VxVM provides a template method to change the tunable parameters. With this method, you export the tunable parameters to a file, modify the file, then import the file. The tunable template must be strictly of the format that export provides. In case of discrepencies observe that particular value will be discarded.
To change the values of the VxVM tunable parameters using templates
# vxtune -o export file=file_name [component]
For example:
# vxtune -o export file=vxvm-tunables
# vxtune -o export file=vvr-tunables vvr
# vxtune -o import file=file_name
For example:
# vxtune -o import file=vxvm-tunables