From owner-freebsd-stable@freebsd.org Fri Aug 31 16:12:39 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D3416FCF64C for ; Fri, 31 Aug 2018 16:12:39 +0000 (UTC) (envelope-from cyschow@shaw.ca) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 9644F79F23 for ; Fri, 31 Aug 2018 16:12:39 +0000 (UTC) (envelope-from cyschow@shaw.ca) Received: by mailman.ysv.freebsd.org (Postfix) id 56449FCF64B; Fri, 31 Aug 2018 16:12:39 +0000 (UTC) Delivered-To: stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4519EFCF64A for ; Fri, 31 Aug 2018 16:12:39 +0000 (UTC) (envelope-from cyschow@shaw.ca) Received: from smtp-out-so.shaw.ca (smtp-out-so.shaw.ca [64.59.136.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 0239979F21 for ; Fri, 31 Aug 2018 16:12:38 +0000 (UTC) (envelope-from cyschow@shaw.ca) Received: from mail.intranet.peyto.ca ([24.64.227.31]) by shaw.ca with ESMTP id vm2Bfh3UewyxUvm2CfNsgR; Fri, 31 Aug 2018 10:12:32 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shaw.ca; s=s20180605; t=1535731952; bh=OvQg7XJRZNDLrp8E4DCuqvRwjvHw98OZWVjEUuzNOYU=; h=To:From:Subject:Date; b=hc/SOolAeU1t7708D5fljjlB9Z7/ZJAIQW3NaibVNRLqb3mtBlL33Y27mpXG3vNXM jzyorPmKXpNpWnarQHtBFvp4Q32ExxFeaJ2sCRIaIY4RH1bRGcObtRLTPJvgvomC+A Bj3fLoLGitUWcCCZ1XYULsb72jtGfumShnduJPCM1tD57SS8AR7XEiaCIf9ZiHwFiQ I6EXH2Q3+kiXmHYz9XMEu02RXlpnDQP/QBqNtnMM4XRlHaFaPMPG5aAw9mBYOtCx1+ YJ3aHMuXUhDF918AGYinDGamPDVfP51zKWDOXcrzF8xYUGe/IFq/kOMTNV3hg8FbU8 05Vb+HsH3jy3g== X-Authority-Analysis: v=2.3 cv=NPJhBHyg c=1 sm=1 tr=0 a=EzZWVta4pqxsgR2mpKnCwA==:117 a=EzZWVta4pqxsgR2mpKnCwA==:17 a=IkcTkHD0fZMA:10 a=O76VCmqbo-wA:10 a=x7bEGLp0ZPQA:10 a=dapMudl6Dx4A:10 a=ELOxpg8rFSLf5YKSA_wA:9 a=QEXdDO2ut3YA:10 a=Bl1bqend9reKY-4Nh7dc:22 a=HH7FIXwXL_sUf1zzYxQd:22 Received: from [192.168.4.6] (unknown [192.168.4.6]) by mail.intranet.peyto.ca (Postfix) with ESMTPSA id BFEB812FCB6 for ; Fri, 31 Aug 2018 10:08:38 -0600 (MDT) To: stable@freebsd.org From: Samuel Chow Subject: Cannot setup dumpdev on glabel disk Message-ID: <19f80f48-5fea-e105-18b2-1a64e06acc79@shaw.ca> Date: Fri, 31 Aug 2018 10:08:20 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Peyto-MailScanner-Information: Please contact the ISP for more information X-Peyto-MailScanner-ID: BFEB812FCB6.A5C6F X-Peyto-MailScanner: Found to be clean X-Peyto-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-1, required 6, autolearn=disabled, ALL_TRUSTED -1.00) X-Peyto-MailScanner-From: cyschow@shaw.ca X-Spam-Status: No X-CMAE-Envelope: MS4wfL23XXB972TwdPlxZTEW7icPpUfYIDG5pf6DXlkXIjgM+neI7Jb7KW52capzNPu0VkUWf94dEgPvcLed3fiot5BHJvi/hime4JKsxEpTQdkCYYlcoQpA +lslEbpPri+jTwR51sJoeWw95pHmScFAkUB59AW0nj776AWyxcBjttiz X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 31 Aug 2018 16:12:40 -0000 I am running 11-STABLE, and I am experiencing kernel panics when I am destroying a VIMAGE-based jail. Naturally, I flipped to the chapter about 'Kernel Debugging' to learn about 'Obtaining a Kernel Crash Dump'. However, I am finding that my permanently glabel'ed disk partition cannot be used as dumpdev. Is that true, and why not? I mean, swap can use it just fine. I am unable to find this restriction in the documentation. # grep swap /etc/fstab /dev/label/boot01b      none         swap       sw      0 0 # swapinfo Device          1K-blocks     Used    Avail Capacity /dev/label/boot01b  41943040        0 41943040     0% # glabel status | grep boot   label/boot01     N/A  ada4s1   label/boot02     N/A  ada5s1 # dumpon /dev/label/boot01b dumpon: ioctl(DIOCSKERNELDUMP): Operation not supported by device