From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx16.extmail.prod.ext.phx2.redhat.com [10.5.110.21]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r63ETOM9004141 for ; Wed, 3 Jul 2013 10:29:24 -0400 Received: from smtp4-g21.free.fr (smtp4-g21.free.fr [212.27.42.4]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r63ETKcP013829 for ; Wed, 3 Jul 2013 10:29:22 -0400 Received: from zimbra39-e7.priv.proxad.net (unknown [172.20.243.189]) by smtp4-g21.free.fr (Postfix) with ESMTP id E53524C81BB for ; Wed, 3 Jul 2013 16:29:16 +0200 (CEST) Date: Wed, 3 Jul 2013 16:29:15 +0200 (CEST) From: georges.giralt@free.fr Message-ID: <694672986.201875226.1372861755810.JavaMail.root@zimbra39-e7.priv.proxad.net> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] Resising underlying array 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 Hello I've an old server which use software raid and lvm (Debian based). It is made on a set of 3 320 GB Sata disks. The system is build on a couple of software mirror (3 legged): md0 is at start of disk, 200 MB size, used for /boot. md1 is made with the remainder of the disk space and is set up as a 3 legged mirror which is the sole pv of the volume group onto which the system is built. 200 MB for /boot was sensible years ago but now is a joke. So I plan to extend these 3 partitions up to a couple of GB. And of course reduce by the same amount the 3 remaining partitions making md1. The volume group is far from using all PE in the PV, so I hope I will be able to reduce the PV size without harm. But I'm unable to decide on a workflow and loosing data or downtime are not acceptable options... So I'm begging your help on a suitable workflow to make this happen. Many thanks in advance ! P.S. the 3 disk are here from a time when the system was set up using mirroring into the LVM... Time long gone.