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Prolog 
Control Block Contents 
   FCABK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  FCABK Prolog Top of page
  
 NAME       : HCPFCABK
 DESCRIPTION: FCP device activity block
 DSECT      : FCABK
 FUNCTION   : Contains FCP dvice activity to be used by Monitor
 LOCATED BY : RDEVFCAB
 CREATED BY : VARY ON of an EDEVICE or SET EDEVICE ADD PATH
              the first time an FCP device is used for an
              online EDEVICE path
 DELETED BY : The FCABK is never deleted once it is created.
              The actvity information is cleared when the
              FCP device is no longer in used by an online
              EDEVICE path.
 SERIALIZED : The FCASLOCK should be held exclusive when updating the
              FCABK and held shared when obtaining data from the FCABK.
 RELOCATION CONSIDERATIONS : None
 
 
  FCABK Control Block Content Top of page
  




 FCABK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      FCABK          FCP device activity block
0000    0 Dbl-Word     8 FCASLOCK (3)   LKWRD for FCABK
0018   24 Dbl-Word     8 FCAUTIME       Timestamp of the most recent
                                        FCABK update
0020   32 Signed       4 FCANMPTH       Number of paths using this FCP
                                        device
0024   36 Signed       4 *              Reserved for IBM use
0028   40 Address      4 FCACHABK       Pointer to CHABK
002C   44 Signed       2 FCARDEV        FCP device number
002E   46 Bitstring    2 *              Rserved for future IBM use
0030   48 Character    4 FCAPRTYP       Port type
0034   52 Signed       4 *              Reserved for future IBM use
0038   56 Dbl-Word     8 FCAINPRQ       Cumulative number of read
                                        requests since chpid activitaion
0040   64 Dbl-Word     8 FCAOUTRQ       Cumulative number of write
                                        requests since chpid activitaion
0048   72 Dbl-Word     8 FCAINPMB       Cumulative number of megabytes
                                        read since chpid activation
0050   80 Dbl-Word     8 FCAOUTMB       Cumulative number of megabytes
                                        written since chpid activation
0058   88 Dbl-Word     8 FCARESET       Seconds since FCP device
                                        activation
0060   96 Dbl-Word     8 FCALATEN       Aggregate channel/fabric latency
0068  104 Dbl-Word     8 FCABUFOF       Number of buffer overflow
                                        conditions
0070  112 Dbl-Word     8 FCASTIME       Time to gather data across SIC
                                        calls
0078  120 Signed       4 FCASCALL       Number of calls to gather data
007C  124 Signed       4 FCASERRS       Number of data calls that failed
0080  128 Signed       4 *              Reserved for future use
0084  132 Signed       4 FCASMPLS       Cumulative count of samples
0088  136 Signed       2 FCAQDPTH       Number of buffers in use
008A  138 Bitstring    2 *              Reserved for IBM use
008C  140 Signed       4 FCAQDSUM       Cumulative buffers in use
0090  144 Dbl-Word     8 FCAQDSQR       Sum of squares buffers in use
0098  152 Dbl-Word     8 FCAQSECS       Total time in microseconds
                                        requests queued in container
00A0  160 Bitstring   64 *              Reserved for IBM use
          000000E0       FCABKBSZ       (*-FCABK) Length of FCABK in
                                        bytes
          0000001C       FCABKDSZ       (*-FCABK+7)/8 Length in
                                        doublewords
 
 
  FCABK Storage Layout Top of page
  
          
*** FCABK - FCP device activity block
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       FCASLOCK                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  18 |                       FCAUTIME                        |
*     +---------------------------+---------------------------+
*  20 |         FCANMPTH          |///////////////////////////|
*     +---------------------------+-------------+-------------+
*  28 |         FCACHABK          |  FCARDEV    |/////////////|
*     +---------------------------+-------------+-------------+
*  30 |         FCAPRTYP          |///////////////////////////|
*     +---------------------------+---------------------------+
*  38 |                       FCAINPRQ                        |
*     +-------------------------------------------------------+
*  40 |                       FCAOUTRQ                        |
*     +-------------------------------------------------------+
*  48 |                       FCAINPMB                        |
*     +-------------------------------------------------------+
*  50 |                       FCAOUTMB                        |
*     +-------------------------------------------------------+
*  58 |                       FCARESET                        |
*     +-------------------------------------------------------+
*  60 |                       FCALATEN                        |
*     +-------------------------------------------------------+
*  68 |                       FCABUFOF                        |
*     +-------------------------------------------------------+
*  70 |                       FCASTIME                        |
*     +---------------------------+---------------------------+
*  78 |         FCASCALL          |         FCASERRS          |
*     +---------------------------+---------------------------+
*  80 |///////////////////////////|         FCASMPLS          |
*     +-------------+-------------+---------------------------+
*  88 |  FCAQDPTH   |/////////////|         FCAQDSUM          |
*     +-------------+-------------+---------------------------+
*  90 |                       FCAQDSQR                        |
*     +-------------------------------------------------------+
*  98 |                       FCAQSECS                        |
*     +-------------------------------------------------------+
*  A0 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  E0
*
*** FCABK - FCP device activity block
 
 
  FCABK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
FCABKBSZ       00A0 000000E0
FCABKDSZ       00A0 0000001C
FCABUFOF       0068
FCACHABK       0028
FCAINPMB       0048
FCAINPRQ       0038
FCALATEN       0060
FCANMPTH       0020
FCAOUTMB       0050
FCAOUTRQ       0040
FCAPRTYP       0030
FCAQDPTH       0088
FCAQDSQR       0090
FCAQDSUM       008C
FCAQSECS       0098
FCARDEV        002C
FCARESET       0058
FCASCALL       0078
FCASERRS       007C
FCASLOCK       0000
FCASMPLS       0084
FCASTIME       0070
FCAUTIME       0018
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:50:26 EDT.
Copyright IBM Corporation, 1990, 2022