How to add a Volume Manager volume to crashconf on HP-UX using the crashconf -a command

Description

Resolution

The steps needed to add a Volume Manager volume to crashconf on HP-UX using the crashconf are

1. Initialize disks with format "hpdisk"
2. Create a diskgroup with the CDS format turned off
3. Create a contiguous volume of type "swap". Please note that if volume is not contiguous, crashconf will complain about it saying "unsupported disklayout"
4. Add it to crashconf using crashconf -a

Below is an example of the steps to explain the steps in details

# vxdisklist
DEVICE TYPE DISK GROUP STATUS
c2t0d0s2 auto:none - - onlineinvalid
c2t1d0s2 auto:hpdisk rootdisk01 rootdg online

#### Initialize disk with format"hpdisk"
# vxdisk -f init c2t0d0s2 format=hpdisk

# vxdisklist
DEVICE TYPE DISK GROUP STATUS
c2t0d0s2 auto:hpdisk - - online
c2t1d0s2 auto:hpdisk rootdisk01 rootdg online

#### Create a diskgroup with the CDS format turned off
# vxdginit dumpdg c2t0d0s2 cds=off

# vxprint -htg dumpdg
DGNAME NCONFIG NLOG MINORS GROUP-ID
ST NAME STATE DM_CNT SPARE_CNT APPVOL_CNT
DMNAME DEVICE TYPE PRIVLEN PUBLEN STATE
RV NAME RLINK_CNT KSTATE STATE PRIMARY DATAVOLS SRL
RLNAME RVG KSTATE STATE REM_HOSTREM_DG REM_RLNK
CO NAME CACHEVOL KSTATE STATE
VTNAME RVG KSTATE STATE NVOLUME
V NAME RVG/VSET/CO KSTATE STATE LENGTH READPOL PREFPLEX UTYPE
PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE
SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE
SV NAME PLEX VOLNAME NVOLLAYR LENGTH [COL/]OFFAM/NM MODE
SC NAME PLEX CACHE DISKOFFS LENGTH [COL/]OFF DEVICE MODE
DC NAME PARENTVOL LOGVOL
SP NAME SNAPVOL DCO
EX NAME ASSOC VC PERMS MODE STATE
SRNAME KSTATE

dg dumpdg default default 4279000 1224781047.14.mtvrx263

dmc2t0d0s2 c2t0d0s2 auto 32768 35530920 -

#### Create a volume of type "swap"
#vxassist -g dumpdg -U swap make dumpvol 3g

# vxprint -htg dumpdg
DGNAME NCONFIG NLOG MINORS GROUP-ID
ST NAME STATE DM_CNT SPARE_CNT APPVOL_CNT
DMNAME DEVICE TYPE PRIVLEN PUBLEN STATE
RV NAME RLINK_CNT KSTATE STATE PRIMARY DATAVOLS SRL
RLNAME RVG KSTATE STATE REM_HOSTREM_DG REM_RLNK
CO NAME CACHEVOL KSTATE STATE
VTNAME RVG KSTATE STATE NVOLUME
V NAME RVG/VSET/CO KSTATE STATE LENGTH READPOL PREFPLEX UTYPE
PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE
SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE
SV NAME PLEX VOLNAME NVOLLAYR LENGTH [COL/]OFFAM/NM MODE
SC NAME PLEX CACHE DISKOFFS LENGTH [COL/]OFF DEVICE MODE
DC NAME PARENTVOL LOGVOL
SP NAME SNAPVOL DCO
EX NAME ASSOC VC PERMS MODE STATE
SRNAME KSTATE

dg dumpdg default default 4279000 1224781047.14.mtvrx263

dmc2t0d0s2 c2t0d0s2 auto 32768 35530920-

v dumpvol - ENABLED ACTIVE 3145728 SELECT - swap
pldumpvol-01 dumpvol ENABLED ACTIVE 3145728 CONCAT - RW
sdc2t0d0s2-01 dumpvol-01 c2t0d0s20 3145728 0 c2t0d0s2 ENA

# crashconf
Crash dump configuration has been changed since boot.

CLASS PAGES INCLUDEDINDUMP DESCRIPTION
-------- ---------- ---------------- -------------------------------------
UNUSED 10040 no, by default unusedpages
USERPG 115080 no, bydefault user process pages
BCACHE 14573 no, by default buffer cachepages
KCODE 10819 no, bydefault kernel code pages
USTACK 890 yes, by default user processstacks
FSDATA 20 yes, bydefault file systemmetadata
KDDATA 100603 yes, bydefault kernel dynamicdata
KSDATA 7238 yes, bydefault kernel static data
SUPERPG 1088 no, by default unused kernel super pages

Totalpages on system: 260351
Total pagesincluded in dump: 108751

Dumpcompressed: ON

DumpParallel: ON

DEVICE OFFSET(kB) SIZE (kB) LOGICAL VOL. NAME
------------ ------------------------ -------------------------------------
3:0x000001 2350176 2097152 4:0x000001/dev/vx/dsk/rootdg/swapvol

#### Add the volume to crashconf
# crashconf -a/dev/vx/dsk/dumpdg/dumpvol

#### Verify that it is added correctly
#crashconf
Crash dump configuration has been changed since boot.

CLASS PAGES INCLUDED INDUMP DESCRIPTION
-------- ---------- ---------------- -------------------------------------
UNUSED 10197 no, by default unusedpages
USERPG 115131 no, bydefault user process pages
BCACHE 14359 no, by default buffer cachepages
KCODE 10819 no, bydefault kernel code pages
USTACK 890 yes, by default user processstacks
FSDATA 26 yes, bydefault file systemmetadata
KDDATA 100591 yes, bydefault kernel dynamicdata
KSDATA 7238 yes, bydefault kernel static data
SUPERPG 1100 no, by default unused kernel super pages

Totalpages on system: 260351
Total pagesincluded in dump: 108745

Dumpcompressed: ON

DumpParallel: ON

DEVICE OFFSET(kB) SIZE (kB) LOGICAL VOL. NAME
------------ ------------------------ -------------------------------------
3:0x000001 2350176 2097152 4:0x000001 /dev/vx/dsk/rootdg/swapvol
3:0x000000 544896 3145728 4:0x414ad8/dev/vx/dsk/dumpdg/dumpvol <<<<< Is the new volume added

Issue/Introduction

How to add a Volume Manager volume to crashconf on HP-UX using the crashconf -a command

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