HP StorageWorks Secure Path V3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide (AA-RU7VD-TE, February 2004)

Managing Secure Path
82 Secure Path v3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide
Path management
Secure Path v3.0C supports up to 32 paths to a unit on a storage system. The
spmgr utility lets you monitor and manage these paths.
The path management tasks include:
■ Selecting paths
■ Setting preferred and unpreferred paths
■ Restoring preferred paths
■ Quiescing and restarting objects and paths
The select command
A path is a combination of all the components from server to the unit on the
storage system. When you describe the entire path you must identify the HBA and
the controller port.
Selecting paths means to identify a path to be used for I/O. Path information,
including selected paths, can be viewed with one or more options of the
spmgr display command.
■ When paths are selected for I/O and are intended to remain selected during a
server reboot or power cycle, they are referred to as preferred paths.
■ If paths are selected for the duration of the server’s current processing time,
they are referred to as selected paths and are not preserved during a reboot or
power cycle of the server.
Syntax:
spmgr select -a HBA [-d device]
-c controller_ser_num [-d device]
-p path_instance
# spmgr select -a HBA
This command selects the path with the indicated HBA conditions and makes that
path Active.
Example:
# spmgr select –a 2300-1
Result: The Secure Path driver selects all paths from 2300-1 to all units on all
storage systems and marks them selected.