asm磁盘创建提示“Marking disk "VOL1" as an ASM disk: [FAILED]”

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今天是2013-11-29，今天安装了一下asm，在创建磁盘的时候出现一个问题如下：

Marking disk "VOL1" as an ASM disk: [FAILED]

产生该问题原因在此总结如下：

1）ASM driver is disable

2）Device "/dev/xxx" is not a partition

3）SELINUX=enforcing

对于第一种情况，我们可以使用/etc/init.d/oracleasm status 查看状态，如果没有启动则采用/etc/init.d/oracleasm start 进行启动asm 驱动

2）对于该问题，需要首先划分分区，因为在官网提出只有如下asm才可支持：

Oracle ASM disks are the storage devices that are provisioned to Oracle ASM disk groups. Examples of Oracle ASM disks include:

A disk or partition from a storage array
An entire disk or the partitions of a disk
Logical volumes
Network-attached files (NFS)

3）对于第三中问题可以采用如下解决方法：

[root@oracle-one ~]# cat /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

[root@oracle-one ~]#
[root@oracle-one ~]# cat /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=permissive
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

selinux代表安全增强linux，有三个值enforcing记录日志且阻止程序运行，permissive记录警告日志允许程序运行，disable关闭 selinux策略。建议设置permisssive。
[root@oracle-one ~]#
[root@oracle-one ~]# setenforce 0
[root@oracle-one ~]# getenforce
Permissive
[root@oracle-one ~]#
[root@oracle-one ~]# /etc/init.d/oracleasm createdisk VOL1 /dev/sdb1
Marking disk "VOL1" as an ASM disk: [ OK ]
[root@oracle-one ~]#

另外非常重要的一点就是，我们可以通过查看/var/log/oracleasm日志信息进行快速问题定位。

That‘s all！