Asher/ 一月 6, 2014/ ASM, Oracle/ 0 comments

简单记录一则在Linux平台上创建ASM磁盘时遭遇:

Device “/dev/sdf1” is already labeled for ASM disk “”

的错误!

1 故障现象:

[root@node1 ~]# /usr/sbin/oracleasm listdisks 
ASMDISK1
ASMDISK2
[root@node1 ~]# /usr/sbin/oracleasm createdisk asmdisk3 /dev/sdf1
Device "/dev/sdf1" is already labeled for ASM disk ""
[root@node1 ~]# ll /dev/oracleasm/disks/
total 0
brw-rw---- 1 oracle oinstall 8, 49 Dec 25 16:53 ASMDISK1
brw-rw---- 1 oracle oinstall 8, 65 Dec 25 16:53 ASMDISK2
[root@node1 ~]#

2 故障处理:

通过查看/etc/blkid/blkid.tab文件,确实看到设备/dev/sdf1已经是一块ASM磁盘,只是ASM卷标为空。

[root@node1 ~]# cat /etc/blkid/blkid.tab
/dev/sda2
/dev/sda1
/dev/cdrom
/dev/hdc
/dev/sde1
/dev/sdd1
/dev/sdf1
[root@node1 ~]# 

通过/usr/sbin/oracleasm renamedisk命令来重命名磁盘:

[root@node1 ~]# /usr/sbin/oracleasm renamedisk -f /dev/sdf1 asmdisk3
Writing disk header: done
Instantiating disk "ASMDISK3": done
[root@node1 ~]# /usr/sbin/oracleasm listdisks 
ASMDISK1
ASMDISK2
ASMDISK3
[root@node1 ~]# ll /dev/oracleasm/disks/
total 0
brw-rw---- 1 oracle oinstall 8, 49 Dec 25 16:53 ASMDISK1
brw-rw---- 1 oracle oinstall 8, 65 Dec 25 16:53 ASMDISK2
brw-rw---- 1 oracle oinstall 8, 81 Dec 25 17:16 ASMDISK3
[root@node1 ~]#

且,重启操作系统之后:

[root@node1 ~]# cat /etc/blkid/blkid.tab
/dev/sda2
/dev/sda1
/dev/cdrom
/dev/hdc
/dev/sdf1
/dev/sde1
/dev/sdd1
[root@node1 ~]# 

3 故障原因:

之前,的确已经将设备/dev/sdf1创建成了ASM磁盘,然后,在操作系统级别将/dev/sdf硬盘的第1个分区sdf1直接删除后,重新创建了分区sdf1之后,再想将/dev/sdf1创建为ASM磁盘时,就遭遇到上述的错误信息!

4 如何避免:

正确的步骤,先通过/usr/sbin/oracleasm deletedisk命令来删除对应的ASM磁盘,然后在操作系统级别删除对应的硬盘分区,重新创建新分区之后,再在该硬盘分区上通过/usr/sbin/oracleasm createdisk命令创建ASM磁盘时,就不会出现上述错误了!

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