topic Add additional dump using crashconf in Operating System - HP-UX

Add additional dump using crashconf

Marilyn DuChene — Sun, 11 Apr 2010 05:10:26 GMT

I have 11.31 and am trying to add a second dump vol. My swap and dump are separate devices.

I ran:
lvcreate -C y -r n -L 5120 -n dump2 /dev/vg00
crashconf -a /dev/vg00/dump2
and I get:
/dev/vg00/dump2: error: device is fully occupied by a file system

How to proceed?

Re: Add additional dump using crashconf

Benoy Daniel — Sun, 11 Apr 2010 23:59:01 GMT

To enable dump across boot without an immediate reboot, add the dump volume entry in /etc/fstab file:
... Dump defaults 0 0
vi /etc/fstab and add
/dev/vgxx/dumpxx ... dump defaults 0 0
Run /sbin/crashconf â a
This will allow the /etc/fstab file to be read, and all dump devices identified in it will be added to the current list of crash dump devices.
To verify:
Run crashconf -v to see whether the dump is configured.

Re: Add additional dump using crashconf

Kapil Jha — Mon, 12 Apr 2010 06:59:41 GMT

do a
dd if=/dev/null of=/dev/vg00/rdump2 bs=1024k

then crashconf -a

and/or

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1001616

BR,
Kapil+

Re: Add additional dump using crashconf

Marilyn DuChene — Mon, 12 Apr 2010 11:16:21 GMT

I tried the dd command - and still it gives me the same error. I thought this might work - but no luck.

As for adding an entry in fstab - doesn't seem to matter if I do it on the command line or add it into /etc/fstab first and then try the crashconf -a.

Re: Add additional dump using crashconf

melvyn burnard — Mon, 12 Apr 2010 11:37:41 GMT

what does the lvdisplay of that lvol show?

Re: Add additional dump using crashconf

Marilyn DuChene — Mon, 12 Apr 2010 11:55:15 GMT

axis1#lvdisplay -v /dev/vg00/Dump2 |more
--- Logical volumes ---
LV Name /dev/vg00/Dump2
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 5200
Current LE 325
Allocated PE 325
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default

--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/disk/disk5_p2 325 325

Re: Add additional dump using crashconf

Dennis Handly — Mon, 12 Apr 2010 14:40:07 GMT

>Kapil: dd if=/dev/null of=/dev/vg00/rdump2 bs=1024k

Did you really want /dev/null or /dev/zero?

Re: Add additional dump using crashconf

Marilyn DuChene — Mon, 12 Apr 2010 16:19:14 GMT

/dev/zero works like a charm - I guess I didn't overwrite anything with the /dev/null (which seems obvious now...)

#dd if=/dev/zero of=/dev/vg00/rDump2 bs=1024k
939+0 records in
938+0 records out (and stopped it after a few seconds)

axis1#crashconf -a /dev/vg00/Dump2

checked w/ crashconf -v (and everything looks good) Thanks for the help.

Re: Add additional dump using crashconf

Dennis Handly — Mon, 12 Apr 2010 16:36:52 GMT

>Thanks for the help.

If you are happy with the answers you got, please read the following about assigning points:
http://forums.itrc.hp.com/service/forums/helptips.do?#33