"elevator=deadline" not respected with kernel > 4.4.x

ordealbyfire83 · 05-17-2019, 09:45 AM

For various reasons I'm trying to set the default I/O scheduler at boot time. This is so that I don't have to set it for each storage device that I plug in after the OS is booted. In particular, I am specifying "elevator=deadline" but this is not respected, instead using noop (though deadline still seems available). This used to work with older kernels but not anymore. What to do now?

business_kid · 05-20-2019, 07:40 AM

I think a google of the LKML is in order.

ordealbyfire83 · 05-22-2019, 08:51 AM

Well I'll be darned. Deprecating elevator= certainly doesn't make life easier. For me this default 'noop' had better work, or else it's time to start reversing commits or ditch the SSD.