RHEL multipath配置操作记录
author : Leung
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*版权所有，学习使用，谢绝商用。*
RHEL multipath配置操作记录
操作步骤如下：
描述
新增4台服务器,主机名分别为san_host1、san_host2、san_host3、san_host4，每台机器已划分有独立的存储（3T/3T/3T/5T）目前已经接好HBA卡并正确识别硬件多路径，需要按以下方式挂载文件系统:
1、san_host1 单独挂3T文件系统,文件系统目录名称/data01;
2、san_host2 单独挂3T文件系统,文件系统目录名称/data01;
3、san_host3 单独挂3T文件系统,文件系统目录名称/data01;
4、san_host4 划分4T空间用于数据库裸设备，另外1T空间建立文件系统挂载目录为/data01。
规划
配置操作记录
配置多路径
分别在四台服务器上执行：
[root@localhost ~]# multipath -ll
May 13 10:00:50 | /etc/multipath.conf does not exist, blacklisting all devices.
May 13 10:00:50 | A sample multipath.conf file is located at
May 13 10:00:50 | /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf
May 13 10:00:50 | You can run /sbin/mpathconf to create or modify /etc/multipath.conf
May 13 10:00:50 | DM multipath kernel driver not loaded
[root@localhost ~]# service multipathd status
multipathd 已停
[root@localhost ~]# service multipathd start
正在启动守护进程multipathd：[确定]
[root@localhost ~]# mpathconf --enable --find_multipaths y --with_module y
[root@localhost ~]# mpathconf
multipath is enabled
find_multipaths is enabled
user_friendly_names is enabled
dm_multipath module is loaded
multipathd is chkconfiged off
[root@localhost ~]# multipath -l #检查是否有多路径信息输出
mpathc (3600507680180861ce0000000000000a3) dm-5 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=-1 status=active
| |- 1:0:1:1 sdf 8:80 active undef running
| |- 1:0:0:1 sdc 8:32 active undef running
| |- 3:0:1:1 sdr 65:16 active undef running
| `- 3:0:0:1 sdo 8:224 active undef running
`-+- policy='round-robin 0' prio=-1 status=enabled
|- 1:0:2:1 sdi 8:128 active undef running
|- 1:0:3:1 sdl 8:176 active undef running
|- 3:0:2:1 sdu 65:64 active undef running
`- 3:0:3:1 sdx 65:112 active undef running
mpathb (3600507680180861ce0000000000000a2) dm-4 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=-1 status=active
| |- 1:0:2:0 sdh 8:112 active undef running
| |- 1:0:3:0 sdk 8:160 active undef running
| |- 3:0:2:0 sdt 65:48 active undef running
| `- 3:0:3:0 sdw 65:96 active undef running
`-+- policy='round-robin 0' prio=-1 status=enabled
|- 1:0:1:0 sde 8:64 active undef running
|- 1:0:0:0 sdb 8:16 active undef running
|- 3:0:0:0 sdn 8:208 active undef running
`- 3:0:1:0 sdq 65:0 active undef running
mpatha (3600507680180861ce0000000000000a4) dm-3 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=-1 status=active
| |- 1:0:2:2 sdj 8:144 active undef running
| |- 1:0:3:2 sdm 8:192 active undef running
| |- 3:0:2:2 sdv 65:80 active undef running
| `- 3:0:3:2 sdy 65:128 active undef running
`-+- policy='round-robin 0' prio=-1 status=enabled
|- 1:0:0:2 sdd 8:48 active undef running
|- 1:0:1:2 sdg 8:96 active undef running
|- 3:0:0:2 sdp 8:240 active undef running
`- 3:0:1:2 sds 65:32 active undef running
在主机san_host1上执行：
修改wwid与设备对应关系：
[root@localhost ~]# vi /etc/multipath/bindings
mpatha 3600507680180861ce0000000000000a2
mpathb 3600507680180861ce0000000000000a3
mpathc 3600507680180861ce0000000000000a4
删除原多路径映表，并重建：
[root@localhost ~]# multipath -F
[root@localhost ~]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
[root@localhost ~]# multipath -ll
mpathc (3600507680180861ce0000000000000a4) dm-3 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:2 sdj 8:144 active ready running
| |- 1:0:3:2 sdm 8:192 active ready running
| |- 3:0:2:2 sdv 65:80 active ready running
| `- 3:0:3:2 sdy 65:128 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:0:2 sdd 8:48 active ready running
|- 1:0:1:2 sdg 8:96 active ready running
|- 3:0:0:2 sdp 8:240 active ready running
`- 3:0:1:2 sds 65:32 active ready running
mpathb (3600507680180861ce0000000000000a3) dm-5 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:1 sdf 8:80 active ready running
| |- 1:0:0:1 sdc 8:32 active ready running
| |- 3:0:1:1 sdr 65:16 active ready running
| `- 3:0:0:1 sdo 8:224 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:1 sdi 8:128 active ready running
