Comment # 7 on bug 1122182 from Ruediger Oertel

done ... works.

scsi_mod.use_blk_mq=y

obs-power8-01:~ # multipath -ll
1IBM_IPR-10_5ECDEA0000000020 dm-0 IBM,IPR-10  5ECDEA00
size=532G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 0:2:0:0 sda 8:0  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 3:2:0:0 sdc 8:32 active ready running
1IBM_IPR-0_5ECDEA0000000060 dm-1 IBM,IPR-0   5ECDEA00
size=3.1T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 0:2:1:0 sdb 8:16 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 3:2:1:0 sdd 8:48 active ready running