The I/O path list

The I/O Path List is the output of the verify function available on the Active Sysplex Member List and the Activate or Verify Configuration Dynamically panel (see Verifying a configuration against the local system and Verifying a configuration against a system in the sysplex). The list compares the configuration in the accessed or the active IODF with the actual configuration as sensed from the system.

The report extends over two pages and can be scrolled horizontally.

  Goto  Filter  Backup  Query  Help
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                              I/O Path List         Row 1 of 473 More: >
Command ===> ___________________________________________ Scroll ===> PAGE

Accessed IODF: IODFST.IODF11
Active IODF  : IODFST.IODF11                           System . : CB88
Processor  . : CB88       Partition :                  OS config: B710

----I/O Path----- ----------Sensed Data--------- ----IODF Data---------- D
CHP CU   DEV      STAT CHT   CUTYPE   DEVTYPE  O CHT CUTYPE   DEVTYPE    S
10  FFFE FFFE,2        CFS   9674-C04 CFS        CFS CFS      CFS        C
11  FFFD FFFC,2        CFS   9674-C04 CFS        CFS CFS      CFS        C
20  0040 0040,32       CVC_P ****     ****                               *
21  EFD2 EFD2,4        CNC_S 9672-E02 9672-CTC   CNC SCTC     SCTC
21  EFD2 EFD6          CNC_S 9672-E02 9672-CTB   CNC SCTC     BCTC
21  EFE2 EFE2,4        CNC_S 9672-E02 9672-CTC   CNC SCTC     SCTC
22  0A00 0A00,64       CNC_S ****     ****     Y CNC 3990     3380       *
22  0A80 0A80,2        CNC_S 3990-6   3390-A38 Y CNC 3990     3390
22  0A80 0A82          CNC_S 3990-6   3390-A38   CNC 3990     3390
22  0A80 0A83          CNC_S 3990-6   3390-A38 Y CNC 3990     3390
22  0A80 0A84          CNC_S 3990-6   3390-A38   CNC 3990     3390
30  2000 202F     6  S FC_S  2107-9A2 2107-900 _ FC  2107     3390B      *
30  2000 2030,32       FC_S  2107-9A2 2107-900 Y FC  2107     3390B      *
B5                OFFL OSM                                               *
FC                OFFL IQD                                               *
 F1=Help      F2=Split     F3=Exit      F7=Backward  F8=Forward   F9=Swap
F10=Actions  F12=Cancel   F20=Right    F22=Command

For each channel path sensed and/or defined in the accessed IODF, the list contains a row showing the I/O path and the sensed and defined channel path, control unit, and device information. If a switch is included in the path, the right page shows the corresponding switch information.

Any discrepancies between the defined and the sensed data are indicated in column D on the right. For channel paths for which column D is blank, the defined and sensed data are consistent. The following values may appear:

Symbol

Meaning

*

Defined and sensed I/O paths differ

C

Defined only to processor but not to OS

O

Defined only to OS but without a path to the processor

@

A combination of * and C

On the display column D is highlighted.

Columns STAT and O indicate the status of the I/O path and the connected device, respectively. An empty field means that the corresponding I/O path or device is online. Offline I/O paths are marked with OFFL and offline devices with Y. If the system is unable to sense the status of an I/O path, it is marked UNKN. If a path is online, HCD checks, whether a single point of failure (SPOF)can be found for this path. If yes, this single point of failure is mapped to the following

• BLANK: Sensed I/O Path is online and no SPOF exists

  If the sensed I/O path is online and a SPOF exists, an up to four digit number is shown with a SPOF indication as follows:

• Position 1 contains blank or SPOF indication 3 (book), 4 (cage), 5 (fail-over domain), 6 (fan-out), 7 (domain), 8 (secondary STI/STI).
• Position 2 contains C if the controller interface shares a SPOF.
• Position 3 contains P if the device has only one path online.
• Position 4 contains S if all paths go through the same switch.

Asterisks (*) in the CHT (channel type), CUTYPE (control unit type), or DEVTYPE (device type) columns indicate that I/O paths are returned but the values for the corresponding types are blank or invalid.

For certain configurations the I/O path list, although restricted to one processor or partition, can be extensive. Using the Filter action you can reduce the list to the entries of interest.

You can save the displayed list by entering SAVE in the command line on the I/O Path List.