[CentOS] Avago (LSI) SAS-3 controller, poor performance on CentOS 7

Sat Nov 5 19:08:41 UTC 2016
Gordon Messmer <gordon.messmer at gmail.com>

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(, ChipRevision(0x02), 

> 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, while elrepo's 
appears to be  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.