Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 1 Mar 2001 15:30:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 1 Mar 2001 15:30:27 -0500 Received: from [194.213.32.137] ([194.213.32.137]:2052 "EHLO bug.ucw.cz") by vger.kernel.org with ESMTP id ; Thu, 1 Mar 2001 15:30:14 -0500 Date: Wed, 28 Feb 2001 12:30:14 +0000 From: Pavel Machek To: Petr Konecny Cc: linux-kernel@vger.kernel.org Subject: Re: Disk change messages Message-ID: <20010228123014.B40@(none)> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: ; from pekon@informatics.muni.cz on Tue, Feb 27, 2001 at 09:02:08PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > I've been trying to use vold to automount CDs. The daemon tries to open > /dev/cdrom and if it succeeds it examines the media and mounts it under > /cdrom/volume_name. > > The problem is that when there is no disk in the drive the following > message: > VFS: Disk change detected on device ide1(22,0) > is written to system log during each open call. Vold calls open every 5 > seconds, so it's 17280 lines in log/day. I have been able to avoid these > messages by commenting out a line in drivers/ide/ide-cd.c (patch > included) and have not seen any problems yet. > > I guess I have three questions: > 1. can this patch break things ? I suppose it could happen only No. > 2. is it possible to avoid the message by modifying vold ? E.g. finding > out that there is no media in the drive without calling open. Don't think so. > 3. is there a clean way to avoid these repeated messages ? Syslogdshould sumarize "last message repeated 123456 times" . > Thanks, Petr > > --- ide-cd.c 2001/02/22 22:30:02 1.1.1.11 > +++ ide-cd.c 2001/02/27 19:51:58 > @@ -601,7 +601,7 @@ > > /* Check for tray open. */ > if (sense_key == NOT_READY) { > - cdrom_saw_media_change (drive); > +/* cdrom_saw_media_change (drive); */ > } else if (sense_key == UNIT_ATTENTION) { > /* Check for media change. */ > cdrom_saw_media_change (drive); > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/