Unable to boot off kernel built on different machine

Unable to boot off kernel built on different machine

[Rusty Lynch]

I am having the strange problem (that I suspect is embarrassingly simple)
where I can only boot a kernel built on the same machine.  For example
my setup looks like:

* machine 'A' (RH 8.0 P4 system): 
  - contains a 2.5 kernel tree on an exported NFS drive
  - this is the machine where I do all my real work, and
    do not want to run test kernels on
* machine 'B' (RH 8.0 P3 system):
  - mounts the kernel tree on 'A' to make it easy to
    install new kernels on for testing

If I 'make clean', 'make', install kernel and rerun lilo from the kernel 
tree from 'B' then I can boot the new kernel with no issues.

If I 'make clean' and 'make' from the kernel tree from 'A' and then install
from 'B' then I get a boot failure when the kernel attempts to mount the 
root partition with an error message complaining "LABEL=/" is not valid. 

This has got to be something really basic.

    --rustyl

Here is my lilo.conf ==>

prompt
timeout=50
default=linux-orig
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/hack
        label=hack
        read-only
        append="hdc=ide-scsi root=LABEL=/"

image=/boot/vmlinuz-2.4.18-14smp
        label=linux-orig
        initrd=/boot/initrd-2.4.18-14smp.img
        read-only
        append="hdc=ide-scsi root=LABEL=/"

Re: Unable to boot off kernel built on different machine

[Bruce Harada]

On Tue, 14 Jan 2003 11:38:36 -0800
Rusty Lynch <rusty@penguin.co.intel.com> wrote:

> I am having the strange problem (that I suspect is embarrassingly simple)
> where I can only boot a kernel built on the same machine.  For example
> my setup looks like:
> 
> * machine 'A' (RH 8.0 P4 system): 
>   - contains a 2.5 kernel tree on an exported NFS drive
>   - this is the machine where I do all my real work, and
>     do not want to run test kernels on
> * machine 'B' (RH 8.0 P3 system):
>   - mounts the kernel tree on 'A' to make it easy to
>     install new kernels on for testing
[SNIP]

Check /etc/fstab on machines A and B - what do they contain?

Re: Unable to boot off kernel built on different machine

[Rusty Lynch]

I figured it out.  All I had to do was use 'rdev' to set the root 
correctly.  Machine 'A' was setting the root as /dev/hda1 and 
Machine 'B' was setting the root as /dev/hdb1.

The kernel README gave me the clue.

    --rustyl

On Tue, 2003-01-14 at 17:01, Bruce Harada wrote:
> On Tue, 14 Jan 2003 11:38:36 -0800
> Rusty Lynch <rusty@penguin.co.intel.com> wrote:
> 
> > I am having the strange problem (that I suspect is embarrassingly simple)
> > where I can only boot a kernel built on the same machine.  For example
> > my setup looks like:
> > 
> > * machine 'A' (RH 8.0 P4 system): 
> >   - contains a 2.5 kernel tree on an exported NFS drive
> >   - this is the machine where I do all my real work, and
> >     do not want to run test kernels on
> > * machine 'B' (RH 8.0 P3 system):
> >   - mounts the kernel tree on 'A' to make it easy to
> >     install new kernels on for testing
> [SNIP]
> 
> Check /etc/fstab on machines A and B - what do they contain?