Why does the 'elevator=' parameter no longer work in RHEL8

Solution Verified - Updated -


  • Tried to set the I/O scheduler using elevator=bfq on the grub line, but it did not change the scheduler
[root@host]# cat /proc/cmdline 
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-4.18.0-57.el8.x86_64 root=/dev/mapper/rhel-root ro crashkernel=auto resume=/dev/mapper/rhel-swap rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap transparent_hugepage=never elevator=kyber

[root@host]# cat /sys/block/sdc/queue/scheduler 
[mq-deadline] kyber bfq none


  • Red Hat Enterprise Linux 8

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