在<Why ASMLIB and why not?>我們介紹了使用ASMLIB作爲一種專門爲Oracle Automatic Storage Management特性設計的內核支持庫(kernel support library)的優缺點,同時建議使用成熟的UDEV方案來替代ASMLIB。
這裏我們就給出配置UDEV的具體步驟,還是比較簡單的:
1.確認在所有RAC節點上已經安裝了必要的UDEV包 [root@rh2 ~]# rpm -qa|grep udev udev-095-14.21.el5 2.通過scsi_id獲取設備的塊設備的唯一標識名,假設系統上已有LUN sdc-sdp for i in c d e f g h i j k l m n o p ; do echo "sd$i" "`scsi_id -g -u -s /block/sd$i` "; done sdc 1IET_00010001 sdd 1IET_00010002 sde 1IET_00010003 sdf 1IET_00010004 sdg 1IET_00010005 sdh 1IET_00010006 sdi 1IET_00010007 sdj 1IET_00010008 sdk 1IET_00010009 sdl 1IET_0001000a sdm 1IET_0001000b sdn 1IET_0001000c sdo 1IET_0001000d sdp 1IET_0001000e 以上列出於塊設備名對應的唯一標識名 3.創建必要的UDEV配置文件, 首先切換到配置文件目錄 [root@rh2 ~]# cd /etc/udev/rules.d 定義必要的規則配置文件 [root@rh2 rules.d]# touch 99-oracle-asmdevices.rules [root@rh2 rules.d]# cat 99-oracle-asmdevices.rules KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010001", NAME="ocr1", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010002", NAME="ocr2", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010003", NAME="asm-disk1", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010004", NAME="asm-disk2", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010005", NAME="asm-disk3", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010006", NAME="asm-disk4", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010007", NAME="asm-disk5", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010008", NAME="asm-disk6", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_00010009", NAME="asm-disk7", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_0001000a", NAME="asm-disk8", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_0001000b", NAME="asm-disk9", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_0001000c", NAME="asm-disk10", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_0001000d", NAME="asm-disk11", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -s %p", RESULT=="1IET_0001000e", NAME="asm-disk12", OWNER="grid", GROUP="asmadmin", MODE="0660" Result 爲/sbin/scsi_id -g -u -s %p的輸出--Match the returned string of the last PROGRAM call. This key may be used in any following rule after a PROGRAM call. 按順序填入剛纔獲取的唯一標識名即可 OWNER爲安裝Grid Infrastructure的用戶,在11gr2中一般爲grid,GROUP爲asmadmin MODE採用0660即可 NAME爲UDEV映射後的設備名, 建議爲OCR和VOTE DISK創建獨立的DISKGROUP,爲了容易區分將該DISKGROUP專用的設備命名爲ocr1..ocrn的形式 其餘磁盤可以根據其實際用途或磁盤組名來命名 4.將該規則文件拷貝到其他節點上 [root@rh2 rules.d]# scp 99-oracle-asmdevices.rules Other_node:/etc/udev/rules.d 5.在所有節點上啓動udev服務,或者重啓服務器即可 [root@rh2 rules.d]# /sbin/udevcontrol reload_rules [root@rh2 rules.d]# /sbin/start_udev Starting udev: [ OK ] 6.檢查設備是否到位 [root@rh2 rules.d]# cd /dev [root@rh2 dev]# ls -l ocr* brw-rw---- 1 grid asmadmin 8, 32 Jul 10 17:31 ocr1 brw-rw---- 1 grid asmadmin 8, 48 Jul 10 17:31 ocr2 [root@rh2 dev]# ls -l asm-disk* brw-rw---- 1 grid asmadmin 8, 64 Jul 10 17:31 asm-disk1 brw-rw---- 1 grid asmadmin 8, 208 Jul 10 17:31 asm-disk10 brw-rw---- 1 grid asmadmin 8, 224 Jul 10 17:31 asm-disk11 brw-rw---- 1 grid asmadmin 8, 240 Jul 10 17:31 asm-disk12 brw-rw---- 1 grid asmadmin 8, 80 Jul 10 17:31 asm-disk2 brw-rw---- 1 grid asmadmin 8, 96 Jul 10 17:31 asm-disk3 brw-rw---- 1 grid asmadmin 8, 112 Jul 10 17:31 asm-disk4 brw-rw---- 1 grid asmadmin 8, 128 Jul 10 17:31 asm-disk5 brw-rw---- 1 grid asmadmin 8, 144 Jul 10 17:31 asm-disk6 brw-rw---- 1 grid asmadmin 8, 160 Jul 10 17:31 asm-disk7 brw-rw---- 1 grid asmadmin 8, 176 Jul 10 17:31 asm-disk8 brw-rw---- 1 grid asmadmin 8, 192 Jul 10 17:31 asm-disk9
(轉自:http://www.askmaclean.com/archives/utilize-udev-resolve-11gr2-rac-asm-device-name.html)