UDEV掛載EMC多路徑盤

我的儲存是EMC的，裝上多路徑軟體之後

[root@chnap-itd64 rules.d]# fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sda: 3597.3 GB, 3597303545856 bytes
255 heads, 63 sectors/track, 437347 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1      267350  2147483647+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdc: 2147.5 GB, 2147483648000 bytes
255 heads, 63 sectors/track, 261083 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1      261084  2097151999+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdb: 2147.5 GB, 2147483648000 bytes
255 heads, 63 sectors/track, 261083 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      261084  2097151999+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdd'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdd: 2147.5 GB, 2147483648000 bytes
255 heads, 63 sectors/track, 261083 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1      261084  2097151999+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sde: 2147.5 GB, 2147483648000 bytes
255 heads, 63 sectors/track, 261083 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1      261084  2097151999+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/emcpowera'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/emcpowera: 2147.5 GB, 2147483648000 bytes
255 heads, 63 sectors/track, 261083 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowera1               1      261084  2097151999+  ee  GPT


如果用下面的這種方式編輯規則檔案，udev設定是可以出來的

more 99-oracle-asmdevices.rules 

KERNEL=="sdb1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="36006016076f32e00745442a6f862e211", NAME="asm-disk1", OWNER="grid", GRO
UP="asmadmin", MODE="0660"

[root@chnap-itd64 rules.d]# /sbin/start_udev
正在啟動 udev：[確定]

[root@chnap-itd64 rules.d]# ls -l /dev/asm-disk*
brw-rw---- 1 grid asmadmin 8, 17 1月  28 20:00 /dev/asm-disk1

目前我想用 /dev/emcpowera 這個裝置繫結
但是沒有成功，是不是我的99-oracle-asmdevices.rules 
這個檔案的寫法不對。

多路徑軟體裝上之後一般/dev/emcpowera不會變，
雖然用/dev/sdb也可以繫結，也沒有影響，但是我想
用/dev/emcpowera裝置在多臺伺服器上繫結

[root@chnap-itd64 rules.d]# vi 99-oracle-asmdevices.rules 

KERNEL=="emcpowera1", BUS=="scsi", PROGRAM=="/sbin/scsi_id -g -u -d /dev/$parent", RESULT=="36006016076f32e00745442a6f862e211", NAME="asm-disk1", OWNER="grid", GROUP="asmadmin", MODE="0660"

[root@chnap-itd64 rules.d]# /sbin/start_udev
正在啟動 udev：[確定]
[root@chnap-itd64 rules.d]# /sbin/start_udev
[root@chnap-itd64 rules.d]# ls -l /dev/as*
ls: 無法訪問/dev/as*: 沒有那個檔案或目錄

 

 

原來在linux6 裡面如果要用這種方法做ASM的話。
需要在/etc/udev/rules.d 目錄上新增了50-udev.rules 檔案，
redhat 5 下面就有這個檔案，到redhat 6下就沒了
並把下列資訊加入50-udev.rules，現在在oracle上已經可以正常安裝asm了
[root@chnap-itd65 rules.d]# cat 50-udev.rules 
SUBSYSTEM=="block", KERNEL=="emcpowera1", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowera2", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowera3", GROUP="asmadmin", OWNER="grid", MODE="0660"
SUBSYSTEM=="block", KERNEL=="emcpowera4", GROUP="asmadmin", OWNER="grid", MODE="0660"

[root@chnap-itd65 rules.d]# start_udev 
正在啟動 udev：[確定]
[root@chnap-itd65 rules.d]# ls -l /dev/emc*
crw-rw---- 1 root root 10, 58 1月 29 19:33 /dev/emcpower
brw-rw---- 1 root disk 120, 0 1月 29 19:33 /dev/emcpowera
brw-rw---- 1 grid asmadmin 120, 1 1月 29 19:33 /dev/emcpowera1
brw-rw---- 1 grid asmadmin 120, 2 1月 29 19:33 /dev/emcpowera2
brw-rw---- 1 grid asmadmin 120, 3 1月 29 19:33 /dev/emcpowera3
brw-rw---- 1 grid asmadmin 120, 4 1月 29 19:33 /dev/emcpowera4

重啟udev的時候許可權已經正常了 
ASM可以正常配置使用了

該問題已經解決。

 

總結：已經有了emcpower，那直接在rc.local中修改許可權就好了，不用udev了。