topic Re: vPar modify in Operating System - HP-UX

vPar modify

MárcioAFM — Wed, 03 Sep 2008 09:47:48 GMT

Hello,

I have two vPars running in a rx8640. I have two CPU's assigned to each one. I need to remove two CPU's from vPar2 and assign to the vPar1 so vPar1 can have four CPU's.

My plan is:

1.Shutdown the vPar's
2.Reboot in nPar mode
3.vparmodify -p vpar2 -d cpu::2 (remove the 2 CPU's from the vPar2)
4.vparmodify -p vpar2 -a cpu::2 (add more two CPU's two vPar1)
In this step i put the number of CPU i want to add or i put the total number of cpu's i want on the vPar?
5.Reboot in vPar mode

Think is a good plan?

Regards,

Márcio

Re: vPar modify

melvyn burnard — Wed, 03 Sep 2008 10:28:16 GMT

well first question is, what version of Vpars.
Then the next question is, how many cpu's are in each Vpar, an dhow many are bound and how many are floating?
Did you assign any CPU's using hardware addresing?

If there are unbound or floating cpu's. you should be able to simply remove themfrom vPar and add them to the other vPar while they are running

Re: vPar modify

Deepak Kr — Wed, 03 Sep 2008 12:03:36 GMT

I have not checked personally but heard that you can do configuration checks on the fly in latest version of HP-UX 11.31 but with some set of patches...

Probably our big guys can put more light to it.

Your steps seems good enough to work!!

Re: vPar modify

Torsten. — Wed, 03 Sep 2008 12:10:05 GMT

You cannot have a vPar with 0 CPU - you must delete it completely.

Consider this (all depends on the number of configured min vs. max CPUs - sent a "vparstatus"):

- shutdown vPar1 (if needed)
- modify min/max values
- start vPar1
- shutdown vPar2
- remove vPar2
- add 2 CPUs to vpar1

But it will also work if you modify in npar mode ...

Re: vPar modify

MárcioAFM — Wed, 03 Sep 2008 12:19:04 GMT

Hello,

Melvin this is the script i used to create the vPar's:

vparcreate -p vpar1 \
-o "-lq" \
-a cpu::2 \
-a cpu:::1:6 \
-a io:0/0/0 \
-a io:0/0/6 \
-a io:0/0/4 \
-a io:0/0/14 \
-a io:0/0/0/3/1 \
-a io:0/0/12 \
-a io:0/0/0/2/0.6.0:boot \
-a io:0/0/0/3/0.6.0:altboot \
-a mem::32768 \
-g ilm:2048 \

Thanks,

MÃ¡rcio

Re: vPar modify

Torsten. — Wed, 03 Sep 2008 12:20:12 GMT

So you can delete vpar2 from the running vpar1 and add the cpus online.

Re: vPar modify

melvyn burnard — Wed, 03 Sep 2008 12:58:33 GMT

as Torsten says, if you need to use BOTH cpus from vpar1, you will need to halt vpar1, remove vpar1, and then add the 2 cpu's into the running vpar2.

Re: vPar modify

Torsten. — Wed, 03 Sep 2008 13:03:25 GMT

... or vice versa Melvyn... according to the initial post

"I need to remove two CPU's from vPar2 and assign to the vPar1 so vPar1 can have four CPU's."

Anyway, it doesn't make so much sense to run only 1 vPar inside a nPar.

;-)

Re: vPar modify

MárcioAFM — Wed, 03 Sep 2008 13:15:57 GMT

Hello,

Well realy don't make any sense...customer ask, we HP advice... but in the end customer decides.

I think that the customer is planning on buy some iCap licenses :).

I will do this friday, i have the last vPar last version running on HP-UX 11.31, so i will try to do it online just shutting down vPar2 and add 2 cpu's to vPar1 with this one running.

Regards,

Marcio

Re: vPar modify

MárcioAFM — Wed, 10 Sep 2008 07:35:06 GMT

Hello,

I did a online cpu allocation with the vparmodify and works fine. Just have to shutdown the vPar to modify the max number of CPU's.

Best Regards,,

Thanks

Marcio