Linux 7下使用udev繫結ASM磁碟

abstractcyj發表於2017-11-20
LinuxdevASM
for disk in `ls /dev/sd*`
                  do
                    echo $disk
                    /usr/lib/udev/scsi_id --whitelisted --replace-whitespace --device=$disk
                  done

--產生裝置的UUID
[root@db12c_01 ~]# for disk in `ls /dev/sd*`
>                   do
>                     echo $disk
>                     /usr/lib/udev/scsi_id --whitelisted --replace-whitespace --device=$disk
>                   done
/dev/sda
36000c296553b7ac67e22e3e60ac04462
/dev/sda1
36000c296553b7ac67e22e3e60ac04462
/dev/sda2
36000c296553b7ac67e22e3e60ac04462
/dev/sdb
36000c298981418c7e8a25a89d0f836c9
/dev/sdb1
36000c298981418c7e8a25a89d0f836c9
/dev/sdc
36000c29dce09d16de88f435217838c9e
/dev/sdc1
36000c29dce09d16de88f435217838c9e
/dev/sdd
36000c29c3438303241fd1291834b1bd0
/dev/sdd1
36000c29c3438303241fd1291834b1bd0
/dev/sde
36000c291dec502efa9d3ae53c99f0028
/dev/sde1
36000c291dec502efa9d3ae53c99f0028
/dev/sdf
36000c29e29a4bcd75acea14e982ea49d
/dev/sdf1
36000c29e29a4bcd75acea14e982ea49d
/dev/sdg
36000c290ecd14020e2c7f41ee6a2916a
/dev/sdg1
36000c290ecd14020e2c7f41ee6a2916a

對映檔案： /etc/udev/rules.d/99-oracle-asmdevices.rules
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="36000c298981418c7e8a25a89d0f836c9", SYMLINK+="asm-diskb", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="36000c29dce09d16de88f435217838c9e", SYMLINK+="asm-diskc", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="36000c29c3438303241fd1291834b1bd0", SYMLINK+="asm-diskd", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="36000c291dec502efa9d3ae53c99f0028", SYMLINK+="asm-diske", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?1", SUBSYSTEM=="block", PROGRAM=="/usr/lib/udev/scsi_id -g -u -d /dev/$parent", RESULT=="36000c29e29a4bcd75acea14e982ea49d", SYMLINK+="asm-diskf", OWNER="grid", GROUP="asmadmin", MODE="0660"


讓配置生效：
/sbin/udevadm trigger --type=devices --action=change
udevadm control --reload-rules

檢視生效後的裝置名：
[root@db12c_01 ~]# ls -l /dev/as*
lrwxrwxrwx 1 root root 4 Nov 21 00:38 /dev/asm-diskb -> sdb1
lrwxrwxrwx 1 root root 4 Nov 21 00:38 /dev/asm-diskc -> sdc1
lrwxrwxrwx 1 root root 4 Nov 21 00:38 /dev/asm-diskd -> sdd1
lrwxrwxrwx 1 root root 4 Nov 21 00:38 /dev/asm-diske -> sde1
lrwxrwxrwx 1 root root 4 Nov 21 00:38 /dev/asm-diskf -> sdf1

在做配置的時候，發現第二個節點配置時需要讀取一下磁碟的分割槽資訊才能成功繫結

[root@db12c_02 ~]# fdisk /dev/sdf
Welcome to fdisk (util-linux 2.23.2).


Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.




Command (m for help): p


Disk /dev/sdf: 4294 MB, 4294967296 bytes, 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc1b37f09


參考：http://www.xifenfei.com/2016/08/linux-7-udev.html
          http://www.jydba.net/how-to-set-device-name-using-udev-on-oracle-linux-7-1/


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