On 11/05/2016 06:40 AM, Steven Tardy wrote: > What firmware is/are on the cards? In the dmesg output I included: mpt3sas0: LSISAS3008: FWVersion(10.00.00.00), ChipRevision(0x02), BiosVersion(08.25.00.00) > The driver version difference between C6 and C7 could interact badly with old firmware. I suspected that was the case, and tried running elrepo's "kmod-mpt3sas" from their testing repo. C7 has version 04.100.00.00, while elrepo's appears to be 13.100.00.00. That didn't change anything. > What firmware does $vendor suggest? Haven't asked yet, since the same firmware produces different behavior on the two OSs. > Does C7 in BIOS mode work any better? That'll be one of my next tests. > Run `lsiget` and compare lsi tech support bundles. I'll look around for that, too. No vendor tools are installed, currently.