topic Re: DUMP disk replacement in Operating System - HP-UX

DUMP disk replacement

Prashant Zanwar_4 — Mon, 05 Dec 2005 14:17:26 GMT

hi,
Situation, i want to replace a alerted dump disk..
- Do i do lvrmboot first on lvol
- vgreduce
- pvcreate
- lvlnboot

Is this ok?
thanks
Prashant

Re: DUMP disk replacement

Steven E. Protter — Mon, 05 Dec 2005 14:23:05 GMT

Shalom Prashant,

Is this dump disk all by itself, with nothing else on it?

pvdisplay -v /dev/dsk/c1t1do
# use a real c1... device

If it is truly alone

lvremove the logical volumes if you can.

then vgreduce
replace the disk
pvcreate
lvcreate
lvlnboot

Dump and swap sometimes do double duty.

Take it slow, and you may need to go to single user or lvm maintenance mode to do this.

SEP

Re: DUMP disk replacement

Pete Randall — Mon, 05 Dec 2005 14:23:55 GMT

Is there anything else on this disk? Your procedure looks basically correct though a little incomplete. The lvlnboot command requires you to specify the logical volume for the dump volume, so you'll need to add vgextend and lvcreate to your list.

Pete

Re: DUMP disk replacement

Prashant Zanwar_4 — Mon, 05 Dec 2005 14:29:23 GMT

It is the only disk by itself and nothing else on it, neither it's mirrored..

1> lvrmboot
2> lvremove
3> vgreduce
4> pvcreate
5> vgextend
6>lvcreate
7> lvlnboot

This sounds good now..

Re: DUMP disk replacement

Devender Khatana — Mon, 05 Dec 2005 14:40:02 GMT

Hi,

Yes these are the steps. But take caution of the arguments

With lvcreate

#lvcreate -n dump -L ??? -C y /dev/vgxx

With lvlnboot

#lvlnboot -d /dev/vgxx/lvol??

HTH,
Devender

Re: DUMP disk replacement

Chan 007 — Sat, 10 Dec 2005 12:46:34 GMT

PZ,

No need to mirror Dump disk. As how it is just waste of space. Bcoz your system will never crash...:-)

Why to waste one disk for it. Just check with crashconf -v and see what is included in dump and allocate that with additional 10% for It.

007