tweak the sas io unit to use 32 openings when talking to sata disks if the firmware has it configured lower.
tweak the sas io unit to use 32 openings when talking to sata disks if the
firmware has it configured lower.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars