Re: Regenerating rescue kernels (Fedora upgrade documentation)

[pgnd <pgnd@xxxxxxxxxxxx>]

ensure

	cat /usr/lib/dracut/dracut.conf.d/02-rescue.conf
		dracut_rescue_image="yes"

	grep exclude /etc/dnf/dnf.conf | grep dracut-config-rescue
		(empty)

clean existing, to prevent exec blocking

	rm -f /boot/vmlinuz-0-rescue-* /boot/initramfs-0-rescue-*

regenerate rescue kernels for currently installed kernels,

	for _k in /boot/vmlinuz-[0-9]*
	do
	 _v=${_k#/boot/vmlinuz-}
	 dracut --verbose --force --no-hostonly -a rescue /boot/initramfs-0-rescue-"${_v}".img "${_v}"
	done

e.g., before,

	ls -al /boot/{initram,vmlinuz}*
		-rw------- 1 root root  40M Apr 24 09:20 /boot/initramfs-6.14.2-300.fc42.x86_64.img
		-rw------- 1 root root  40M Apr 29 09:43 /boot/initramfs-6.14.3-300.fc42.x86_64.img
		-rw------- 1 root root  40M Apr 30 12:27 /boot/initramfs-6.14.4-300.fc42.x86_64.img
		-rwxr-xr-x 1 root root  17M Apr  9 20:00 /boot/vmlinuz-6.14.2-300.fc42.x86_64*
		-rwxr-xr-x 1 root root  17M Apr 19 20:00 /boot/vmlinuz-6.14.3-300.fc42.x86_64*
		-rwxr-xr-x 1 root root  17M Apr 24 20:00 /boot/vmlinuz-6.14.4-300.fc42.x86_64*

after,

	ls -al /boot/vmlinuz*

rescue kernels are big. make sure your /boot partition has enough space.
e.g., for these 3 kernels + rescue kernels,

	ls -al /boot/{initram,vmlinuz}*
		-rw------- 1 root root 166M Apr 30 12:56 /boot/initramfs-0-rescue-6.14.2-300.fc42.x86_64.img
		-rw------- 1 root root 166M Apr 30 12:57 /boot/initramfs-0-rescue-6.14.3-300.fc42.x86_64.img
		-rw------- 1 root root 166M Apr 30 12:59 /boot/initramfs-0-rescue-6.14.4-300.fc42.x86_64.img
		-rw------- 1 root root  40M Apr 24 09:20 /boot/initramfs-6.14.2-300.fc42.x86_64.img
		-rw------- 1 root root  40M Apr 29 09:43 /boot/initramfs-6.14.3-300.fc42.x86_64.img
		-rw------- 1 root root  40M Apr 30 12:27 /boot/initramfs-6.14.4-300.fc42.x86_64.img
		-rwxr-xr-x 1 root root  17M Apr  9 20:00 /boot/vmlinuz-6.14.2-300.fc42.x86_64*
		-rwxr-xr-x 1 root root  17M Apr 19 20:00 /boot/vmlinuz-6.14.3-300.fc42.x86_64*
		-rwxr-xr-x 1 root root  17M Apr 24 20:00 /boot/vmlinuz-6.14.4-300.fc42.x86_64*

here,

	df -h `mount | grep boot | awk '{print $1}'`
		Filesystem     Type  Size  Used Avail Use% Mounted on
		/dev/sda3      ext4  2.0G  718M  1.1G  40% /boot
--
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