Device detail

To view detailed information for a particular device and a list of files allocated on that device, place the cursor on a volser on the DASD Users panel, as shown in the previous figure, and press PF11.

The Examine One Device panel is displayed.

Figure 1. Examining a Specific Device (Accessed by Zoom)

 ________________ ZZDPLT   VTM     CICSSP31 V530./C SP22 11/23/13 15:51:03 
> PF1 Help     PF3 Back     PF4 Main Menu     PF7 Up     PF8 Down     PF11 Zoom

===============================================================================

>                            EXAMINE ONE DEVICE
 DEV 314 Volser=PPSMP5  Online  Alloc
 dplt 2 ________ OMEGAMON Peek at Unit=314 Volser=PPSMP5 ____
+      |DBsy  DDDDDDDDDDDDDDDDDDDDDDDDDSSSSSSSSSSSSSSSSSSSSSSSSS| Samples:   50
+      |IOQ                                                     | Interval:   2
+      |I/O#                           >62                      | I/O’s:      1
+      |CPU                            .........................|
+      |User                                                    |
+      |Cyl                            >0548                    |
+      |Nrdy                                                    |
+      |Resv                                                    |

> To scroll the display, enter number in column 1 of FILE
> For file details, place the cursor on your choice and press PF11.

 FILE   VOL=PPSMP5
+                                   Number of files selected:   4  Skipped:   0
+      DDname   Dataset name                                 VOLSER  Attributes
+      -------- -------------------------------------------- ------  ----------
+      STEPLIB  CICS.V311.LOADLIB                            PPSMP5  Blk=06144
+      STEPLIB  CICS.V311.LOADLIB1                           PPSMP5  Blk=32760
+      DFHRPL   CICS.V311.LOADLIB                            PPSMP5  Blk=06144
+      DFHRPL   CICS.V311.LOADLIB1                           PPSMP5  Blk=32760
===============================================================================

The DEV statement and the statements below it display the following device information:

DEV ccc: Device address.
DBsy: D indicates device busy and S indicates suspended channel program.
IOQ: Depth of I/O queue, where a plus sign (+) indicates more than 9.
IO#: I/O number, where a greater than sign (>) indicates the start of I/O.
CPU: Vertical bar (|) indicates dispatchable tasks and period (.) indicates non dispatchable tasks (no ready TCBs).
User: User of the device.
Cyl: Cylinder being accessed.
Nrdy: N indicates that the device is not ready.
Resv: R indicates that the device is reserved.

You can also obtain detailed information on a specific device by entering the DASD Detail option (D) on the I/O path or fast path I.D from any panel. The DASD Detail panel is displayed in the following figure; you can then enter the device address.

Figure 2. DASD Detail Panel (I.D)

 ________________ ZDASV    VTM     CICSSP31 V530./C SP22 11/23/13 15:51:03 
> PF1 Help     PF3 Back     PF4 Main Menu     PF7 Up    PF8 Down

> A-DASD    B-DASD Degradation    C-DASD Users    D-DASD Detail    E-DASD Plot
===============================================================================

>                                DASD DETAIL
> Replace the address following DEV with the unit address you want.

 DEV 141 Volser=SYSG21  Online  Alloc
 dio .R .......
 dioq
 dopn
 dusr
 dres
 dsta   Private
 dtyp      3380
 dvmp  Mount Status:Perm Res Private Shared
+      Status:
+      User: *MAIN*            Waiting I/O’s:
+      Status: - Suspended Channel Program <Paging Device>
+
+       UCB Prefix: F32790
+      00040140 00FC5900 00FC5900 0001002E 189C0002 F00020F0 3C3D7C7D 00000000
+      01080000 00000001 00000000 00FC5900 
+
+       UCB Common + DASD Device Dependent Segment: F327C0
+      008AFF8C 01410800 00F32860 00F1F4F1 3030200E 00F32770 000F0100 E2E8E2C7
+      F2F15000 00000003
+
+       Common Extension: F32770
+      00000940 20220040 01BC6F10 00000000 00000000 00FD0188 00F327E8 00000000
===============================================================================

To select another device, replace the address after DEV with the unit address you want.

The DEV statement and the statements below it display the following device detail:

DEV: Unit information.
DIO: Device I/O count from RMF.
DIO.R: Device I/O rate per second from RMF.
DIOQ: Depth of I/O queue.
DOPN: Number of open DCBs.
DUSR: Current user of this device.
DRES: Device reserve count.
DSTA: Mount status of this volume (Private, Public or Storage).
DTYP: Device type.
DVMP: Hex dump of UCB for this device.