711A216A419 for ; Mon, 27 Aug 2007 14:35:30 +0000 (UTC) (envelope-from juri_mian@yahoo.com) Received: from web45601.mail.sp1.yahoo.com (web45601.mail.sp1.yahoo.com [68.180.197.54]) by mx1.freebsd.org (Postfix) with SMTP id 5D28B13C458 for ; Mon, 27 Aug 2007 14:35:30 +0000 (UTC) (envelope-from juri_mian@yahoo.com) Received: (qmail 31951 invoked by uid 60001); 27 Aug 2007 14:35:29 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=tIWRuioUfpJeqF8Tuwz9JqwH6LmzeY4jfRxI9obLq+pm4DaNhtjZBkbLGp8JAfd+HJpErGCNBQkBVvtOLyMDwHk5MVOCiCW8WCI14eXAN0oYidHovlWIbmSjhJKklpvsvkGI4I+sHw9+POCPhabOy07Ppozv2SOajP3x81xi7iQ=; X-YMail-OSG: MDxsVdwVM1kg9evSKhZXOwJmWgVpyOwZMX19NLhigN4SBj7mXgaU5GoShpCTW7CdCUhNmy5GWjAeB6H79sKrg4EzvA-- Received: from [71.63.232.32] by web45601.mail.sp1.yahoo.com via HTTP; Mon, 27 Aug 2007 07:35:28 PDT Date: Mon, 27 Aug 2007 07:35:28 -0700 (PDT) From: Juri Mianovich To: freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <149421.31053.qm@web45601.mail.sp1.yahoo.com> X-Mailman-Approved-At: Mon, 27 Aug 2007 14:57:09 +0000 Subject: Re: How do I get back my previous minfree level of performance ? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Aug 2007 14:35:30 -0000 --- JH wrote: > Setting minfree very very low probably isn't wise, > but I'm sure you knew > about cylinder groups and block allocation before > your change, so I won't > flog *that* horse. Please do... I knew it was a "bad" idea, but given how it was working perfectly with a minfree of one, I didn't think it would be the end of the world moving it to zero. But more to the point, I thought that if I did not use up the space that I gained by going to zero, I could always go back to one without any repurcussions. It turns out I can't, and that is the point of this post. > On 8/27/07, Juri Mianovich > wrote: > > > the crashes that going to zero caused _persist_ > after going back to one. > > > Please describe "crash" in a follow-up message to > the list. > Maybe some output from "bt" (backtrace) or similar > would be helpful? Advice > on reporting kernel trouble may be found at System floods the console with: Warning! Controller is no longer running! code=0xbcef0100 (after a page or so of aac0 timeout messages) It's not interesting - anyone can crash the aac card with too much filesystem stress. I have seen it many times before. The problem is that this time, I cannot reduce the stress by doing anything but leaving that particular filesysem unmounted. But troubleshooting and reducing causes has made it perfectly clear that _it really is_ the change of minfree from 1 -> 0 -> 1 that has caused this problem. So the questions remains: 1. what did I do to my filesystem when I changed the minfree from 1 to 0 to 1 ? How is my current minfree-of-1 filesystem different from my old minfree-of-1 filesystem ? 2. How do I get back my old minfree-of-1 filesystem ? I have enough free space to do it (of course, since it currently _is_ at minfree of 1) ... do I need to defragment, or maybe delete some more files and go to a minfree of 2 ? Or has that filesystem become too jumbled for any amount of minfree to get it back to normal ? Thanks. > > ____________________________________________________________________________________ > Building a website is a piece of cake. Yahoo! Small > Business gives you all the tools to get online. > http://smallbusiness.yahoo.com/webhosting > ____________________________________________________________________________________ Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz