[CentOS] offline root lvm resize

Sat Jul 30 08:37:08 UTC 2011
Sean Hart <tevesxh at gmail.com>

So here goes...
First some back story
     -Centos 5 with latest updates as of yesterday. kernel is
2.6.18-238.19.1.el5
     -setup is raid 1 for /boot and lvm over raid6 for everything else

     -  The / partition (lvm "RootVol") had run out of room... (100%
full, things where falling appart...)

I resized the root volume (from 20GiB to 50GiB). This was done from a
fedora 15 livecd, seemed like a better idea than doing it on a live
system at the time.... After the resize the content of all the lvs
could be mounted and all data was still there (all this from within
fedora).
The problem is when i try to reboot into centos as the root volume
cannot be found.

boot message goes as follows

...
No Volume groups found
Volume Group "RaidVolGrp" not found
...
Kernel panic


the UUID's have not changed, but there is definitely a missing link,
probably something dumb...

I would greatly appreciate if anyone could help point me in the right
direction..

a bit more info

# lvscan
  ACTIVE            '/dev/RaidVolGrp/RootVol' [50.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/HomeVol' [250.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/SwapVol' [2.44 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/MusicVol' [350.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/VideoVol' [350.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/PicturesVol' [300.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/MiscVol' [60.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/ShareddocVol' [60.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/VMVol' [60.00 GiB] inherit
  ACTIVE            '/dev/RaidVolGrp/TorrentVol' [50.00 GiB] inherit

sh