From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx14.extmail.prod.ext.phx2.redhat.com [10.5.110.19]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r62HMXjE022747 for ; Tue, 2 Jul 2013 13:22:34 -0400 Received: from mail.gathman.org (wsip-70-169-160-205.dc.dc.cox.net [70.169.160.205]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r62HMWPS012371 for ; Tue, 2 Jul 2013 13:22:33 -0400 Received: from melissa.gathman.org (ip72-205-26-231.dc.dc.cox.net [72.205.26.231]) (authenticated bits=0) by mail.gathman.org (8.14.4/8.14.4) with ESMTP id r62HNIQ4025615 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Tue, 2 Jul 2013 13:23:19 -0400 Message-ID: <51D30C57.5000808@gathman.org> Date: Tue, 02 Jul 2013 13:22:31 -0400 From: Stuart Gathman MIME-Version: 1.0 References: In-Reply-To: Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] LVM handling the entire physical disk Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@redhat.com Long ago, Nostradamus foresaw that on 07/01/2013 06:51 AM, Alessandro MACUZ would write: > What are the benefits/disadvantages between building VGs over 0x8e > partitions or having LVM managing the entire disk with no partition > table? > > We're not speaking about boot volumes since I assume I know how to > handle that case. Disadvantage: If the disk will/could ever be seen by another OS, it is better if the alien OS knows there is some data (of unknown format) there via the partition table. This can help prevent accidental reformatting. Advantage: When mapping virtual disks to virtual machines, I find it especially useful to bypass partition tables. Using kpartx to access partitions from the host is just another layer of complexity that doesn't buy you anything.