Undocumented AIX command lquerypv

lquerypv can read the PVID directly from the disk:

# lquerypv -h /dev/hdisk0 80 10
00000080   00C4489D 5E6002A5 00000000 00000000  |..H.^`..........|

# lspv
hdisk0          00c4489d5e6002a5                    rootvg          active    

And also the VGDA:

 lqueryvg -Atvp hdisk0 
Max LVs:        256
PP Size:        27
Free PPs:       766
LV count:       12
PV count:       2
Total VGDAs:    3
Conc Allowed:   0
MAX PPs per PV: 1016
MAX PVs:        32
Quorum (disk):  0
Quorum (dd):    0
Auto Varyon ?:  1
Conc Autovaryon 0
Varied on Conc: 0
Logical:        00c4489d00004c00000001354404cb5c.2   hd6 1  
                00c4489d00004c00000001354404cb5c.3   hd5 1  
                00c4489d00004c00000001354404cb5c.4   hd8 1  
                00c4489d00004c00000001354404cb5c.5   hd3 1  
                00c4489d00004c00000001354404cb5c.6   hd1 1  
                00c4489d00004c00000001354404cb5c.7   hd11admin 1  
                00c4489d00004c00000001354404cb5c.8   livedump 1  
                00c4489d00004c00000001354404cb5c.13  fslv00 1  
                00c4489d00004c00000001354404cb5c.14  hd4 1  
                00c4489d00004c00000001354404cb5c.15  hd2 1  
                00c4489d00004c00000001354404cb5c.16  hd9var 1  
                00c4489d00004c00000001354404cb5c.17  hd10opt 1  
Physical:       00c4489d5e6002a5                1   0  
                00cf405e3e792147                2   0  
VGid:           00c4489d00004c00000001354404cb5c
Total PPs:      1092
LTG size:       128
HOT SPARE:      0
AUTO SYNC:      0
VG PERMISSION:  0
SNAPSHOT VG:    0
IS_PRIMARY VG:  0
PSNFSTPP:       4352
VARYON MODE:    0
VG Type:        0
Max PPs:        32512
Mirror Pool Str n
Sys Mgt Mode:   0
VG Reserved:    1
PV RESTRICTION: 0
Infinite Retry: 2

To find out which application crashed the OS use:

# /usr/sbin/lquerypv -h /path/to/core 6b0 64

# lquerypv -h /dev/hdiskpower22

hdiskpower22
00000000   00820101 00000000 80000003 5EDF6D84  |............^.m.|
00000010   0001EFD7 00000000 00000000 00000000  |................|
00000020   4F52434C 4449534B 00000000 00000000  |ORCLDISK........|
00000030   00000000 00000000 00000000 00000000  |................|
00000040   0A100000 00030104 41534D5F 50524F47  |........ASM_PROG|
00000050   5F47524F 55505F30 30303300 00000000  |_GROUP_0003.....|
00000060   00000000 00000000 41534D5F 50524F47  |........ASM_PROG|
00000070   5F47524F 55500000 00000000 00000000  |_GROUP..........|
00000080   00000000 00000000 41534D5F 50524F47  |........ASM_PROG|
00000090   5F47524F 55505F30 30303300 00000000  |_GROUP_0003.....|
000000A0   00000000 00000000 00000000 00000000  |................|
000000B0   00000000 00000000 00000000 00000000  |................|
000000C0   00000000 00000000 01F61B0C DB9AFC00  |................|
000000D0   01F61B0C DB9B0800 02001000 00100000  |................|
000000E0   0001BC80 00002800 00000002 00000001  |......(.........|
000000F0   00000002 00000000 0003FFFF FFFFFFFF  |................|

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