[OpenIndiana-discuss] Multipath IO Dual LSI 9211-8i

[Marion Hakanson]

john at xaccel.net said:
> Upgraded to openindiana oi_148 and now unit boots all the way and seems to be
> ok but the performance of the array has dropped from 500mps to 100mps. I am
> testing 13) 600gig 15k drives with 2 SSD's (log and cache). When I do a test
> I do see both controllers accessing the drives. Shouldn't one controller be
> the primary and the secondary just waiting? 

With mpxio enabled, the default is to use round-robin load-balancing.
On our Dell MD1200 JBOD's this makes things very slow.  Try setting
load-balance=none (in /kernel/drv/scsi_vhci.conf).  You can do this
on a per-device basis, or system-wide.

Regards,

Marion