Comment 8 for bug 1929255

On a given system we can have the following symlinks

/vmlinuz.old -> boot/vmlinuz-4.15.0-144-lowlatency
/vmlinuz -> boot/vmlinuz-4.15.0-144-generic
/boot/vmlinuz.old -> vmlinuz-4.15.0-144-lowlatency
/boot/vmlinuz -> vmlinuz-4.15.0-144-generic

which is controlled by /etc/kernel-img.conf setting link_in_boot. The compiled-in default, and the setting that installers set has changed. Thus depending which release one installed either cases might be present.

And they should all work.

Testing the proposed patch:

linknames() {
 tgt_kernel="$1"
 echo old "initrd.img${tgt_kernel#vmlinu?}"
 echo new "${tgt_kernel%/*}/initrd.img${tgt_kernel#*vmlinu?}"
}
linknames boot/vmlinuz-5.11
linknames vmlinuz-5.11

produces

old initrd.imgboot/vmlinuz-5.11
new boot/initrd.img-5.11
old initrd.img-5.11
new vmlinuz-5.11/initrd.img-5.11

meaning it fixes the case of link_in_boot = no; but regresses the link_in_boot = yes case.