kernel 3.0.3 blind shot with genkernel?

agrypa1 · Apprentice Joined: 31 Mar 2005 Posts: 244

Hi,
I bet my newly build 3.0.3 kernel will fail to start my machine if I do the following:

depontius · Advocate Joined: 05 May 2004 Posts: 3509

I don't use the genkernel configurations - I manage my own. So when I started moving to gentoo-sources-3.0.3 I began with my last working configuration and tweaked that for new or changed items. My kernel booted just fine - I seldom have troubles with non-booting kernels, simply because I always start from a working configuration.

Lacking your own starting configuration, I'd suggest looking into "Pappy's Kernel Seeds", well represented here in the forums.
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wrc1944 · Posted: Tue Aug 23, 2011 7:33 pm Post subject:

I assume you did so, but just in case, did you look at your grub.conf file and see if the stanza for the new kernel was correct?

Maybe all that's wrong is it needs a little edit (compare it with your working kernels).

Also look in /lib/modules and /boot to see if you even have the new kernel and modules installed.

You can also use the .config file from your working kernel, and do it manually.

Just copy it over to the new kernel's source directory (usually /usr/src/linux-whatever), and cd into that directory.

Then edit the makefile at the top and name the extraversion anything you like, which will make the kernel and module directory have new names.

DirtyHairy · Posted: Wed Aug 24, 2011 8:49 am Post subject:

I agree with despontius and wrc1944: if you are building your kernel yourself (in gentoo you always do) for one specific machine and don't have any special requirements like an encrypted root, an initrd is not worth the trouble. Configure yourself a kernel which has everything needed for boot (disk controller and file systems) built-in, take some time to tweak the configuration, and you should be fine. Tweaking might take some time, but it is not half as subtle as many people seem to think, and once you are done, you can copy the config to any new kernel you will be compiling, do "make oldconfig" and then only adjust any new or modified settings (if you activate CONFIG_IKCONFIG and CONFIG_IKCONFIG_PROC, you can access the configuration of the running kernel directly under /proc/config). This way, updating a kernel is near-trivial most of the time, and you will only rarely get any bed surprises.

agrypa1 · Apprentice Joined: 31 Mar 2005 Posts: 244

Thank you guys for your input. It did start (the 3.0.3 kernel) but not out of the box.
Using Pappy's seeds allowed me to start faster than "make defconfig", that's for sure.
I am not happy, though. Of the many things that start "red" - meaning "fail" two things bother me.
my /home is an lvm volume. It gets booted but some strange messages come up. Of the top of my head:
LVM some link should've been created, it would not ovewright it".

Also iptables do not start - but that i know how to fix: probably some more settings should be turned on in the kernel.

Agryppa
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