From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: RE: [linux-lvm] Converting my Root file system to LVM From: Rupert Heesom In-Reply-To: References: Date: 23 May 2001 09:14:54 -0400 Message-Id: <990623699.8904.2.camel@localhost> Mime-Version: 1.0 Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On 23 May 2001 16:01:37 +1200, Steve Wray wrote: > > From: linux-lvm-admin@sistina.com [mailto:linux-lvm-admin@sistina.com]On > > Behalf Of Rupert Heesom > > > Tnx, Steve for the easy howto of your's below. > > BTW, what on earth is that "mount -o loop" command? > > Glad to have helped! > the "-o loop" tells mount to mount the file on the loopback device. > This allows ordinary files (not just block devices) to carry a filesystem. > Its quite cool! > :) That IS pretty cool. > > > > Since my LVol is on my 2nd disk, next, I think I'll try extending my > > Lvol back to cover my 1st disk as well. > > Just watch out for your /boot parition. > You might want to copy lilo.conf over to the /boot partition > and make /etc/lilo.conf a symlink to it there. Yes, I've done that already. The suggestion was in the man page for "lvmcreate_initrd". > > > > One more bit of help, if you can? - > > > > I want to pvmove the file contents of my 2nd disk (/dev/sdb) to my 1st > > disk (/dev/sda). My 1st disk is nice & quiet! Now the lvm-howto > > specifies my next step (adding the "old partition" into the Lvol) as -- > > phew... I have no idea about moving things from PV to PV, > however, you may want to look at setting up a miniroot-in-a-ramdisk > for this sort of thing. I suspect you need to have the VGs deactivated, > and you can't do *that* when its in use as the root LV. I think the concept is covered (to a degree) in the lvm-howto under "removing an old disk" or something like that. I've practiced this pvmove thing on my 2nd disk when it was spare. >From what I remember, the both PVs had to be inside a VG. The pvmove itself wasn't a problem for me, but the LV had to be dismounted to resize it. I will have to extend my LV & resize the file system using e2fsadm, so I will have to dismount the root volume. It sounds like I DO need the root ram disk which you mention. I'll read up about it. > > Check out; > http://innominate.org/~graichen/projects/miniroot > > miniroot is fantastic, but it needs some work to make it useful > for LVM. > Mainly, just unzip and mount it (like you did for the initrd file before) > and copy over the lvm programs and libraries. > > You'll need to set up a lilo entry too, of course. > I think its well documented. > > BTW; I'd *seriously* recommend this for anyone with LVM root. > It can get you out of trouble! > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > -- regs rupert