|- 1:0:3:1 sdl 8:176 active ready running
|- 3:0:2:1 sdu 65:64 active ready running
`- 3:0:3:1 sdx 65:112 active ready running
mpatha (3600507680180861ce0000000000000a2) dm-4 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:0 sdh 8:112 active ready running
| |- 1:0:3:0 sdk 8:160 active ready running
| |- 3:0:2:0 sdt 65:48 active ready running
| `- 3:0:3:0 sdw 65:96 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:1:0 sde 8:64 active ready running
|- 1:0:0:0 sdb 8:16 active ready running
|- 3:0:0:0 sdn 8:208 active ready running
`- 3:0:1:0 sdq 65:0 active ready running
在主机san_host2上执行：
[root@localhost ~]# vi /etc/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
#
mpatha 3600507680180861ce000000000000097
mpathb 3600507680180861ce000000000000098
mpathc 3600507680180861ce000000000000099
[root@localhost ~]# multipath -F
[root@localhost ~]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
[root@localhost ~]# multipath -ll
mpathc (3600507680180861ce000000000000099) dm-4 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:0:2 sdd 8:48 active ready running
| |- 1:0:1:2 sdg 8:96 active ready running
| |- 3:0:0:2 sdp 8:240 active ready running
| `- 3:0:1:2 sds 65:32 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:2 sdj 8:144 active ready running
|- 1:0:3:2 sdm 8:192 active ready running
|- 3:0:2:2 sdv 65:80 active ready running
`- 3:0:3:2 sdy 65:128 active ready running
mpathb (3600507680180861ce000000000000098) dm-3 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:1 sdi 8:128 active ready running
| |- 1:0:3:1 sdl 8:176 active ready running
| |- 3:0:2:1 sdu 65:64 active ready running
| `- 3:0:3:1 sdx 65:112 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:0:1 sdc 8:32 active ready running
|- 1:0:1:1 sdf 8:80 active ready running
|- 3:0:0:1 sdo 8:224 active ready running
`- 3:0:1:1 sdr 65:16 active ready running
mpatha (3600507680180861ce000000000000097) dm-5 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:0 sde 8:64 active ready running
| |- 1:0:0:0 sdb 8:16 active ready running
| |- 3:0:0:0 sdn 8:208 active ready running
| `- 3:0:1:0 sdq 65:0 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:0 sdh 8:112 active ready running
|- 1:0:3:0 sdk 8:160 active ready running
|- 3:0:2:0 sdt 65:48 active ready running
`- 3:0:3:0 sdw 65:96 active ready running
在主机san_host3上执行：
[root@localhost ~]# vi /etc/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
#
mpatha 3600507680180861ce00000000000009a
mpathb 3600507680180861ce00000000000009b
mpathc 3600507680180861ce00000000000009c
[root@localhost ~]# multipath -F
[root@localhost ~]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
[root@localhost ~]# multipath -ll
mpathc (3600507680180861ce00000000000009c) dm-3 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:2 sdj 8:144 active ready running
| |- 1:0:3:2 sdm 8:192 active ready running
| |- 3:0:2:2 sdv 65:80 active ready running
| `- 3:0:3:2 sdy 65:128 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:0:2 sdd 8:48 active ready running
|- 1:0:1:2 sdg 8:96 active ready running
|- 3:0:0:2 sdp 8:240 active ready running
`- 3:0:1:2 sds 65:32 active ready running
mpathb (3600507680180861ce00000000000009b) dm-5 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:1:1 sdf 8:80 active ready running
| |- 1:0:0:1 sdc 8:32 active ready running
| |- 3:0:1:1 sdr 65:16 active ready running
| `- 3:0:0:1 sdo 8:224 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:1 sdi 8:128 active ready running
|- 1:0:3:1 sdl 8:176 active ready running
|- 3:0:2:1 sdu 65:64 active ready running
`- 3:0:3:1 sdx 65:112 active ready running
mpatha (3600507680180861ce00000000000009a) dm-4 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:3:0 sdk 8:160 active ready running
| |- 1:0:2:0 sdh 8:112 active ready running
| |- 3:0:2:0 sdt 65:48 active ready running
| `- 3:0:3:0 sdw 65:96 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:1:0 sde 8:64 active ready running
|- 1:0:0:0 sdb 8:16 active ready running
