oracleasmlib

This confuses me.

I have oracle 11.1.0.7 rac on linux using asm for both production and testing. In production, i see this

rpm -qa |grep oracleasm
oracleasm-2.6.9-55.0.0.0.2.ELsmp-2.0.5-1.el4
oracleasm-2.6.9-89.0.20.0.1.ELsmp-2.0.5-1.el4
oracleasm-support-2.1.3-1.el4
oracleasm-2.6.9-89.0.19.0.1.ELsmp-2.0.5-1.el4

and in testing

rpm -qa |grep oracleasm
oracleasm-2.6.9-55.0.0.0.2.ELsmp-2.0.5-1.el4
oracleasm-2.6.9-89.0.19.0.1.ELsmp-2.0.5-1.el4
oracleasm-2.6.9-89.0.20.0.1.ELsmp-2.0.5-1.el4
oracleasm-support-2.1.7-1.el4
oracleasmlib-2.0.4-1.el4

production does not have oracleasmlib-2.0.4-1.el4, but both production and testing work fine.

So does that mean oracleasmlib-2.0.4-1.el4 is not needed?

Thanks