OK that worked for an nvme drive, but not for an internal SATA HDD.
$ sudo lsmod | grep bfq $ sudo cat /sys/block/sda/queue/scheduler noop deadline [cfq] $ sudo insmod /usr/lib/modules/4.19.8-300.fc29.x86_64/kernel/block/bfq.ko.xz $ sudo cat /sys/block/sda/queue/scheduler noop deadline [cfq] $ sudo lsmod | grep bfq bfq 69632 0 $
So yeah this seems a lot more difficult than it should be.
Chris Murphy
kernel@lists.fedoraproject.org