From owner-freebsd-stable@FreeBSD.ORG Tue Jan 8 14:22:13 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4197016A419 for ; Tue, 8 Jan 2008 14:22:13 +0000 (UTC) (envelope-from aw1@stade.co.uk) Received: from lon-mail-4.gradwell.net (lon-mail-4.gradwell.net [193.111.201.130]) by mx1.freebsd.org (Postfix) with ESMTP id D221A13C459 for ; Tue, 8 Jan 2008 14:22:12 +0000 (UTC) (envelope-from aw1@stade.co.uk) Received: from 5aca3c8f.bb.sky.com ([90.202.60.143] helo=access2.hanley.stade.co.uk) by lon-mail-4.gradwell.net with esmtp (Gradwell gwh-smtpd 1.275) id 47838712.6a1d.f43; Tue, 8 Jan 2008 14:22:10 +0000 (envelope-sender ) Received: from steerpike.hanley.stade.co.uk (steerpike [192.168.1.10]) by access2.hanley.stade.co.uk (8.14.1/8.14.1) with ESMTP id m08EM9Cc060843; Tue, 8 Jan 2008 14:22:09 GMT (envelope-from aw1@steerpike.hanley.stade.co.uk) Received: from steerpike.hanley.stade.co.uk (localhost [127.0.0.1]) by steerpike.hanley.stade.co.uk (8.14.2/8.14.2) with ESMTP id m08EM99i002213; Tue, 8 Jan 2008 14:22:09 GMT (envelope-from aw1@steerpike.hanley.stade.co.uk) Received: (from aw1@localhost) by steerpike.hanley.stade.co.uk (8.14.2/8.14.2/Submit) id m08EM7u2002212; Tue, 8 Jan 2008 14:22:07 GMT (envelope-from aw1) Date: Tue, 8 Jan 2008 14:22:07 +0000 From: Adrian Wontroba To: Eugene Grosbein Message-ID: <20080108142207.GA1509@steerpike.hanley.stade.co.uk> Mail-Followup-To: Adrian Wontroba , Eugene Grosbein , freebsd-stable@freebsd.org References: <20080108030857.GA93021@steerpike.hanley.stade.co.uk> <20080108065240.GA11135@svzserv.kemerovo.su> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080108065240.GA11135@svzserv.kemerovo.su> User-Agent: Mutt/1.4.2.3i X-Operating-System: FreeBSD 7.0-PRERELEASE Organization: Oh dear, I've joined one again. X-Virus-Scanned: ClamAV 0.91.2/5433/Tue Jan 8 13:39:00 2008 on access2.hanley.stade.co.uk X-Virus-Scanned: ClamAV 0.92/5433/Tue Jan 8 13:39:00 2008 on steerpike.hanley.stade.co.uk X-Virus-Status: Clean Cc: freebsd-stable@freebsd.org Subject: Re: RELENG7 using lpt causes panic X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: aw1@stade.co.uk List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jan 2008 14:22:13 -0000 On Tue, Jan 08, 2008 at 01:52:40PM +0700, Eugene Grosbein wrote: > On Tue, Jan 08, 2008 at 03:08:57AM +0000, Adrian Wontroba wrote: > > > I've recently switched some of my home systems to RELENG7. > > > > All seemed fairly well until I tried printing a CUPS test page on my > > backup and print server to an elderly Laserjet IIIp, where I seem to > > have a reproducible panic. It has happened twice. This is painful, as > > I have a big home fileystem (striped over two mirrors over most of two > > 500 GB disks). The gmirror syncronisation and background fsck leave the > > system close to unusable for hours while they fight over the disks. > > > > I was somewhat startled that something so basic as printing causes a > > panic. There have been no hardware changes since I last printed under > > RELENG6, but I don't print often, so hardware decay is a possibility. > > > > Is this a known problem? If not, I'll take the time to try various tests > > (with /home unmounted) and raise a PR. > > There is a PR about this problem with workaround: > http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/117973 > > Eugene Grosbein My thanks to Eugene for the pointer to a known workaround (switching the printer driver to extended mode before printing with '/usr/sbin/lptcontrol -e -d /dev/lpt0.ctl') and to John for explaining the underlying issue and intentions for fixing it. -- Adrian Wontroba Heisenberg may have done it.