Not able to create ASM disks
[root@l01plascposdb01 ~]# /usr/sbin/oracleasm createdisk ORA_DATA01 /dev/ORA_DATA01
Device "/dev/ORA_DATA01" is not a partition
I found there is a bug in EMC power path and asmtool can be used to create disks, but no luck.
[root@l01plascposdb01 ~]# /usr/sbin/asmtool -C -l /dev/oracleasm -n /dev/ORA_OCR_VOTE03 -s /dev/ORA_OCR_VOTE03 -a force=yes
Error opening manager: No such file or directory
[root@l01plascposdb01 ~]#
ASMlib got installed propery and I was able to configure using below command.