HP UX Encrypted Volume and Filesystem (EVFS) manual Starting the Evfs Subsystem, Example

Step 4: Starting the EVFS Subsystem

You must start the EVFS subsystem to create EVFS keys and volumes. Starting the EVFS subsystem does not enable encryption of the EVFS volume. You must still create the EVFS volumes and enable EVFS for each volume.

To start the EVFS subsystem, enter the following command:

evfsadm start [-n number_threads]

where:

-nnumber_threads Specifies the number of threads to create for EVFS encryption and decryption processing.

Range: On single-processor systems, 1 is the only valid value.

On multiprocessor systems, the maximum number of threads is the number of processors in the system.

Default: On single-processor systems, the default is 1.

On multiprocessor systems, the default is the number of processors in the system minus 1. Setting the number of threads to a lower value can decrease EVFS throughput.

The evfsadm start command starts the EVFS subsystem by initializing the EVFS pseudo-driver and starting the evfsevold process. The evfsevold process starts kernel threads for data encryption and decryption. You must start the EVFS subsystem to generate EVFS user keys and enable EVFS volumes. This command is automatically executed at system startup if EVFS is enabled in the /etc/rc.config.d/evfs file. See “Step 5: (Optional) Configuring the Autostart Feature” (page 62) for more information about enabling EVFS to automatically start at system startup.

Example

#evfsadm start

EVFS subsystem started.

Step 4: Starting the EVFS Subsystem 43