When booting with Fedora-Server-dvd-x86_64-30-20190411.n.0.iso,
/proc/cmdline is empty (libvirt, qemu host with bios, not sure if that
matters), after installation to disk, anaconda would "crash" in kernel-core
%posttrans, after calling kernel-install, because dracut would fail
with
> Could not determine the kernel command line parameters.
> Please specify the kernel command line in /etc/kernel/cmdline!
I guess it's legitimate, even if unusual, to have no cmdline parameters.
Two changes are done in this patch:
1. do not fail if the cmdline is empty.
2. if /usr/lib/kernel/cmdline or /etc/kernel/cmdline are present, but
empty, ignore /proc/cmdline. If there's explicit configuration to
have empty cmdline, don't ignore it.
The kernel-install is called even if you run make install.
Since we don't call dracut with -f a second make install will fail
because initrd with same version is already there.
This makes kernel developers feel miserable.
https://bugzilla.redhat.com/show_bug.cgi?id=1642402
The GRUB 2 bootloaders expect the initrd to be installed in /boot instead
of /boot/$MACHINE_ID/$KERNEL_VERSION/{linux,initrd}, so if that directory
doesn't exists, install the initramfs images on the /boot directory.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
From systemd-234, kernel-install plugins are called even if /etc/machine-id
is missing or empty, and in that case BOOT_DIR_ABS is a fake directory.
So, let's skip to create initrd in that case.
Harald Hoyer