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Disk management in HPUX11i v3

 
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senthil_kumar_1
Super Advisor

Disk management in HPUX11i v3

Hi All,

I have used HPUX 10.20, 11.00 and 11.11 only.

Now i have to work in HPUX 11i V3.

I found some information about disk and VG that differs from older version.

Please find the attachement for details.



13 REPLIES
Wouter Jagers
Honored Contributor
Solution

Re: Disk management in HPUX11i v3

On v3 the root disk is sliced into three partitions:
- p1 is the EFI boot partition
- p2 is the actual HPUX OS partition
- p3 is a support tools partition (offline diagnostics tools can go here)

So the PV for the os is indeed partition 2 of the root disk.

Also check out the "New" way of this ioscan command:
ioscan -funNCdisk

A good doc on the renewed storage stack in v3 is at "http://docs.hp.com/en/MassStorageStack/The_Next_Generation_Mass_Storage_Stack.pdf

Cheers,
Wout
an engineer's aim in a discussion is not to persuade, but to clarify.
James R. Ferguson
Acclaimed Contributor

Re: Disk management in HPUX11i v3

Hi:

You're are looking at an Itanium server where the boot disk is "sliced" (the "s"). There are any number of documents to acquaint you with HP-UX 11iv3 here:

http://docs.hp.com/en/hpux11iv3.html

Regards!

...JRF...
Jannik
Honored Contributor

Re: Disk management in HPUX11i v3

http://www.scribd.com/doc/4379515/Itanium

page 10.

The overview:
s1 MBR, EFI
s2 OS
s3 HPSP, EFI backup
jaton
Steven E. Protter
Exalted Contributor

Re: Disk management in HPUX11i v3

Shalom,

Just went through this myself, in spite of having some 11.31 time.

What was once invisible, in the PA-RISC world, and used very little space, now uses a little more space and is visible.

On most of the 11.31 systems here, the actual OS goes in p2, the other two as noted are for EFI and bood loader.

EFI is necessary to help the OS talk to the hardware and do useful things like booting.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
James R. Ferguson
Acclaimed Contributor

Re: Disk management in HPUX11i v3

Hi:

It irritates me no end to see what is supposed to be propriety HP documentation copied and dispersed on the Internet. I refer to the PDF at:

http://www.scribd.com/doc/4379515/Itanium

This appears to be a verbatim copy of a chapter in HP's Software Recovery Handbook, which in part reads, "THE SOFTWARE RECOVERY HANDBOOK IS HERE MADE AVAILABLE TO HP CONTRACT CUSTOMERS FOR THEIR INTERNAL USE ONLY AND ON THE CONDITION THAT NEITHER THE SOFTWARE RECOVERY HANDBOOK NOR ANY OF THE MATERIALS IT CONTAINS IS PASSED ON TO ANY THIRD PARTY."

See:

http://www.itrc.hp.com/service/rsb/rsbDisplay.do?fileName=highlights/hp-ux_sw_recovery.htm

...JRF...
melvyn burnard
Honored Contributor

Re: Disk management in HPUX11i v3

I will report this blatant copyright infringement
My house is the bank's, my money the wife's, But my opinions belong to me, not HP!
James R. Ferguson
Acclaimed Contributor

Re: Disk management in HPUX11i v3

Hi:

> Melvyn: I will report this blatant copyright infringement

@ Melvyn, thanks very much. There is far too much c*ap like this today.

Regards!

...JRF...
senthil_kumar_1
Super Advisor

Re: Disk management in HPUX11i v3

Hi All,

I have two questions:

1) So you are telling that in integrity servers, the disks will be shown as /dev/disk/disk3 not as /dev/dsk/cXtXdX.

but in PA-RISC, it will be shown as /dev/dsk/cXtXdX

2) The three partitions (p1, p2 and p3) are created automatically while installing new OS?

3)How to see the size of the P1 and P3 from hpux (with in OS).

4)LVM concept in 11.31 is same as 11.11?

5)can we use /dev/rdisk/disk2 instead /dev/disk/disk2 (it is being used in my server) to create a PV?

6)in integrity can i use /dev/rdsk/c0t0d0 to create a PV?




James R. Ferguson
Acclaimed Contributor

Re: Disk management in HPUX11i v3

Hi (again):

> I have two questions:

No, you have six (6)!

> 1) So you are telling that in integrity servers, the disks will be shown as /dev/disk/disk3 not as /dev/dsk/cXtXdX. but in PA-RISC, it will be shown as /dev/dsk/cXtXdX

No, not necessarily; read on.

> 2) The three partitions (p1, p2 and p3) are created automatically while installing new OS?

Yes.

> 3)How to see the size of the P1 and P3 from hpux (with in OS).

You don't.

> 4)LVM concept in 11.31 is same as 11.11?

Yes,

> 5)can we use /dev/rdisk/disk2 instead /dev/disk/disk2 (it is being used in my server) to create a PV?

Yes.

> 6)in integrity can i use /dev/rdsk/c0t0d0 to create a PV?

Yes.

There are a great number of documents on the HP web about 11iv3 and its new features. Relative to this question you have posted, you might begin with:

http://docs.hp.com/en/LVMmigration1/LVM_Migration_to_Agile.pdf

Regards!

...JRF...
senthil_kumar_1
Super Advisor

Re: Disk management in HPUX11i v3

So only integrity servers are having three partitions on root disk but not PA-RISC?
James R. Ferguson
Acclaimed Contributor

Re: Disk management in HPUX11i v3

Hi (again):

> So only integrity servers are having three partitions on root disk but not PA-RISC?

That's correct. Slice (partition) #2 is for HP-UX. An Itanium boot disk is partitioned with the 'idisk' utility.

Regards!

...JRF...
Torsten.
Acclaimed Contributor

Re: Disk management in HPUX11i v3

>> I have two questions:


I count some more ...


1) So you are telling that in integrity servers, the disks will be shown as /dev/disk/disk3 not as /dev/dsk/cXtXdX.

but in PA-RISC, it will be shown as /dev/dsk/cXtXdX


No, both can show you the "old" and "new" style!

e.g.

# ioscan -fn
vs.
# ioscan -fN
or better
# ioscan -m dsf


2) The three partitions (p1, p2 and p3) are created automatically while installing new OS?

Yes they are.

3)How to see the size of the P1 and P3 from hpux (with in OS).

Witch idisk or diskinfo

4)LVM concept in 11.31 is same as 11.11?

Yes and no. LVM v1 is pretty much the same, LVM v2.x is newer with more features and new limits.

5)can we use /dev/rdisk/disk2 instead /dev/disk/disk2 (it is being used in my server) to create a PV?

pvcreate is always requiring the "r"aw device

6)in integrity can i use /dev/rdsk/c0t0d0 to create a PV?

Yes for data, no for boot disks.

The boot disk is always partition 2!


e.g.

/dev/dsk/c1t2d3s2
or
/dev/disk/disk2_p2

Hope this helps!
Regards
Torsten.

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Michael Steele_2
Honored Contributor

Re: Disk management in HPUX11i v3

Hi

Hmmm. A Pa risc server has two partition. The is the boot lif, the 2nd is the O/S.
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