Attachment Points

The cfgadm command displays information about attachment points, which are locations in the system where dynamic reconfiguration operations can occur.

An attachment point consists of:

• An occupant, which represents a hardware resource that may be configured into the system, and

• A receptacle, which is the location that accepts the occupant resource

Attachment points are named by logical and physical attachment point IDs (ap_id). The physical ap_id is the physical pathname of the attachment point. The logical ap_id is a user-friendly name that represents the physical attachment point pathname. Refer to cfgadm(1M) for more information on ap_id.

The logical ap_id for a SCSI host bus adapter (HBA), or SCSI controller, is usually represented by the controller number, such as c0.

In cases where no controller number has been assigned to a SCSI HBA, then an internally-generated unique identifier is provided. An example of a unique identifier for a SCSI controller is:

fas1:scsi

The logical ap_id for a SCSI device usually looks like this:

HBA-logical-apid::device-identifier

In the example below, c0 is the logical ap_id for the SCSI HBA:

c0::dsk/c0t3d0

The device identifier is typically derived from the logical device name for the device in the /dev directory. For example, a tape device with logical device name, /dev/rmt/1, has the following logical ap_id:

c0::rmt/1

If a logical ap_id of a SCSI device cannot be derived from the logical name in the /dev directory, then an internally-generated unique identifier is provided. An example of an identifier for the tape device /dev/rmt/1 is:

c0::st4

Refer to the man page cfgadm_scsi(1M) for more information on SCSI ap_ids.

The cfgadm command represents all resources and dynamic reconfiguration operations in terms of a common set of states (such as configured, unconfigured) and set of operations (connect, configure, unconfigure). Refer to the man page cfgadm(1M) for more information on these generic states and operations.

The receptacle and occupant states for the SCSI HBA attachment points are:

Receptacle and occupant state mappings for SCSI devices are:

The condition of SCSI attachment points is "unknown" unless there is special hardware to indicate otherwise. See "How to Display Configuration Information for All Devices" for instructions on displaying SCSI component configuration information.