CRW records are recorded on the logrec data set for all software- and hardware-generated channel report words. Software-generated CRWs are created by IOS modules to invoke channel path recovery. Hardware-generated CRWs are created by the channel to provide information describing a machine malfunction affecting a specific, or a collection of, channel subsystem facilities.
| Offset | Size (bytes) alignment (bits) | Field name | Description | |
|---|---|---|---|---|
| Dec | Hex | |||
| 0 | (0) | 1 | CRWKEY1 | Class/Source: |
| ..1. .1.1 | CRW record; type=X'25'. | |||
| 1 | (1) | 1 | CRWKEY2 | System/Release level: |
| 100. .... | OS/VS2. | |||
| ...x xxxx | Release level 0-31. | |||
| 2 | (2) | 1 | CRWSMS | Record-independent switches: |
| 1... ... | More records follow. | |||
| 0... .... | Last record. | |||
| .1.. .... | Time-of-day (TOD) clock instruction issued. | |||
| ..1. .... | Record truncated. | |||
| ...1 .... | Record created by MVS/SP Version 2, 3, or 4. | |||
| .... 1... | TIME macro issued. | |||
| .... .xxx | Reserved. | |||
| 3 | (3) | 3 | Record-dependent switches: | |
| Byte 0 | CRWBYTE1 | Reserved. | ||
| Byte 1 | CRWBYTE2 | Reserved. | ||
| Byte 2 | CRWBYTE3 | Reserved. | ||
| 6 | (6) | 1 | CRWRCDCT | Record count: |
| xxxx .... | CRWRCSEQ | Record sequence number. | ||
| .... xxxx | CRWFZREC | Total number of physical records in this logical record. | ||
| 7 | (7) | 1 | Reserved. | |
| 8 | (8) | 4 | CRWDATE | System date of incident. |
| 12 | (C) | 4 | CRWTIME | System time of incident. |
| 16 | (10) | 1 | CRWVER | Machine version code. |
| 17 | (11) | 3 | CRWSER | Central processor serial number. |
| 20 | (14) | 2 | CRWMOD | Central processor machine model number. |
| 22 | (16) | 2 | CRWCEL | Reserved. |
| END OF STANDARD HEADER | ||||
| 24 | (18) | 8 | CRWMODUL | CSECT name of module doing recording. |
| 32 | (20) | 1 | CRWRECCD | CRW recording code: Identifies the format of the variable portion of the record. |
| 33 | (21) | 1 | CRWFLAG1 | Flag byte 1. |
| 1... .... | CRWHARD | Hardware-stored CRW. | ||
| .1.. .... | CRWSOFT | Software-created CRW. | ||
| ..xx xxx. | Reserved. | |||
| .... ...1 | CRWINVAL | Incorrect CRW recording. | ||
| 34 | (22) | 1 | CRWFLAG2 | Flag byte 2. |
| 35 | (23) | 1 | CRWCODE | CRW origin code. |
| 0000 0000 | CRW origin unknown. | |||
| 0000 0001 | CRW pending machine check. | |||
| 0000 0010 | System damage machine check. | |||
| 0000 0011 | Alternate central processor recovery (ACR). | |||
| 0000 0100 | Reserved. | |||
| 0000 0101 | Reserved. | |||
| 0000 0110 | Hot I/O recover channel path. | |||
| 0000 0111 | Hot I/O remove channel path. | |||
| 0000 1000 | Vary channel path - forced. | |||
| 0000 1001 | Reset Event Occurred - recover channel path | |||
| 0000 1010 | Link Level Error Occurred | |||
| X‘0B’-X‘FF’ | Reserved. | |||
| 36 | (24) | 2 | CRWCP | Processor address CRW retrieved on. |
| 38 | (26) | 2 | Reserved. | |
| 40 | (28) | 4 | CRWCRW | Channel report word (CRW). |
| 44 | (2C) | 2 | CRWDEV | Binary device number. |
| 46 | (2E) | 2 | Reserved. | |
| 48 | (30) | 4 | CRWSEQNO | CRW sequence number. |
| 52 | (34) | 4 | CRWASEQN | Associated CRW sequence number. |
| 56 | (38) | 2 | CRWDEVST | UCB device status flags, or zero if UCB not available. |
| 58 | (3A) | 2 | CRWPMCW | Path management control word, or zero if UCB not available. |
| 60 | (3C) | 1 | CRWCHPCT | Channel path recovery count, or zero if UCB not available. |
| 61 | (3D) | 2 | Reserved. | |
| 63 | (3F) | 1 | CRWLEVEL | UCB level value, or zero if UCB not available. |
| 64 | (40) | 4 | CRWLVMSK | UCB level bit mask, or zero if UCB not available. |
| 68 | (44) | 4 | CRWSCHRC | UCB subchannel recovery anchor, or zero if UCB not available. |
| 72 | (48) | 1 | Reserved. | |
| 73 | (49) | 1 | CRWICHPT | ICHPT flags associated with the CRW channel path ID. |
| 74 | (4A) | 8 | CRWISDT | Copy of the IOS interrupt subclass definition table. |