On Wed, Dec 12, 2018 at 2:07 PM Jeff Moyer <jmoyer(a)redhat.com> wrote:
Chris Murphy <lists(a)colorremedies.com> writes:
> I used two boot params: scsi_mod.use_blk_mq=1 elevator=bfq. I don't
> think that's a good way for a distribution to set the default though.
You shouldn't need the "scsi_mod.use_blk_mq=1" option. As of 4.19,
scsi_mq is the default, and by 4.21 the legacy path will be gone. The
right way for the distro to set the default I/O scheduler is to use udev
Like I mentioned earlier in the thread, Fedora kernels does not set
scsi_mq as the default. I don't know why.
# CONFIG_SCSI_MQ_DEFAULT is not set