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 the following:

• An occupant, which represents a hardware component that can be configured into the system

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

Attachment points are represented by logical and physical attachment point IDs (Ap_Ids). The physical Ap_Id is the physical pathname of the attachment point. The logical Ap_Id is a user-friendly alternative for the physical Ap_Id. For more information on Ap_Ids, refer to cfgadm(1M).

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 the following:

fas1:scsi

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

HBA-logical-apid::device-identifier

In the following example, 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 /dev/rmt/1 tape device is the following:

c0::st4

For more information on SCSI Ap_Ids, refer to cfgadm_scsi(1M).

The cfgadm command represents all resources and dynamic reconfiguration operations in terms of a common set of states (such as configured, unconfigured) and operations (connect, configure, unconfigure, and so on). For more information on these common states and operations, see cfgadm(1M).

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

Receptacle and occupant states for SCSI device attachment points are as follows:

The state of SCSI attachment points is unknown unless there is special hardware to indicate otherwise. For instructions on displaying SCSI component information, see How to Display Information About SCSI Devices.