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