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 m7HHbdIX012240 for ; Sun, 17 Aug 2008 13:37:39 -0400 Received: from smtp6-g19.free.fr (smtp6-g19.free.fr [212.27.42.36]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m7HHbQTb008728 for ; Sun, 17 Aug 2008 13:37:26 -0400 Received: from smtp6-g19.free.fr (localhost.localdomain [127.0.0.1]) by smtp6-g19.free.fr (Postfix) with ESMTP id DC3EC17279 for ; Sun, 17 Aug 2008 19:37:25 +0200 (CEST) Received: from [192.168.1.2] (bon31-1-82-66-78-161.fbx.proxad.net [82.66.78.161]) by smtp6-g19.free.fr (Postfix) with ESMTP id B27B91722D for ; Sun, 17 Aug 2008 19:37:25 +0200 (CEST) Message-ID: <48A861D5.5000106@free.fr> Date: Sun, 17 Aug 2008 19:37:25 +0200 From: Georges Giralt MIME-Version: 1.0 Subject: Re: [linux-lvm] mirroring an LV? References: <20080817171618.GB13912@us.ibm.com> In-Reply-To: <20080817171618.GB13912@us.ibm.com> Content-Transfer-Encoding: quoted-printable 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="iso-8859-1"; format="flowed" To: LVM general discussion and development malahal@us.ibm.com a =EF=BF=BDcrit : > Mirror needs at least 3 PVs (2 for legs and 1 for dirty log) and you > don't have 3 PVs in that volume group! >=20 > --Malahal. >=20 > Gordon McLellan [gordonthree@gmail.com] wrote: >> I'm pulling my hair out trying to setup a mirrored logical volume. >> >> lvconvert tells me I don't have enough free space, even though I have >> hundreds of gigabytes free on both physical volumes. >> >> Command: lvconvert -m1 /dev/vg1/iscsi_deeds_data >> Insufficient suitable allocatable extents for logical volume : 10240 >> more required >> >> Any ideas? >> >> Thanks!, >> >> Gordon >> >> Here's the output from the lvconvert with verbose and debugging turned o= n: >> >> # lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data ........................snip.........................;; Hi ! IMHO, you would be good when using soft mirror (md) to mirror your 2 PV=20 and then make a vg on the md and then lv into it... I use 3 disks to mirror my VG/LV and it is a waste. At next major system=20 upgrade I'll convert it to MD/VG and reclaim a disk. Hope this helps ! --=20 If the only tool you have is a hammer, you tend to see every problem as=20 a nail. Abraham Maslow