On Mon, 20 May 2013 12:46:11 -0400 Bill Davidsen <davidsen@xxxxxxx> wrote: > Kevin Fenzi wrote: > > On Sat, 18 May 2013 19:35:23 -0700 > > Joe Zeff <joe@xxxxxxx> wrote: > > > >> On 05/18/2013 06:40 PM, Bill Davidsen wrote: > >>> > >>> > >>> So is dropping the kernel command line options a bug, or > >>> deliberate policy? > >> > >> Neither. When you install a new kernel, the file is rebuilt, using > >> /etc/default/grub as a template. If you need to add something > >> permanently, you need to add it there. > > > > It's actually not. ;) Kernel updates don't run grub2-mkconfig, they > > use grubby which just copies the last existing entry. > > > > It should re-use the options from the previous top existing kernel. > > Did you have those options in that kernel entry? > > > The fact that I got three different answers tells me that I'm not > alone in having some questions in this area. ...snip... Yep. I agree it's confusing. ;( My understanding of it is: * grub2-mkconfig is never run automatically. You can run it yourself however and it will overwrite your config with a new generated one using /etc/default/grub. * On kernel updates, kernel packages call /sbin/new-kernel-pkg which in turn calls grubby. grubby is called with --copy-default, which should copy the arguments from the current default kernel. Additionally, grubby/kernel-new-pkg reads /etc/sysconfig/kernel for some options. So, for your use you could just regen your config after every kernel update. Or you could add the options you need to the default kernel or try and re-run grubby to add the options you need. kevin
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