multipath

daiqizhi

defaults {
	user_friendly_names yes
	find_multipaths yes
}

devices {
	device {
        vendor                      "HUAWEI"     
        product                     "XSG1"  
        path_grouping_policy        multibus
        path_checker                tur
        prio                        const
        path_selector               "service-time 0"
        failback                    immediate
	}
}
multipaths {
    multipath {
        wwid                  3644a191101a4fe902c2be00c00000009
        alias                 mdt
    }
}

daiqizhi

echo '- - -' > /sys/class/scsi_host/host17/scan 

multipath -r