From owner-freebsd-questions@FreeBSD.ORG Fri Jul 26 16:56:06 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 365878F3 for ; Fri, 26 Jul 2013 16:56:06 +0000 (UTC) (envelope-from dieterbsd@gmail.com) Received: from mail-ob0-x242.google.com (mail-ob0-x242.google.com [IPv6:2607:f8b0:4003:c01::242]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 009EC267A for ; Fri, 26 Jul 2013 16:56:05 +0000 (UTC) Received: by mail-ob0-f194.google.com with SMTP id v19so1092989obq.9 for ; Fri, 26 Jul 2013 09:56:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=fHxPbOX1uy5Bc8cTA88FcHIEG7HSDZBYH050pOYWNXk=; b=X0w7kxUatF3fYG9oKYKY+8pBIyMPtJhh8MBi+3ld+bLvlX4TkGdZG3h8Df7l/JNyZ/ oK8QjBsWuDTIJfTnQTh0dtmVEByaxEnSg0jXF0o1uWnpsk8kk+vgfHGDYtGMgvuPGBuu OpXBTsK1mmGyAbmuT3PXdZXlfUKqfASszswXz++J4IOacTJ4rDj8rWJtqOo3ihCDgFZR GEhWD9Dwy/diyVnp2NhyNrKtmKaQkWIn0uCESotAKzrt3Ha3qmtBcCq+pVXHSX+0jXjR GBv2eC9/1qST1IEadiXkphIVR0BwfcQj+yRiciUaVWtSLaLEZ5vrTDuZt1R3VyyDwKY4 dfZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=fHxPbOX1uy5Bc8cTA88FcHIEG7HSDZBYH050pOYWNXk=; b=lFS0ocHpqM+H2LIEh0mUzc7ZvZ+GjzUSvjvouKMXwUwHZb8Z4kMTBMZYCCj3eGHs3x 5nDbeA0doqiCAd2p8bmAUROttLB7IQrJZFHH9VYmtaveiEOozLaBVoVcgbCSZRiuZMT/ aj8T55gfHOAocSjxnMkiO0OtYRzFPVdYYGCKuA9+QwauPtLEATN/0L1GZqirbaF1t/zx bSBP6fBLk0tVMSU9zZNCa/PRVHCOIBB2RPra/5z7Eg0UOeSJxbP3QUJXTArVsSDiXi1o HVYdQAUZg3n9tOevEPg+33XlmDNk/9KL5FJQ+bljCvPw5wROhapwyZCQT+mOI1vR/iBj lSDg== MIME-Version: 1.0 X-Received: by 10.50.129.68 with SMTP id nu4mr1171479igb.9.1374857765202; Fri, 26 Jul 2013 09:56:05 -0700 (PDT) Received: by 10.64.238.97 with HTTP; Fri, 26 Jul 2013 09:56:05 -0700 (PDT) Date: Fri, 26 Jul 2013 09:56:05 -0700 Message-ID: Subject: disk is AWOL From: Dieter BSD To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Jul 2013 16:56:06 -0000 8.2 amd64 ad8 is a 3TB Seagate on nforce4-ultra controller At boot: ad8: 2861588MB at ata4-master UDMA100 SATA 3Gb/s DEBUG g_part_gpt.c gpt_read_hdr() ad8 succeeded with pp->sectorsize=512 An hour later: # dd if=/dev/ad8 bs=4k count=1 of=/dev/null dd: /dev/ad8: No such file or directory BUT: there was no "ad8: FAILURE - device detached" or similar message on the console, in dmesg, or in /var/log/*. The disk just disappeared without a peep from the kernel. What's going on?