Channel path report

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The Channel Path Report, like the PCHID Summary Report and CHPID Summary Report, lists the channel paths defined in the IOCDS. The Channel Path Report shows the following information for each channel path defined in the IOCDS:
  • PCHID number, PCHID and PORT numbers, VCHID number, or AID and PORT numbers associated with the channel path. VCHID numbers are indicated by '(V)'. If the MIXTYPE keyword was specified for the PCHID, this is indicated by '(M)'.
  • CHPID number of the channel path
  • Channel path type
  • Switch number associated with the channel path
  • Logical partition (LP) access method for the channel path
  • Physical control unit numbers that attach to the channel path
  • Device numbers that attach to the physical control units that attach to the channel path.
For each physical control unit that attaches to each channel path, the Channel Path Report shows the following:
  • Control unit number and type
  • Control unit logical address (CUADD)
  • Unit address ranges
  • CSS IDs to which the channel path has access
  • Link address.
All the devices defined by the same IODEVICE statement are reported together. For each IODEVICE statement that is assigned to each physical control unit, the Channel Path Report shows the following:
  • Device numbers from the IODEVICE statement assigned to this channel path
  • Subchannel set IDs in which the devices are defined
  • Unit addresses for the devices
  • Device type
  • Model.

See Figure 1 for an example of the Channel Path Report.

If the SWITCH keyword is not allowed for the channel path type, the report column contains N/A. If the SWITCH keyword is allowed but not specified for a channel path, the report column contains NONE.

The LP ACCESS report column shows the logical partition access method for the channel path.
  • DED is reported if the channel path is dedicated to a single logical partition
  • REC is reported if the channel path is defined as reconfigurable
  • SHARED is reported if the channel path is defined as shared
  • SPANNED is reported if the channel path is defined as spanned.

If a channel path is assigned to an I/O cluster (IOCLUSTER keyword), the I/O cluster name is reported in the control unit columns.

For ICP channel paths, a CSS ID associated with the channel path and the CHPID number and CSS ID that are associated with the connected channel path are reported in the control unit columns.

For CIB, CL5, CL6, and CS5 channel paths, a CSS ID associated with the channel path and the CHPID number and CSS ID and CSYSTEM name associated with the connecting channel path are reported in the control unit columns.

If the channel path type (TYPE keyword) does not permit logical addresses (CUADD keyword) to be specified for physical control units, the report column contains N/A. If the channel path type permits logical addresses but you did not specify any, the report column contains NONE.

If the channel path type (TYPE keyword) does not permit link addresses (LINK keyword) to be specified for physical control units, the report column contains N/A. If the channel path type permits link addresses but you did not specify any, the report column contains two asterisks (**).

If a device is in a subchannel set other than 0, (n) is contained in the DEVICE NUMBERS report column for the appropriate CSSs. The n represents the appropriate subchannel set number. For devices in subchannel set 0 for a CSS, no special indication is included.