grub does not load menu.lst

asi · 09-15-2007, 07:56 AM

hy together,

I'm fighting with grub again. I want to boot my servers from a storage volume. the server is connected with a fibre channel adapter to the storage and the FCA is configured with BIOS enabled and so on.

I installed grub on this new volume, which looks like this:

sdd1 -> /boot
sdd2 -> LVM2
sdd3 -> SWAP

LVM2 has a volume group vgos, and a logical volume slash (my /). while working on the "local" os, sdd is (hd3). I did mounted vgos/slash to /mnt/newslash, sdd1 to /mnt/newslash/boot, also /proc and /dev. i made a change root to /mnt/newslash and installed grub:

grub
> root (hd3,0)
> setup (hd3)
> quit

everything worked fine for me. I changed the grub.conf to this:

Code:

default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux AS (2.6.9-55.0.6.ELsmp)
       root (hd0,0)
       kernel /vmlinuz-2.6.9-55.0.6.ELsmp ro root=/dev/vgos/slash rhgb quiet
       initrd /initrd-2.6.9-55.0.6.ELsmp.img
#title Red Hat Enterprise Linux AS (2.6.9-55.0.6.ELsmp)
#       root (hd0,0)
#       kernel /vmlinuz-2.6.9-55.0.6.ELsmp ro root=/dev/vg00/lv00 rhgb quiet
#       initrd /initrd-2.6.9-55.0.6.ELsmp.img
#title Red Hat Enterprise Linux AS (2.6.9-55.0.6.EL)
#       root (hd0,0)
#       kernel /vmlinuz-2.6.9-55.0.6.EL ro root=/dev/vg00/lv00 rhgb quiet
#       initrd /initrd-2.6.9-55.0.6.EL.img
title Red Hat Enterprise Linux AS (2.6.9-22.ELsmp)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-22.ELsmp ro root=/dev/vg00/lv00 rhgb quiet
        initrd /initrd-2.6.9-22.ELsmp.img
title Red Hat Enterprise Linux AS-up (2.6.9-22.EL)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-22.EL ro root=/dev/vg00/lv00 rhgb quiet
        initrd /initrd-2.6.9-22.EL.img

then i also altered my /etc/fstab to the new volumes, recreated my initrd file and rebooted.

now, what happens: the server boots and the only thing I see is the grub console. If I enter the following commands, my server boots to the "new" OS on the new starge volume:

Code:

> root (hd0,0)
> kernel /vmlinuz-2.6.9-55.0.6.ELsmp ro root=/dev/vgos/slash rhgb quiet
> initrd /initrd-2.6.9-55.0.6.ELsmp.img
> boot

and it works. So, my question is: Why does grub NOT load my config file? all the paths are okay (doublechecked that), also the filenames of the kernel and the initrd file as well...

any suggestions?

thanks in advance. asi

AwesomeMachine · 09-15-2007, 08:07 AM

You might also look at '/etc/fstab'. I believe the LVMs need to be defined as such there also.

asi · 09-15-2007, 08:18 AM

This is the contenct of my fstab now:

Code:

LABEL=/BOOT             /boot                   ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /dev/shm                tmpfs   defaults        0 0
none                    /proc                   proc    defaults        0 0
none                    /sys                    sysfs   defaults        0 0
LABEL=SWAP              swap                    swap    defaults        0 0
#/dev/vg02/lv20         /u01            ext3    defaults        1 2
#/dev/vg00/lv00         /               ext3    defaults        1 2
/dev/vgos/slash         /               ext3    defaults        1 2
#/dev/vg01/lv10         /u00            ext3    defaults        1 2
/dev/hda                /media/cdrecorder       auto    pamconsole,exec,noauto,managed 0 0
/dev/fd0                /media/floppy           auto    pamconsole,exec,noauto,managed 0 0

I have implemented this "storage boot" on 3 other servers so far. i had nothing else to cofigure therefore. if the LVM Modules are loaded they'll find the volumes, so that always worked for me so far.

the problem is, if I located the problem right, not my fstab, more somthing with grub. I'm not sure if it is looking on the wrong partition for it's config, cause at boot time it needs (hd0), but I instaled grub on (hd3). it is in fact the same device, but I'm not sure what exaclty grub does if I install it on (hd3), respectively which path's are configured.

asi · 09-15-2007, 08:52 AM

I tried something else, but no success with that. I unpresented all other devices on the storage, so sdd goes to sda.
grub
> root (hd0,0)
> setup (hd0)
> quit

but no success with that. exaclty the same behaviour. grub console on boot time, with manual config it works fine

asi · 09-15-2007, 10:53 AM

Found it:

There was something wrong with the setup command (it runs an install). I had to run the install command again, but for the configfile i removed the /boot.

CaptainMorgan · 11-22-2007, 10:33 PM

Quote:

Originally Posted by asi

Found it:

There was something wrong with the setup command (it runs an install). I had to run the install command again, but for the configfile i removed the /boot.

Why did you remove /boot from the command ? Isn't that where your menu.lst is located: /boot/grub/menu.lst ? That's where mine is located and I can't load it, whether I try configfile or setup or install... none of it loads the menu... and I'm not getting any errors either, just being pushed back to the grub> prompt.