Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272275AbTGYTm5 (ORCPT ); Fri, 25 Jul 2003 15:42:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272276AbTGYTm5 (ORCPT ); Fri, 25 Jul 2003 15:42:57 -0400 Received: from smtpzilla5.xs4all.nl ([194.109.127.141]:25606 "EHLO smtpzilla5.xs4all.nl") by vger.kernel.org with ESMTP id S272275AbTGYTmz (ORCPT ); Fri, 25 Jul 2003 15:42:55 -0400 Date: Fri, 25 Jul 2003 21:57:52 +0200 From: Jurriaan To: linux-kernel@vger.kernel.org Subject: cutting down on boot messages Message-ID: <20030725195752.GA8107@middle.of.nowhere> Reply-To: thunder7@xs4all.nl Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Message-Flag: Still using Outlook? Please Upgrade to real software! User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2171 Lines: 69 If I boot my system, there are copious messages. For example: md: Autodetecting RAID arrays. md: autorun ... md: considering hdc6 ... md: adding hdc6 ... md: hdc5 has different UUID to hdc6 md: hdc3 has different UUID to hdc6 md: hdc1 has different UUID to hdc6 md: adding hda6 ... md: hda5 has different UUID to hdc6 md: hda3 has different UUID to hdc6 md: hda1 has different UUID to hdc6 md: hdi2 has different UUID to hdc6 md: hdi1 has different UUID to hdc6 md: hde2 has different UUID to hdc6 md: hde1 has different UUID to hdc6 md: created md5 md: bind md: bind md: running: md5: setting max_sectors to 128, segment boundary to 32767 raid1: raid set md5 active with 2 out of 2 mirrors Now these messages are often uninteresting - but sometimes they are. So just deleting them, or requiring a recompile or reboot is not good enough. Also, I noted that these messages were almost always grouped together. Suppose these messages were removed from the normal output, but instead stored in a buffer in the kernel. Then, you could do dmesg.raid to get at the raid-messages, and dmesg.raid --clear to clear the buffer. The same goes for other groups of messages, like the whole APIC/IRQ routing block, ide messages, usb messages etc. Would this keep the interesting information, but cut down on the amount of messages? I'm now at 22k of dmesg, including raid, usb, apic etc, for a single CPU system. I'd be interested in everyone's opinion on this! Jurriaan -- REAL LIFE MANAGEMENT 'DILBERT QUOTATIONS': 11: One day my Boss asked me to submit a status report to him concerning a project I was working on. I asked him if tomorrow would be soon enough. He said "If I wanted it tomorrow, I would have waited until tomorrow to ask for it!" (New business manager, Hallmark Greeting Cards.) Debian (Unstable) GNU/Linux 2.6.0-test1-ac2 4112 bogomips load av: 1.00 1.00 1.00 - 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/