[OpenIndiana-discuss] Multipath IO Dual LSI 9211-8i
hakansom at ohsu.edu
Tue Feb 8 20:02:35 UTC 2011
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.
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