From owner-freebsd-stable@FreeBSD.ORG Wed May 19 05:08:40 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5159116A4CE for ; Wed, 19 May 2004 05:08:40 -0700 (PDT) Received: from auk2.snu.ac.kr (auk2.snu.ac.kr [147.46.100.32]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9116E43D58 for ; Wed, 19 May 2004 05:08:39 -0700 (PDT) (envelope-from stopspam@users.sourceforge.net) Received: from [147.46.44.181] (stopspam@users.sourceforge.net) by auk2.snu.ac.kr (Terrace Internet Messaging Server) with ESMTP id 2004051920:52:18:020135.13435.2879863728 for ; Wed, 19 May 2004 20:52:18 +0900 (KST) Message-ID: <40AB4E3A.6030407@users.sourceforge.net> Date: Wed, 19 May 2004 21:08:26 +0900 From: Rob User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6) Gecko/20040507 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-TERRACE-SPAMMARK: NO (SR:7.10) (by Terrace) Subject: system command hangs (unkillable); ps shows 'sbwait' state? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 May 2004 12:08:40 -0000 Hi, I'm using fairly recent FreeBSD-stable on intel PC. Within last few days, I encountered two hangs of a system command, that I was unable to resolve. I could not kill the command, even a 'kill -9' did not work. 1. I had a 2.5 Gb disk mounted on /home/software. As root, I overloaded the filesystem, with negative percentage left on the device (from df command). So as root, I did a 'rm -rf' in /home/software, followed by a 'df -h'. But the df command gave no response and became unkillable by any means (ctrl-C, kill -9 ). Using 'ps', I found the df command in the 'sbwait' state. 2. I had a usb device mounted as /dev/da0s1 on /mnt. Mounting (as root) went all well, but when I unmounted it, as root, the umount command hanged, again the umount command was in sbwait state. In this case it was even worse: when I killed the xterminal where the umount command was hanging, the whole system froze. Only power off/on helped me out here. I don't know what happened; don't know how to further investigate this. Has somebody else similar experiences? Is stability going down for Stable kernel? Regards, Rob.