tripleo-image-elements/elements/reset-bls-entries/README.rst

reset-bls-entries

This is an element which will run a script on first boot to rename /boot/loader/entries filenames to match the new value of /etc/machine-id. This is required for grub2-mkconfig calls to incorporate existing values in the boot loader entry files.

It only runs when first-boot criteria is met, such as when uninitialized is written to /etc/machine-id