AIX 5L Problem Determination - IBM Redbooks

For example:
> od vmker 15
000bde48: 00002001 00006003 00000000 00008004
000bde58: 00200000 00000012 0000000d 00000200
000bde68: 00080000 00000017 00078c93 00066320
000bde78: 00000ab2 00020000 00002870
> od 0xbde48 15 a
000bde48: 00002001 00006003 00000000 00008004 |.. ...`.........|
000bde58: 00200000 00000012 0000000d 00000200 |. ..............|
000bde68: 00080000 00000017 00078c93 00066320 |..............c |
000bde78: 00000ab2 00020000 00002870 |..........(p|
The errpt subcommand
To examine the last few error log entries from the dump, use the errpt
subcommand. For example:
> errpt
ERRORS NOT READ BY ERRDEMON (MOST RECENT LAST):
Sun Apr 6 01:01:11 1997 : DSI_PROC data storage interrupt : processor
Resource Name: SYSVMM
42000000 007fffff 80000000 fffffffa
>
The symptom subcommand
The symptom[-e] subcommand displays the symptom string for a dump. It is not
valid on a running system. The -e option will create an error log entry containing
the symptom string and is normally only used by the system and not manually.
The symptom string can be used to identify duplicate problems.
VMM error log
When the Dump Status code indicates a DSI or an ISI, look at the VMM error log.
This is done using the od subcommand and looking at the vmmerrlog structure.
See Table 5-4 for valid offset codes. For example:
> od vmmerrlog 9 a
000c95b0: 9d035e4d 53595356 4d4d2000 00000000 |..^MSYSVMM .....|
000c95c0: 00000000 0a000000 00000000 0000000b |................|
000c95d0: 00000086 |....|
Table 5-4 The vmmerrlog structure
Offset Meaning
0x14 The Data Storage Interrupt Status Register (DSISR)
0x1C Faulting address
0x20 VMM return code
Chapter 5. System dumps 93