renaming LV which is root makes system unbootable

[Clive Menzies <clive@clivemenzies.co.uk>]

Hi

I've done something rather silly.

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.

Any ideas anyone?

Thanks

Clive

-- 
www.clivemenzies.co.uk ...
...strategies for business