From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rover (rover.mkp.net [209.217.122.9]) by dsl2.external.hp.com (Postfix) with ESMTP id 37299482A for ; Mon, 21 Jan 2002 23:33:13 -0700 (MST) To: Grant Grundler Cc: Peter Mottram , "parisc-linux@lists.parisc-linux.org" Subject: Re: [parisc-linux] partitioned md to enable root on raid References: <20020122022033.C1685482A@dsl2.external.hp.com> From: "Martin K. Petersen" Date: 22 Jan 2002 01:32:10 -0500 In-Reply-To: <20020122022033.C1685482A@dsl2.external.hp.com> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: >>>>> "Grant" == Grant Grundler writes: >> Here's the next question - does palo understand how to boot from >> LVM? Grant> No. HPUX LVM is derived from the same original sources as Grant> linux's LVM but is not compatible. Linux LVM is closely modeled after the HP/UX LVM from a sysadmin perspective. But there's no code sharing involved. What I really said was that IBM wrote the original LVM and donated the code to OSF. HP then picked it up and ported it to HP/UX. So AIX, OSF/1 and HP/UX volume managers share a common ancestor. These days they have diverted greatly, though. Grant> HP cannot release the disk layout since it's not HP's to give Grant> away. MKP tried to reverse engineer it early in the port and Grant> gave up after a while. I didn't spend a lot of time on it (a couple of hours of poking). I also tried getting specs for the LVM metadata out of HP with no avail. A read-only implementation for palo should be fairly trivial to write but hardly worth the effort. I do agree with the concensus that MD partitioning is not worth it. Mirror the palo partition as md0, swap as md1 and / as md2. Or whatever. That's the way to do it. As long as you don't need autodetection (and you don't since PDC/IODC don't understand MD devices anyway), you'll be fine leaving the palo partition type as F0. -- Martin K. Petersen Cereal Bowl Engineer, Linuxcare, Inc. http://mkp.net/ SGI XFS, Linux/PA-RISC, GNOME