[ale] live cd for partitioning LVM partitions.

[Bob Toxen]

Try rebooting the system single-user mode (select your desired kernel
with the up and down arrows and then type " single" without the quites).

Then login and remount / read only via:

  mount -r -o remount /

You then should be able to use utilities that won't work with a mounted
file system because they usually won't work with a WRITABLE mounted FS.

I use this technique to run fsck on /.

Bob Toxen
bob at verysecurelinux.com               [Please use for email to me]
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-- The Silicon Valley Tarot Henrique Holschuh with ... by Bob

On Tue, Aug 02, 2011 at 07:04:44PM -0400, Van Loggins wrote:
> The main issues, is that RHEL5 doesn't 
> allow you to make changes to your / 
> partition if it's mounted. Our current 
> method involves booting to a specially 
> created RHEL based rescue system that 
> lives on our PXE server so we can work 
> on changing the LVM partitions and 
> layout without them being mounted.
> 
> Most of my team members are less savvy 
> with the linux command line than I am 
> (and I don't claim to be an expert with 
> it by any means) so was hoping to find a 
> good GUI based partition editor that is 
> able to work with LVM partitions so I 
> can help make the process easier.
> 
> I'll take a look at the gparted live cd, 
> Parted Magic also uses gparted, but they 
> may be further behind the gparted team 
> on the version that is being used for 
> parted magic.
> 
> Thanks
> 
> Van Loggins, A+
> 
> 
> On 8/2/2011 4:31 PM, ale-request at ale.org 
> wrote:
> > Message: 2 Date: Tue, 02 Aug 2011 
> > 13:14:12 -0400 From: Derek Atkins 
> > <warlord at MIT.EDU> Subject: Re: [ale] 
> > live cd for partitioning LVM 
> > partitions. To: Atlanta Linux 
> > Enthusiasts <ale at ale.org> Message-ID: 
> > <sjmfwlj3fdn.fsf at dogbert.ihtfp.org> 
> > Content-Type: text/plain; 
> > charset=us-ascii "Lightner, Jeff" 
> > <JLightner at water.com> writes:
> >> >  I don't understand why you'd need to boot to redo LVM layouts.   The main point in LVM is that you can add/delete/resize things as you desire without impacting other parts of the layout as compared to standard partitioning.  You can even rename a VG or LV if you want so "relayout" shouldn't really be necessary.
> > If you use crypto, apparently "cryptsetup resize" doesn't work on a
> > mounted volume.  Then again, I've had mixed reports about whether you
> > actually need to "resize" a crypto partition.  This is probably more
> > important if you replace a disk in order to resize the physical
> > partition(s).
> >
> > -derek
> > -- Derek Atkins, SB '93 MIT EE, SM '95 
> > MIT Media Laboratory Member, MIT 
> > Student Information Processing Board 
> > (SIPB) URL: 
> > http://web.mit.edu/warlord/ PP-ASEL-IA 
> > N1NWH warlord at MIT.EDU PGP key 
> > available ------------------------------
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