|- 3:0:1:0 sdq 65:0 active ready running
`- 3:0:0:0 sdn 8:208 active ready running
在主机san_host4上执行：
[root@localhost ~]# vi /etc/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
#
mpatha 3600507680180861ce00000000000009d
mpathb 3600507680180861ce00000000000009e
mpathc 3600507680180861ce00000000000009f
mpathd 3600507680180861ce0000000000000a0
mpathe 3600507680180861ce0000000000000a1
[root@localhost ~]# multipath -F
[root@localhost ~]# service multipathd restart
正在关闭multipathd 端口监控程序：[确定]
正在启动守护进程multipathd：[确定]
[root@localhost ~]# multipath -ll
mpathe (3600507680180861ce0000000000000a1) dm-5 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:0:4 sdf 8:80 active ready running
| |- 1:0:1:4 sdk 8:160 active ready running
| |- 3:0:0:4 sdz 65:144 active ready running
| `- 3:0:1:4 sdae 65:224 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:4 sdp 8:240 active ready running
|- 1:0:3:4 sdu 65:64 active ready running
|- 3:0:3:4 sdao 66:128 active ready running
`- 3:0:2:4 sdaj 66:48 active ready running
mpathd (3600507680180861ce0000000000000a0) dm-4 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:3 sdo 8:224 active ready running
| |- 1:0:3:3 sdt 65:48 active ready running
| |- 3:0:3:3 sdan 66:112 active ready running
| `- 3:0:2:3 sdai 66:32 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:0:3 sde 8:64 active ready running
|- 1:0:1:3 sdj 8:144 active ready running
|- 3:0:0:3 sdy 65:128 active ready running
`- 3:0:1:3 sdad 65:208 active ready running
mpathc (3600507680180861ce00000000000009f) dm-3 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:0:2 sdd 8:48 active ready running
| |- 1:0:1:2 sdi 8:128 active ready running
| |- 3:0:0:2 sdx 65:112 active ready running
| `- 3:0:1:2 sdac 65:192 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:2 sdn 8:208 active ready running
|- 1:0:3:2 sds 65:32 active ready running
|- 3:0:2:2 sdah 66:16 active ready running
`- 3:0:3:2 sdam 66:96 active ready running
mpathb (3600507680180861ce00000000000009e) dm-2 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:2:1 sdm 8:192 active ready running
| |- 1:0:3:1 sdr 65:16 active ready running
| |- 3:0:2:1 sdag 66:0 active ready running
| `- 3:0:3:1 sdal 66:80 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:0:1 sdc 8:32 active ready running
|- 1:0:1:1 sdh 8:112 active ready running
|- 3:0:0:1 sdw 65:96 active ready running
`- 3:0:1:1 sdab 65:176 active ready running
mpatha (3600507680180861ce00000000000009d) dm-6 IBM,2145
size=1.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 1:0:0:0 sdb 8:16 active ready running
| |- 1:0:1:0 sdg 8:96 active ready running
| |- 3:0:0:0 sdv 65:80 active ready running
| `- 3:0:1:0 sdaa 65:160 active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
|- 1:0:2:0 sdl 8:176 active ready running
|- 1:0:3:0 sdq 65:0 active ready running
|- 3:0:2:0 sdaf 65:240 active ready running
`- 3:0:3:0 sdak 66:64 active ready running
2,创建lv及文件系统
在san_host1/san_host2/san_host3这三台主机上执行如下操作：
pvcreate /dev/mapper/mpatha
pvcreate /dev/mapper/mpathb
pvcreate /dev/mapper/mpathc
vgcreate datavg /dev/mapper/mpatha /dev/mapper/mpathb /dev/mapper/mpathc
vgdisplay datavg
lvcreate -n lv_data01 -l 786400 datavg
lvs
mkfs.ext3 /dev/mapper/datavg-lv_data01
mkdir /data01
mount /dev/mapper/datavg-lv_data01 /data01/
vi /etc/fstab
加入一行：
/dev/mapper/datavg-lv_data01 /data01 ext3 defaults 1 3
同步磁盘数据并重启
[root@localhost ~]# sync
[root@localhost ~]# reboot
重启后查看检查mulitpath设备及wwid是否对应，df查看文件系统/data01是否正常挂载
在san_host4执行如下操作：
pvcreate /dev/mapper/mpatha
vgcreate datavg /dev/mapper/mpatha
vgdisplay datavg
lvcreate -n lv_data01 -l 262100 datavg
lvs
mkfs.ext3 /dev/mapper/datavg-lv_data01
mkdir /data01
mount /dev/mapper/datavg-lv_data01 /data01/
vi /etc/fstab
加入
/dev/mapper/datavg-lv_data01 /data01 ext3 defaults 1 3
同步磁盘数据并重启
[root@localhost ~]# sync
[root@localhost ~]# reboot
重启后查看检查mulitpath设备及wwid是否对应，df查看文件系统/data01是否正常挂载
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