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Re: renaming LV which is root makes system unbootable



On Sun, Oct 29, 2006 at 10:41:12PM +0000, Clive Menzies wrote:
> Hi
> 
> I've been experimenting with LVM on my laptop to be able to install
> several systems with the flexibility to adjust sizes.  I named the VG
> 'alpha' and the LVs a, b, c and d.  /boot is a real partition, a = /,
> b = /usr, c = /var and d = /tmp and all has been working fine for a
> while now.
> 
> I was planning to adjust the sizes of /usr (too small) and /var (too
> big) prior to setting up another system.  I had the bright idea of
> renaming a,b,c and d to root, usr, var and tmp respectively thinking it
> would be easier to tell what was what once I had more systems on the
> box.
> 
> using lvm lvrename, I renamed all the LVs and changed the entries in
> /etc/fstab to reflect the new names, rebooted and it hangs because it
> can't find the / partition.  I suspect that there is somewhere else
> that I have to change the name in a conf file but I can't find where.  I
> can mount the root partition when in another system and so I know it's
> there and I've checked the fstab which seems correct.
>

Its the kernel that needs to know where / is.  So your boot loader
passes the root= parameter.  Change that to match and you should be OK.

Doug.



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