How to load oracleasm module

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oracleasm module not loaded or /dev/oracleasm not mounted

# oracleasm createdisk  DATA1 /dev/xvdc11
oracleasm module not loaded or /dev/oracleasm not mounted.
# oracleasm status
Checking if ASM is loaded: no
Checking if /dev/oracleasm is mounted: no

Load the oracleasm module
# oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Configuring "oracleasm" to use device physical block size
Mounting ASMlib driver filesystem: /dev/oracleasm

Verify the oracleasm configuration
# df -ha |grep -i oracleasm
oracleasmfs                     0     0     0    - /dev/oracleasm
# lsmod | grep oracleasm
oracleasm              61440  1

Initialize the disks using oracleasm 
# oracleasm createdisk DATA1 /dev/xvdc11
Writing disk header: done