Example of a rebuild hang

Consider a sysplex with three systems (SYSTEM1, SYSTEM2, SYSTEM3). The SETXCF START,REBUILD command is issued for the XCF structure IXC1, but the rebuild has not completed. The DISPLAY XCF,STRUCTURE,STRNAME=IXC1 command is entered and the response to the command indicates that a connector to IXC1 on SYSTEM2 has not completed the rebuild process.

Figure 1 shows the output to the commands. Information about the connector that has not responded to the rebuild request is indicated by an asterisk next to the connection name (SIGPATH_02000002 in this example). Based on the information, the system programmer is able to collect the appropriate documentation and determine the recovery action.

Figure 1. Message Output from a Rebuild Hang

  ===>     SETXCF START,REBUILD,STRNAME=IXC1

           IXC367I THE SETXCF START REBUILD REQUEST FOR STRUCTURE 924
           IXC1 WAS ACCEPTED.
           IXC467I REBUILDING PATH STRUCTURE IXC1 925
                   RSN: PARTICIPANT
                   DIAG073: 08840001 0000000A 00000000 04000000 00000000

               /
               /
               /
               /
               /

   ===>    D XCF,STR,STRNAME=IXC1

           IXC360I  09.53.28  DISPLAY XCF 942
           STRNAME: IXC1
   ===>     STATUS: REASON SPECIFIED WITH REBUILD START:
                      OPERATOR INITIATED
                    REBUILD PHASE: QUIESCE
             POLICY SIZE    : 10000 K
             POLICY INITSIZE: N/A
             REBUILD PERCENT: N/A
             PREFERENCE LIST: TESTCF
             EXCLUSION LIST IS EMPTY

            ACTIVE STRUCTURE
            ----------------
             ALLOCATION TIME: 08/30/95 09:50:49
             CFNAME         : TESTCF
             CF: CF01...
                                PARTITION: 0   CPCID: 00
             ACTUAL SIZE    : 10240 K
             STORAGE INCREMENT SIZE: 256 K
             VERSION        : AB991335 42205400
             DISPOSITION    : DELETE
             ACCESS TIME    : 0
             MAX CONNECTIONS: 32
             # CONNECTIONS  : 3
             NEXT USYNC EVENT     : 00000001
             NEXT USYNC STATE     : 00000000 00000000 00000000 00000000
                                    00000000 00000000 00000000 00000000

            * ASTERISK DENOTES CONNECTOR WITH OUTSTANDING REBUILD RESPONSE
            CONNECTION NAME  ID VERSION  SYSNAME  JOBNAME  ASID STATE
            ---------------- -- -------- -------- -------- ---- -----------
            SIGPATH_01000001 01 00010001 SYSTEM1  XCFAS    0006 ACTIVE
   ===>    *SIGPATH_02000002 02 00020001 SYSTEM2  XCFAS    0006 ACTIVE
            SIGPATH_03000003 03 00030001 SYSTEM3  XCFAS    0006 ACTIVE