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Re: new kernel will not boot



On Wednesday 15 October 2008, Steve West wrote:
>>>I have compiled a new kernel and it cannot find the filesystem to boot.
>>>How
>>> do I specify in the kernel confg what disk to boot?
>>>
>>>Steve
>>
>> The obvious question is: did you make a new stanza for it in
>> your /boot/grub/grub.conf?
>
>Yes the grub is all set. It does not seem to matter if I use a LVM or not.
>Say's VFM: Cannot open root device "VolGroup00/LogVol00" or unknown block
>(0,0)
>
>Steve

Mmm, I gave up on LVM, as a solution in search of a problem that seemed to 
have its own problems as baggage.  So I won't try to advise on that, but just 
bring another skuttle of coal to Newcastle.

What I have that makes it pretty easy is a pair of scripts that I wrote years 
ago, one to supervise the unpacking and patch application for a new kernel, 
and one to actually do the building and writing of it and its initrd 
to /boot.  Once that has run, then I edit grub.conf by hand to add the new 
kernel.  The scripts aren't 'purty' but they work.

Of particular importance is continuity of the .config's as you move from 
kernel to kernel, always copy a working .config file set from the old kernel 
to the new one, and do a 'make oldconfig' in order to transfer the known good 
settings to the new kernel's .config.  Then of course you can do a 'make 
xconfig' or a 'make menuconfig' if you need to change something.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Long computations which yield zero are probably all for naught.


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