[Fwd: scyld beowulf question]

Horatio B. Bogbindero wyy at admu.edu.ph
Fri Feb 15 03:05:34 PST 2002


<snipped for brevity>

this is the last few lines of the bootup after the 2-K-M and when the
seconds kernel starts to boot. this is using the standard CDROM bootup
sequence.

apm: Bios version 1.2 Flags 0x03 (Driver version 1.13)
request_module[block-major-3]: Root fs not mounted
VFS: Cannot open root device 03:05
Kernel panic: VFS unable to mount root fs on 03:05
Reboot in 30 seconds..


> 
> This sounds like the Two kernel monte isn't working.
> 
> Try making a floppy for a stage two floppy.
> 
>  * Comment out all "bootmodule" lines from /etc/beowulf/config.boot
>    and add one that only has the Ethernet driver you're using (matches
>    your h/w)
> 
>  * Run: "beoboot -2 -f -o /dev/fd0" with a floppy in the master.
> 
> At this point the slave node should boot fine.  If it does you might
> try installing the stage 1 image on the hard drive using
> "beoboot-install" after you have partitioned the disk on the slave
> node.  It would be very interest to know if the slave node will boot
> via the stock "beoboot-install" because it uses "lilo" as it's boot
> loader while the floppy/CDROM uses syslinux.  We've had some trouble
> with monte and syslinux on some machines.

this is the contents of the error file after using the 2nd stage
bootdisk to boot the slave node:

node_up: Setting system clock.
node_up: TODO set interface netmask.
node_up: Configuring loopback interface.
/dev/hda: No such device
node_up: Configuring PCI devices.
setup_fs: Configuring node filesystems...
setup_fs: Using /etc/beowulf/fstab
setup_fs: Checking /dev/ram0 (type=ext2)...
setup_fs: Hmmm...This appears to be a ramdisk. 
setup_fs: I'm going to try to try checking the filesystem (fsck) anyway.
setup_fs: If it is a RAM disk the following will fail harmlessly.
e2fsck 1.20, 25-May-2001 for EXT2 FS 0.5b, 95/08/09
Couldn't find ext2 superblock, trying backup blocks...
e2fsck
The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

: Bad magic number in super-block while trying to open /dev/ram0
setup_fs: FSCK failure. (OK for RAM disks)
setup_fs: Mounting /dev/ram0 on /rootfs//... (type=ext2; options=defaults)
mount: wrong fs type, bad option, bad superblock on /dev/ram0,
       or too many mounted file systems
Failed to mount /dev/ram0 on /.

> 
> If it ends up that the beoboot-install stage 1 image also doesn't boot
> right you can modify the beoboot-install script to place stage 2 image
> on the slave node's hard disk.
> 
am i doing something wrong here? it does not seem that the 2-K-M failed
entirely because i see the second kernel boot.

thank you for your help.
 
--------------------------------------
William Emmanuel S. Yu
Ateneo Cervini-Eliazo Networks (ACENT)
email  :  wyy at admu dot edu dot ph
web    :  http://CNG.ateneo.net/wyu/
phone  :  63(2)4266001-4186
GPG    :  http://CNG.ateneo.net/wyu/wyy.pgp
 
War spares not the brave, but the cowardly.
		-- Anacreon
 
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