On Thu, Jun 03, 2021 at 05:23:20PM -0600, Chris Murphy wrote:
On Thu, Jun 3, 2021 at 12:20 PM Jon LaBadie jonfu@jgcomp.com wrote:
On my 3 systems, F34, F34, and CentOS7, they are 1, 2, and 6 years old respectively.
Are old rescue kernels still useful? (6 years?)
They might be useful to a sysadmin, I think they are useless. The rescue kernel is really just a "no host-only" initramfs that contains a bunch of extra dracut and kernel modules that the host only initramfs doesn't. The difficulty is the rescue initramfs can't do a full graphical boot once /usr/lib/modules/ dir for that kernel has been removed, which was likely in its first 4 weeks following installation.
Since you won't get graphical boot anyway, I'm not sure you have a good chance of dracut building a new host only initramfs that contains the driver needed for whatever new hardware you've added or changed to. It's pretty esoteric landing in a dracut shell even for experienced users. So I am not a fan.
Might it be useful for /usr/lib/modules/rescue... (and maybe also /usr/src/kernels/rescue...) to be created/preserved for the rescue kernel?