From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx2.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m8GJRQj8019641 for ; Tue, 16 Sep 2008 15:27:26 -0400 Received: from smtp6.versatel.nl (smtp6.versatel.nl [62.58.50.97]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m8GJR8mf030356 for ; Tue, 16 Sep 2008 15:27:09 -0400 Received: from [192.168.1.102] (unknown [192.168.1.102]) by mail.vermeer.tv (Postfix) with ESMTPA id C9BEA26F1BB for ; Tue, 16 Sep 2008 21:19:50 +0200 (CEST) From: Koen Vermeer Date: Tue, 16 Sep 2008 21:20:27 +0200 Message-Id: <1221592827.6037.57.camel@localhost> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] Mirrored LV 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 Hi, I was thinking of using a mirrored LV as a easier to use alternative to a RAID1 PV (with matching VG and LV). I tried to find the information I need on how this works and how to set it up, but so far, I failed. First, am I right in trying to use LVM in this way? I have two disks, and I just want to mirror some LVs. Second, I am confused by the apparent need to have this log stored on another device. Actually, this doesn't seem true in two ways: There's the option of having the log in memory and then the documentation only says that the log is 'usually on a separate device'. Does that mean that using a mirrored LV makes no sense on a system with two disks? Or should I just keep the log in memory in this case? Or can I use another PV on one of the disks? Should this be mirrored as well? What happens if I loose that data? >From what I found when searching for answers, it seems that I'm not the only one that's confused... But maybe my searching skills are just lacking. Anyway, I appreciate any help and insights! Best, Koen