First, I have switched the BLS off as I am confused by what it is, and how it works. And I am sad from the way the change has been communicated.
I am trying to change the default mq-deadline scheduler to BFQ as it seems to work better on my HDD. But it doesn’t work as expected (afaik).
I added the
elevator=bfq at the end of
GRUB_CMDLINE_LINUX, and run grub2-mkconfig. The option is visible in
/proc/cmdline but the scheduler is remains mq-deadline.