OS版本：RHEL6.4

1) 找出目标磁盘的分区别名

# dmsetup ls |grep data

data01  (253:9)

data04  (253:4)

data03  (253:3)

data02  (253:2)

# dmsetup ls |grep crs

crs03   (253:8)

crs02   (253:7)

crs01   (253:5)

2) 编写/etc/udev/rules.d/12-dm-permissions.rules规则文件

ENV{DM_NAME}=="data01", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="data02", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="data03", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="data04", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="crs01", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="crs02", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

ENV{DM_NAME}=="crs03", OWNER:="oragrid", GROUP:="asmadmin", MODE:="660", SYMLINK+="iscsi/asm-$env{DM_NAME}"

3) 重启多路径服务

# service multipathd restart

4) 检查权限是否设置正确

# ls -l /dev/dm*

brw-rw---- 1 root    disk     253,  0 Dec 15 14:18 /dev/dm-0

brw-rw---- 1 root    disk     253,  1 Dec 15 14:18 /dev/dm-1

brw-rw---- 1 root    disk     253, 10 Dec 15 14:18 /dev/dm-10

brw-rw---- 1 oragrid asmadmin 253,  2 Dec 15 14:18 /dev/dm-2

brw-rw---- 1 oragrid asmadmin 253,  3 Dec 15 14:18 /dev/dm-3

brw-rw---- 1 oragrid asmadmin 253,  4 Dec 15 14:18 /dev/dm-4

brw-rw---- 1 oragrid asmadmin 253,  5 Dec 15 14:18 /dev/dm-5

brw-rw---- 1 oragrid asmadmin 253,  7 Dec 15 14:18 /dev/dm-7

brw-rw---- 1 oragrid asmadmin 253,  8 Dec 15 14:18 /dev/dm-8

brw-rw---- 1 oragrid asmadmin 253,  9 Dec 15 14:18 /dev/dm-9

5) 确保多路径设备的ASM符号链接已经存在# ls -l /dev/iscsi/*

[root@ysdb1 ~]#  ls -l /dev/iscsi/*

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-crs01 -> ../dm-5

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-crs02 -> ../dm-7

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-crs03 -> ../dm-8

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-data01 -> ../dm-9

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-data02 -> ../dm-2

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-data03 -> ../dm-3

lrwxrwxrwx 1 root root 7 Dec 15 14:18 /dev/asm/asm-data04 -> ../dm-4