Owner's Manual

Troubleshooting 11
Automatic Storage Management (ASM)
ASM Disk Creation Issue With EMC
®
PowerPath
®
The issue occurs when PowerPath version 5.0.1-5.3 does not support the
input/output calls made by oracleasm. The oracleasm createdisk
command fails and displays the following error message:
marking disk "/dev/emcpowera11" as an ASM disk:
asmtool: Device "/dev/emcpowera11" is not a partition
[FAILED].
To resolve the issue, perform the following steps:
1
Perform the /etc/init.d/oracleasm createdisk operation using
the following command:
/usr/sbin/asmtool -C -l /dev/oracleasm -n <volume name> -s /dev/<emc
device> -a force=yes
The following message is displayed:
asmtool: Device "/dev/<emc device>" is not a
partitionasmtool: Continue anyway.
2
The permissions of the volume under /dev/oracleasm/disks/ will be
root: root . Reboot the system to correct it.
3 You can now use the device using the PowerPath device name.
For detailed instructions, see the Oracle Metalink Note # 469163.1 on
support.oracle.com.