EMC 300-000-978 REV A03 manual Powercf Configuration Utility

PowerPath Administration on Solaris

powercf Configuration Utility

5

File Location

Executing powercf

emcp.conf File

During system boot on Solaris hosts, the powercf utility configures PowerPath devices by scanning HBAs for both single-ported and multiported storage system logical devices. (A multiported logical device shows up on two or more HBAs with the same storage system subsystem/device identity. The identity comes from the serial number for the logical device.) For each storage system logical device found in the scan of the HBAs, powercf creates a corresponding emcpower device entry in the emcp.conf file, and it saves a primary path and an alternate primary path to that device.

After PowerPath is installed, you need to run powercf only when the physical configuration of the storage system or the host changes. Configuration changes that require you to reconfigure PowerPath devices include the following:

◆Adding or removing HBAs

◆Adding, removing, or changing storage system logical devices

◆Changing the cabling routes between HBAs and storage system ports

◆Adding or removing storage system interfaces

Refer to Reconfiguring PowerPath Devices Online on page 5-10 for instructions on reconfiguring PowerPath devices on Solaris.

The powercf utility resides in the /etc directory.

You must have superuser privileges to use powercf.

To run powercf on a Solaris host, type the command, plus any options, at the shell prompt.

The /kernel/drv/emcp.conf file lists the primary and alternate path to each storage system logical device and the storage system device serial number for that logical device. The powercf -qcommand updates the existing emcp.conf file or creates a new one if it does not already exist.

Syntaxpowercf -q-Z

powercf Configuration Utility 5-17