On Tue, Apr 17, 2012 at 12:03 PM, Tom Horsley <horsley1953@xxxxxxxxx> wrote:
> On Tue, 17 Apr 2012 17:49:46 +0200 (CEST) Adam Pribyl wrote:
>>
>> The only reason I know is, that "people tend to modify grub.cfg manually",
>> but with grub2 this is plain wrong anyway. Why do we support this messy
>> setup then?
>
> Because the reverse is true - requiring a tool to modify grub.cfg
> is plain wrong, modifying it manually is the only way to go. What
> we should do is get rid of all the template files and grub2-mkconfig
> and just ship grubby. (One of the prime reasons grub replaced lilo
> was that you didn't have to remember to run some stupid tool after
> editing your grub config, yet here is grub2 with a stupid tool
> again - even stupider because it isn't actually necessary).
As Adam's points out, we can't get rid of grub2-mkconfig. If
new-kernel-pkg called grub2-mkconfig rather than grubby in cases where
grub2's the bootloader, we wouldn't have the discrepancies between
menuentry titles, default kernel, "linux" line arguments, and whether
or not a "recovery" menuentry's generated. grub1 didn't have an
upstream tool to update grub.conf, so grubby was needed. grub2 has
grub2-mkconfig so we may as well use it - and patch it to suit our
needs (for example, patch 10_linux to generate "Fedora <kernel>"
menuentries rather than "Fedora Linux, with Linux <kernel>"
menuentries).
Regarding "modify grub.cfg manually": You should avoid doing so
because your changes'll be wiped out should you run grub2-mkconfig.
It's more practical to use 40_custom (or even create another
"/etc/grub.d" file) to generate a full grub.cfg or simply menuentries.
I have a rawhide VM where I've run "chmod -x /etc/grub.d/*" and
created an executable 99_local:
[root@rawbox ~]# cat /etc/grub.d/99_local
#!/bin/sh
cat <<EOF
set default="0"
set timeout="-1"
terminal_output console
menuentry '3.4.0-0.rc2.git3.1' {
search --no-floppy --fs-uuid --set=root 258ee40a-a25e-4b44-9c6a-055c266e9665
linux /vmlinuz-3.4.0-0.rc2.git3.1.fc18.x86_64
root=/dev/mapper/vg-lv_root ro rd.dm=0 rd.luks=0 rd.lvm.lv=vg/lv_root
rd.lvm.lv=vg/lv_swap rd.md=0 KEYTABLE=us LANG=en_US.UTF-8
SYSFONT=latarcyrheb-sun16 vga=794
initrd /initramfs-3.4.0-0.rc2.git3.1.fc18.x86_64.img
}
<two more kernels>
EOF
[root@rawbox ~]#
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