From owner-freebsd-hackers@FreeBSD.ORG Sat Jun 5 14:04:18 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DE74916A4CE for ; Sat, 5 Jun 2004 14:04:18 -0700 (PDT) Received: from web80103.mail.yahoo.com (web80103.mail.yahoo.com [66.163.169.76]) by mx1.FreeBSD.org (Postfix) with SMTP id A4EF043D39 for ; Sat, 5 Jun 2004 14:04:18 -0700 (PDT) (envelope-from evans.alan@sbcglobal.net) Message-ID: <20040605210415.18079.qmail@web80103.mail.yahoo.com> Received: from [66.124.150.210] by web80103.mail.yahoo.com via HTTP; Sat, 05 Jun 2004 14:04:15 PDT Date: Sat, 5 Jun 2004 14:04:15 -0700 (PDT) From: Alan Evans To: hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailman-Approved-At: Sun, 06 Jun 2004 05:25:01 -0700 Subject: machine is unusable with panic: vrele: negative ref cnt X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jun 2004 21:04:19 -0000 On boot I see the following on an IBM T30 laptop: Mounting root from ufs:/dev/ad0s1a WARNING: / was not properly dismounted ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 panic: vrele: negative ref cnt syncing disks, buffers remaining... 9 9 9 9 9 9 9 9 9 9 \giving up on 9 buffers. And the same occurs on every reboot and the machine isn't usable anymore. I'd like to salvage the data that's in the hard disk. Any ideas on how ro recover data from the hard disk? The disk is only 4 months old. Thanks, Alan Evans