一、識別硬碟的scsi_id(/sbin/scsi_id)## 標題 ##

RHEL5

# /sbin/scsi_id -g -u -s /block/sdb
SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_

RHEL6

# /sbin/scsi_id -g -u -d /dev/sdb
SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_

RHEL7

# /usr/lib/udev/scsi_id -g -u -d /dev/sdb
SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_

二、使SCSI裝置可信## 標題 ##
編輯檔案 “/etc/scsi_id.config”.

options=-g

三、建立UDEV Rules File（以分割槽為物件而不是硬碟）## 標題 ##

編輯檔案etc/udev/rules.d/99-oracle-asmdevices.rules” .

# vi /etc/udev/rules.d/99-oracle-asmdevices.rules

RHEL5

KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s /block/$parent", RESULT=="SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_", NAME="asm-disk1"
 
, OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s /block/$parent", RESULT=="SATA_VBOX_HARDDISK_VB46dec7e0-192e8000_", NAME="asm-disk2", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s /block/$parent", RESULT=="SATA_VBOX_HARDDISK_VBce8c63bb-ac67a172_"
 
, NAME="asm-disk3", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s /block/$parent", RESULT=="SATA_VBOX_HARDDISK_VB7437a3b7-95b199cd_", NAME="asm-disk4", OWNER="oracle", GROUP="dba", MODE="0660"

RHEL6.

KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_", NAME="asm-disk1", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VB46dec7e0-192e8000_", NAME="asm-disk2", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VBce8c63bb-ac67a172_", NAME="asm-disk3", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VB7437a3b7-95b199cd_", NAME="asm-disk4", OWNER="oracle", GROUP="dba", MODE="0660"

RHEL7

KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VBd306dbe0-df3367e3_", SYMLINK+="asm-disk1", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VB46dec7e0-192e8000_", SYMLINK+="asm-disk2", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VBce8c63bb-ac67a172", SYMLINK+="asm-disk3", OWNER="oracle", GROUP="dba", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="SATA_VBOX_HARDDISK_VB7437a3b7-95b199cd_", SYMLINK+="asm-disk4", OWNER="oracle", GROUP="dba", MODE="0660"

四、載入更新後的塊裝置 (/sbin/partprobe)## 標題 ##

# /sbin/partprobe /dev/sdb1
# /sbin/partprobe /dev/sdc1
# /sbin/partprobe /dev/sdd1
# /sbin/partprobe /dev/sde1

五、測試rule檔案 (udevtest)## 標題 ##
RHEL5

# udevtest /block/sdb/sdb1
# udevtest /block/sdc/sdc1
# udevtest /block/sdd/sdd1
# udevtest /block/sde/sde1

RHEL6 and RHEL7

# udevadm test /block/sdb/sdb1
# udevadm test /block/sdc/sdc1
# udevadm test /block/sdd/sdd1
# udevadm test /block/sde/sde1

六、重啟UDEV Service## 標題 ##
RHEL5

# /sbin/udevcontrol reload_rules

RHEL6 and RHEL7

# udevadm control --reload-rules

RHEL5 and RHEL6（RHEL7不需要）

# /sbin/start_udev

七、檢視所有者和許可權## 標題 ##

# cd /dev
# ls -al asm-disk*
brw-rw---- 1 oracle dba 8, 17 Apr  8 22:47 asm-disk1
brw-rw---- 1 oracle dba 8, 33 Apr  8 22:47 asm-disk2
brw-rw---- 1 oracle dba 8, 49 Apr  8 22:47 asm-disk3
brw-rw---- 1 oracle dba 8, 65 Apr  8 22:47 asm-disk4

附：在OL 6上建立UDEV規則，以硬碟為單位而不是分割槽

KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$name", RESULT=="36001405a6f3fb71b9c5470894e6a2f4d", NAME="asm-disk1", OWNER="grid", GROUP="dba", MODE="0660"
KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$name", RESULT=="3600140537d716c0e80d445d9fb330d3f", NAME="asm-disk2", OWNER="grid", GROUP="dba", MODE="0660"
KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$name", RESULT=="360014058f70453d23c7493dae489a42d", NAME="asm-disk3", OWNER="grid", GROUP="dba", MODE="0660"