Multipath多路径安装配置

1、先检查检查是否已经安装了多路径软件

lsmod |grep dm_multipath

multipath –ll

2、没有安装多路径软件的使用yum来安装多路径软件

yum install device-mapper-multipath

执行 multipath –ll 能成功就OK，不行的话看看是不是multipathd服务没有起来

service multipathd start

3、配置多路径配置文件，这个根据存储的不同，配置文件的内容稍有差异，这个让存储厂商提供给你

vim /etc/multipath.conf

[[email protected] ~]# cat /etc/multipath.conf
defaults {
    polling_interval 10
    max_fds 8192
    user_friendly_names yes
}
devices {
    device {
        vendor "3PARdata"
        product "VV"
        path_grouping_policy "group_by_prio"
        path_selector "round-robin 0"
        path_checker tur
        features "0"
        hardware_handler "1 alua"
        prio "alua"
        failback immediate
        rr_weight "uniform"
        no_path_retry 18
        rr_min_io_rq 1
        detect_prio yes
        fast_io_fail_tmo 10
        dev_loss_tmo "infinity"
    }
}

blacklist {
}

4、启用配置文件

mpathconf --enable

5、检查多路径情况

multipath –ll

mpathe (360002ac000000000000000110001dfd0) dm-4 3PARdata,VV
size=10G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:3 sdn  8:208  active ready running
| |- 2:0:0:3 sdao 66:128 active ready running
| |- 1:0:2:3 sdw  65:96  active ready running
| `- 2:0:2:3 sdbg 67:160 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:3 sde  8:64   active ghost running
  |- 2:0:1:3 sdax 67:16  active ghost running
  |- 1:0:3:3 sdaf 65:240 active ghost running
  `- 2:0:3:3 sdbp 68:48  active ghost running
mpathd (360002ac000000000000000100001dfd0) dm-3 3PARdata,VV
size=10G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:2 sdm  8:192  active ready running
| |- 2:0:0:2 sdan 66:112 active ready running
| |- 1:0:2:2 sdv  65:80  active ready running
| `- 2:0:2:2 sdbf 67:144 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:2 sdd  8:48   active ghost running
  |- 2:0:1:2 sdaw 67:0   active ghost running
  |- 1:0:3:2 sdae 65:224 active ghost running
  `- 2:0:3:2 sdbo 68:32  active ghost running
mpathc (360002ac0000000000000000f0001dfd0) dm-2 3PARdata,VV
size=10G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:1 sdl  8:176  active ready running
| |- 2:0:0:1 sdam 66:96  active ready running
| |- 1:0:2:1 sdu  65:64  active ready running
| `- 2:0:2:1 sdbe 67:128 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:1 sdc  8:32   active ghost running
  |- 2:0:1:1 sdav 66:240 active ghost running
  |- 1:0:3:1 sdad 65:208 active ghost running
  `- 2:0:3:1 sdbn 68:16  active ghost running
mpathb (360002ac000000000000000170001dfd0) dm-1 3PARdata,VV
size=1000G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:0 sdk  8:160  active ready running
| |- 2:0:0:0 sdal 66:80  active ready running
| |- 1:0:2:0 sdt  65:48  active ready running
| `- 2:0:2:0 sdbd 67:112 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:0 sdb  8:16   active ghost running
  |- 2:0:1:0 sdau 66:224 active ghost running
  |- 1:0:3:0 sdac 65:192 active ghost running
  `- 2:0:3:0 sdbm 68:0   active ghost running
mpathj (360002ac0000000000000001b0001dfd0) dm-9 3PARdata,VV
size=1.0T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:8 sds  65:32  active ready running
| |- 2:0:0:8 sdat 66:208 active ready running
| |- 1:0:2:8 sdab 65:176 active ready running
| `- 2:0:2:8 sdbl 67:240 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:8 sdj  8:144  active ghost running
  |- 2:0:1:8 sdbc 67:96  active ghost running
  |- 1:0:3:8 sdak 66:64  active ghost running
  `- 2:0:3:8 sdbu 68:128 active ghost running
mpathi (360002ac0000000000000001a0001dfd0) dm-8 3PARdata,VV
size=1.0T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:7 sdr  65:16  active ready running
| |- 2:0:0:7 sdas 66:192 active ready running
| |- 1:0:2:7 sdaa 65:160 active ready running
| `- 2:0:2:7 sdbk 67:224 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:7 sdi  8:128  active ghost running
  |- 2:0:1:7 sdbb 67:80  active ghost running
  |- 1:0:3:7 sdaj 66:48  active ghost running
  `- 2:0:3:7 sdbt 68:112 active ghost running
mpathh (360002ac000000000000000190001dfd0) dm-7 3PARdata,VV
size=1020G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:6 sdq  65:0   active ready running
| |- 2:0:0:6 sdar 66:176 active ready running
| |- 1:0:2:6 sdz  65:144 active ready running
| `- 2:0:2:6 sdbj 67:208 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:6 sdh  8:112  active ghost running
  |- 2:0:1:6 sdba 67:64  active ghost running
  |- 1:0:3:6 sdai 66:32  active ghost running
  `- 2:0:3:6 sdbs 68:96  active ghost running
mpathg (360002ac000000000000000180001dfd0) dm-6 3PARdata,VV
size=1010G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:5 sdp  8:240  active ready running
| |- 2:0:0:5 sdaq 66:160 active ready running
| |- 1:0:2:5 sdy  65:128 active ready running
| `- 2:0:2:5 sdbi 67:192 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:5 sdg  8:96   active ghost running
  |- 2:0:1:5 sdaz 67:48  active ghost running
  |- 1:0:3:5 sdah 66:16  active ghost running
  `- 2:0:3:5 sdbr 68:80  active ghost running
mpathf (360002ac000000000000000120001dfd0) dm-5 3PARdata,VV
size=500G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:4 sdo  8:224  active ready running
| |- 2:0:0:4 sdap 66:144 active ready running
| |- 1:0:2:4 sdx  65:112 active ready running
| `- 2:0:2:4 sdbh 67:176 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  |- 1:0:0:4 sdf  8:80   active ghost running
  |- 2:0:1:4 sday 67:32  active ghost running
  |- 1:0:3:4 sdag 66:0   active ghost running
  `- 2:0:3:4 sdbq 68:64  active ghost running

如果没有起效，则reboot之后再检查，有时候存储映射过来需要重启os才能识别到