From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m9LBDmca007816 for ; Tue, 21 Oct 2008 07:13:48 -0400 Received: from mailstore03.fastname.no (mailstore03.fastname.no [85.19.150.34]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m9LBDEfN010807 for ; Tue, 21 Oct 2008 07:13:15 -0400 Received: from [195.212.29.67] (helo=[192.168.94.25]) by mailstore03.fastname.no with esmtpa (Exim 4.69) (envelope-from ) id 1KsFAo-0003aB-3i for linux-lvm@redhat.com; Tue, 21 Oct 2008 13:13:14 +0200 Message-ID: <48FDB947.3090509@mortent.org> Date: Tue, 21 Oct 2008 13:13:11 +0200 From: Morten Torstensen MIME-Version: 1.0 Subject: Re: [linux-lvm] LVs corrupted after pvresize References: <48F7AD78.1000002@knebb.de> <48F80EFB.30404@knebb.de> <1224221030.7772.17.camel@localhost.localdomain> <1224528632.6013.66.camel@localhost.localdomain> In-Reply-To: <1224528632.6013.66.camel@localhost.localdomain> Content-Transfer-Encoding: 7bit Reply-To: morten@mortent.org, 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"; format="flowed" To: LVM general discussion and development Peter Larsen wrote: > Can you give an example or two on how the LVM differs on the > user-friendliness areas? Say you want to mirror a LV, then you just do a "mklvcopy mylvname 2" to have 2 copies of data (one extra, like raid-1). If you want to migrate your disks to a new system, add the new PV to your VG and do a "mklvcopy mylvname 3 newpv", then when it finish remove your old mirrors and delete the old PVs. The AIX concept of physical extent/logical extent mapping is sorely missed on linux. Generally speaking, LVM on AIX is also more mature. Exporting and importing VGs (to move VGs between systems) works better in my experience, clustering is more stable, but that is also something where YMMV can show. Managing mirrors, data placement and hotspot detection are what I mainly miss on Linux. -- //Morten Torstensen //Email: morten@mortent.org //IM: Cartoon@jabber.no morten.torstensen@gmail.com And if it turns out that there is a God, I don't believe that he is evil. The worst that can be said is that he's an underachiever.