Re: [linux-lvm] Is now: Resizing & LVM shutdown

[Rupert Heesom <raheesom@navpoint.com>]

On 23 May 2001 22:36:20 -0500, Austin Gonyou wrote:
> I'd say use reiser of XFS for your LVM partition. The grow utilities are
> pretty kick ass and seem to work really well.

Thanks for your advice.

However, right now I need more help getting LVM to properly shut down
when the PC is unmounting the disks in the /etc/rc.d/init.d/halt script.

An extract from another post of mine:

I've discovered that my /etc/rc.d/init.d/halt script is set up
incorrectly for LVM.  When I previously installed LVM, I followed
instructions, and put a "vgchange -an" into the halt script just after
/proc is umounted.

What I'm finding now is that when I'm shutting the PC down, vgchange is
complaining that it can't close the VG down because there's an active
partition (something like that).  I've had a look at the halt script,
and I can't figure out exactly how umounting the LV & deactivating the
VG would work.

I put a tentative line right above the "/sbin/vgchange -an" saying
"umount /dev/vg/root".   However, if I'm unmounting root BEFORE
deactivating the VG, then the system won't find the /sbin/vgchange util
will it?  

>>>  I've tried shutting the PC down with that extra "halt" script line
in there.  It doesn't help at all.

I do have  /boot/initrd-lvm-2.4.3.gz which is used at boot time.  This
ramdisk does have /sbin/vgchange in it (which you probably know).  If
root is unmounted when /sbin/vgchange is called, will the system use the
ramdisk?   If so, how does it know to use it?   (I'm kinda new to
figuring out how ramdisks work, I just follow instructions and they
work!)


> -- 
> Austin Gonyou
> Systems Architect, CCNA
> Coremetrics, Inc.
> Phone: 512-796-9023
> email: austin@coremetrics.com
> 
> On 23 May 2001, Rupert Heesom wrote:
> 
> > As I write this, a new kernel is being compiled with the patch for
> > online ext2resizing.  According to xconfig, enabling the option was
> > DANGEROUS!
> >
> > As I think about it, since I've installed that root ramdisk (works
> > great), I don't actually need to be able to resize my LVM partition
> > mounted.  Still, it's good to have a kernel with such a capability.
> >
> > I'm not concerned now about UNMOUNTING / deactivating the LVM when
> > shutting the PC down.  That doesn't seem to be working at all.  (See
> > another post of mine re details there).
> >
> > Perhaps you would know how to help me there?  I'll experiment a bit
> > myself, but I'm afraid of damaging the LV, since when I reboot my PC,
> > the VG is not yet deactivated!  However it _has_ happened twice now
> > without a problem.
> >
> > On 23 May 2001 16:56:35 -0600, Andreas Dilger wrote:
> > >
> > > If you patch your kernel with the online ext2 patches, you can resize
> > > your root partition while it is still mounted.  You will still need a
> > > reboot to install the new kernel, however, but only the one time.  See
> > > http://sourceforge.net/projects/ext2resize/
> > >
> > > It still isn't a bad idea to have a small non-LVM partition on one of
> > > your disks which has a kernel you can boot from, along with useful
> > > tools in /lib and /sbin.  I guess miniroot is such a thing.
> >
> >
> 
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-- 
regs
rupert