[root@zz0102lintxs04 ~]# multipathd -k
multipathd> 

2、检查当前生效的配置文件内容：

multipathd> show config
defaults {
	verbosity 2
	polling_interval 10
	udev_dir "/dev"
	multipath_dir "/lib64/multipath"
	path_selector "round-robin 0"
	path_grouping_policy failover
	getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
	prio const
	features "0"
	path_checker directio
	failback manual
	rr_min_io 1000
	rr_min_io_rq 1
	max_fds 1048576
	rr_weight uniform
	queue_without_daemon no
	hwtable_regex_match no
	checker_timeout 120
	flush_on_last_del yes
	user_friendly_names yes
	find_multipaths no
	log_checker_err always
	retain_attached_hw_handler no
	detect_prio no
	reload_readwrite no
	replace_wwid_whitespace no
	force_sync no
	skip_kpartx no
	config_dir "/etc/multipath/conf.d"
	delay_watch_checks no
	delay_wait_checks no
	disable_changed_wwids no
}
blacklist {
	devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
	devnode "^(td|hd)[a-z]"
	devnode "^dcssblk[0-9]*"
	wwid "35000cca018649a80"
	device {
		vendor "DGC"
		product "LUNZ"
	}
	device {
		vendor "EMC"
		product "LUNZ"
	}
	device {
		vendor "IBM"
		product "Universal Xport"
	}
	device {
		vendor "IBM"
		product "S/390.*"
	}
	device {
		vendor "DELL"
		product "Universal Xport"
	}
	device {
		vendor "SGI"
		product "Universal Xport"
	}
	device {
		vendor "STK"
		product "Universal Xport"
	}
	device {
		vendor "SUN"
		product "Universal Xport"
	}
	device {
		vendor "(NETAPP|LSI|ENGENIO)"
		product "Universal Xport"
	}
}
blacklist_exceptions {
}
devices {
	device {
		vendor "MacroSAN"
		product "LU"
		path_grouping_policy group_by_prio
		getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
		path_selector "round-robin 0"
		path_checker tur
		hardware_handler "0"
		prio alua
		failback 15
		no_path_retry 30
	}
#.............  #省略大部分都是multipath默认配置
multipaths {
	multipath {
		wwid 3600b342505dda17de293dbd26d0000de
		alias mpatha
	}
	multipath {
		wwid 3600b34282e3a4d8d7412d9960dc800d6
		alias mpathc
	}
}
multipathd> 
multipathd> 

multipathd> show devices
available block devices:
    ram0 devnode blacklisted, unmonitored
    ram1 devnode blacklisted, unmonitored
    ram2 devnode blacklisted, unmonitored
    ram3 devnode blacklisted, unmonitored
    ram4 devnode blacklisted, unmonitored
    ram5 devnode blacklisted, unmonitored
    ram6 devnode blacklisted, unmonitored
    ram7 devnode blacklisted, unmonitored
    ram8 devnode blacklisted, unmonitored
    ram9 devnode blacklisted, unmonitored
    ram10 devnode blacklisted, unmonitored
    ram11 devnode blacklisted, unmonitored
    ram12 devnode blacklisted, unmonitored
    ram13 devnode blacklisted, unmonitored
    ram14 devnode blacklisted, unmonitored
    ram15 devnode blacklisted, unmonitored
    loop0 devnode blacklisted, unmonitored
    loop1 devnode blacklisted, unmonitored
    loop2 devnode blacklisted, unmonitored
    loop3 devnode blacklisted, unmonitored
    loop4 devnode blacklisted, unmonitored
    loop5 devnode blacklisted, unmonitored
    loop6 devnode blacklisted, unmonitored
    loop7 devnode blacklisted, unmonitored
    sdc devnode whitelisted, monitored
    sdd devnode whitelisted, monitored
    sde devnode whitelisted, monitored
    sdb devnode whitelisted, monitored
    sda devnode whitelisted, unmonitored
    sr0 devnode blacklisted, unmonitored
    sdf devnode whitelisted, monitored
    dm-0 devnode blacklisted, unmonitored
    dm-1 devnode blacklisted, unmonitored
    sdh devnode whitelisted, monitored
    sdi devnode whitelisted, monitored
    sdg devnode whitelisted, monitored
    dm-2 devnode blacklisted, unmonitored
    dm-3 devnode blacklisted, unmonitored
    sdj devnode whitelisted, monitored
    sdk devnode whitelisted, monitored
    dm-4 devnode blacklisted, unmonitored
multipathd>