4、命令
[root@web2 ~]# multipath -h multipath-tools v0.4.7 (03/12, 2006) Usage: multipath [-v level] [-d] [-h|-l|-ll|-f|-F|-r] [-p failover|multibus|group_by_serial|group_by_prio] [device] -v level verbosity level 0 no output 1 print created devmap names only 2 default verbosity 3 print debug information -h print this usage text -b file bindings file location -d dry run, do not create or update devmaps -l show multipath topology (sysfs and DM info) -ll show multipath topology (maximum info) -f flush a multipath device map -F flush all multipath device maps -r force devmap reload -p policy force all maps to specified policy : failover 1 path per priority group multibus all paths in 1 priority group group_by_serial 1 priority group per serial group_by_prio 1 priority group per priority lvl group_by_node_name 1 priority group per target node device limit scope to the device's multipath (udev-style $DEVNAME reference, eg /dev/sdb or major:minor or a device map name) [root@web2 ~]# |
5、启动关闭
# /etc/init.d/multipathd start #开启mulitipath服务
service multipath start
service multipath restart
service multipath shutdown
6、如何获取wwid
1、
[root@vxfs01 ~]# cat /var/lib/multipath/bindings
# Multipath bindings, Version : 1.0
# NOTE: this file is automatically maintained by the multipath program.
# You should not need to edit this file in normal circumstances.
#
# Format:
# alias wwid
#
mpath0 36006016051d50e0035744871c912de11
mpath1 36006016051d50e0034744871c912de11
mpath2 36006016051d50e0032744871c912de11
mpath3 36006016051d50e0039744871c912de11
mpath4 36006016051d50e003a744871c912de11
2、
[root@vxfs01 ~]# multipath -v3 |grep 3600
sdb: uid = 36006016051d50e003a744871c912de11 (callout)
sdc: uid = 36006016051d50e003a744871c912de11 (callout)
sdd: uid = 36006016051d50e003a744871c912de11 (callout)
sde: uid = 36006016051d50e003a744871c912de11 (callout)
36006016051d50e003a744871c912de11 1:0:0:0 sdb 8:16 0 [undef][ready] DGC,RAI
36006016051d50e003a744871c912de11 1:0:1:0 sdc 8:32 1 [undef][ready] DGC,RAI
36006016051d50e003a744871c912de11 2:0:0:0 sdd 8:48 1 [undef][ready] DGC,RAI
36006016051d50e003a744871c912de11 2:0:1:0 sde 8:64 0 [undef][ready] DGC,RAI
Found matching wwid [36006016051d50e003a744871c912de11] in bindings file.
