Re: [OT] compiled kernels do not boot
Le 26/03/2011 15:25, Hugo Vanwoerkom a écrit :
> tv.debian@googlemail.com wrote:
>> 25/03/2011 21:19, Hugo Vanwoerkom wrote:
>>> Hi,
>>>
>>> I have tried 3 self-compiled kernels and they do not boot. They compile
>>> w/o errors.
>>>
>>> They are compiled with 'make-kpkg --revision 1 --append-to-version -ck2
>>> --initrd kernel_image'. This is with an uptodate Sid.
>>>
>>> I have looked at the initrd files with cpio and I see nothing wrong: the
>>> 'init' file is there as it should be, etc. But what to look for?
>>>
>>> I use legacy-grub and that just sits there with 'boot' as the last
>>> command, forever.
>>>
>>> Does anybody have any suggestions as to what to try next?
>>>
>>> I have used make-kpkg many times, but not in the last 5 months, and this
>>> has never happened to me.
>>>
>>> Hugo
>>>
>>>
>>
>> Hi, I don't think there is a general problem in kernel-package
>> (12.036+nmu1 here), I compiled three kernels (2.6.37* and 2.6.38*) this
>> week and one more is backing right now without issue.
>>
>> Are the required hooks scripts for your setup in place and valid (see
>> /usr/share/kernel-package/examples/etc/) ? Any module missing from
>> /etc/initramfs-tools/modules ?
>
> I did not change the scripts in /etc/kernel. Did you?
Yes, this is from kernel-package README :
"Let me repeat:
Since nothing is created automatically. you need to provide a hook
script for things to happen when you install the kernel image
package. The user provides such scripts. For example, to invoke
mkinitramfs, I did:
--8<---------------cut here---------------start------------->8---
cp /usr/share/kernel-package/examples/etc/kernel/postinst.d/initramfs \
/etc/kernel/postinst.d/
cp /usr/share/kernel-package/examples/etc/kernel/postrm.d/initramfs \
/etc/kernel/postrm.d/
--8<---------------cut here---------------end--------------->8---
These scripts above to nothing unless the corresponding
packages are installed (initramfs-tools or yaird), so you could
potentially cp both over -- as long as you never install both yaird
and initramfs-tools at the same time.
To run grub, I have in /etc/kernel-img.conf:
--8<---------------cut here---------------start------------->8---
postinst_hook = update-grub
postrm_hook = update-grub
--8<---------------cut here---------------end--------------->8---
You can look at other example in the examples directory:
/usr/share/kernel-package/examples/ to see if there are other example
script you want to cp into /etc/kernel -- and you can create your own
scripts."
This is my setup :
ls -lR /etc/kernel/
/etc/kernel/header_postinst.d:
total 8
-rwxr-xr-x 1 root root 436 4 juin 2010 dkms
-rwxr-xr-x 1 root root 1404 1 mai 2009 link
/etc/kernel/header_postrm.d:
total 4
-rwxr-xr-x 1 root root 522 1 mai 2009 link
/etc/kernel/header_preinst.d:
total 0
/etc/kernel/header_prerm.d:
total 4
-rwxr-xr-x 1 root root 430 1 mai 2009 link
/etc/kernel/postinst.d:
total 24
-rwxr-xr-x 1 root root 436 4 juin 2010 dkms
-rwxr-xr-x 1 root root 612 1 mai 2009 initramfs
-rwxr-xr-x 1 root root 704 9 juil. 2010 initramfs-tools
-rwxr-xr-x 1 root root 196 30 nov. 2009 pm-utils
-rwxr-xr-x 1 root root 3326 10 sept. 2009 symlink_hook
-rwxr-xr-x 1 root root 496 18 déc. 19:40 zz-update-grub
/etc/kernel/postrm.d:
total 12
-rwxr-xr-x 1 root root 919 1 mai 2009 initramfs
-rwxr-xr-x 1 root root 567 9 juil. 2010 initramfs-tools
-rwxr-xr-x 1 root root 496 18 déc. 19:40 zz-update-grub
/etc/kernel/preinst.d:
total 0
/etc/kernel/prerm.d:
total 4
-rwxr-xr-x 1 root root 630 17 juil. 2010 dkms
Ignore "dkms" which is not relevant to your situation. The scripts are
mostly the example ones provided by kernel-package, some slightly
adapted to my taste.
Also :
cat /etc/kernel-img.conf
# Kernel image management overrides
# See kernel-img.conf(5) for details
do_symlinks = yes
relative_links = yes
do_bootloader = no
do_bootfloppy = no
do_initrd = yes
link_in_boot = no
image_dest = /
>
>
> I have not added any module to /etc/initramfs-tools/modules.
I have special needs since my system is LUKS on raid for everything
except /boot, maybe you don't need anything special here.
>
>>
>> Maybe you could try with "make deb-pkg" target and see if it boots
>> this way.
>>
>>
>
> Never used that before. But I ran "make deb-pkg" in the kernel tree and
> that created a .deb. Installed that and booted that kernel and it
> behaved exactly the same way: last grub command is 'boot' and it just
> sits there.
>
> Hugo
>
The deb-pkg target has been added some time ago and it is now the
preferred way to build a kernel image in Debian if I understood well, I
still prefer to use kernel-package though.
If the custom kernel image doesn't boot using the stock config from a
Debian kernel (known to boot), then the image and/or initrd is in the
wrong place, doesn't exist, or doesn't contain what's needed for your
setup. That's why I would recommend booting from a Debian kernel, having
a look at the loaded modules to see if something could be missing from
your initrd (and then add it to /etc/initramfs-tools/modules before
updating initrd).
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