Installation and Reference Guide HP StorageWorks Secure Path 3.0F Service Pack 4 for HP-UX 11i v1.0 and 11i v2.0 (5697-8001, March 2009)

NOTE:
On a server reboot, it does not matter if auto-restore is on or off, or if paths have been preferred or
not. The active path comes up on the last path probed and not necessarily on the preferred path . You
must run the spmgr restore all command to restore all active paths to their preferred paths.
# spmgr set -b on | off | rr | lb | li | ls WWNN
This command enables or disables the load balancing option of the driver. This command also allows
you to set the type of load balancing algorithm to be used for path selection. The default load balancing
algorithm is round robin. When load balancing is enabled, it allows I/O to be sent to the unit
along all available paths per the selected algorithm. When load balancing is disabled, the I/O is
sent along the preferred path (if one is selected) or the I/O will use the first available path. By default,
the setting is disabled (off).
# spmgr set -p on | off WWNN
This command enables or disables the path verification of the driver. When enabled, this command
verifies the state of all possible paths to all units. On large configurations with active I/O to many
units, this command may reduce performance. By default the setting is enabled (on).
# spmgr set -f (1…65535 seconds)
This command sets the path verification interval. You can set the interval between 1 to 65535 seconds.
The use of the -f switch does not change the current state of the path verification. It only changes
the value for the interval. Therefore, if path verification is disabled, it remains disabled with the new
interval. By default, the setting is set to 30 seconds.
The path verification interval is the same for all LUNs. The setting is retained even if all LUNs are
deleted. Any new LUN added to the Secure Path configuration assumes the path verification interval
that is currently set.
log command
The spmgr log command lets you enable logging from the Secure Path for Active-Passive device to
the syslog, console, and e-mail notification.
Syntax:
# spmgr log -l (level 0, 1..3)
-c (level 0, 1..3)
-n (level 0, 3 )
The numerical level indicates the message severity. The levels of severity are:
1. Critical
2. Warning
3. Informational
When you select a numerical level, messages of that severity and higher are delivered to the
appropriate output. For example:
• If 3 is selected, then 3, 2, and 1 are logged.
• If 2 is selected, then 2 and 1 are logged.
Secure Path for Active-Passive disk arrays52