LBA assignment on vpar system

[Debakanta Biswal]

Q 1. What is LBA ?(work of LBA )motive behind LBA? concept behind LBA?
Q 2. In npar system have different cell (e.g.0,1,2)
I want to create more than one vpar machines on one cell .Is it possible?

I have faced some problem related to the above concept.
I have nPAR machine ,having two cell (1,0).
shell$>ioscan |grep "Local PCI Bus Adapter"
0/0/0 ba Local PCI Bus Adapter (782)
0/0/1 ba Local PCI Bus Adapter (782)
0/0/2 ba Local PCI Bus Adapter (782)
0/0/4 ba Local PCI Bus Adapter (782)
0/0/6 ba Local PCI Bus Adapter (782)
0/0/8 ba Local PCI Bus Adapter (782)
0/0/10 ba Local PCI Bus Adapter (782)
0/0/12 ba Local PCI Bus Adapter (782)
0/0/14 ba Local PCI Bus Adapter (782)
1/0/0 ba Local PCI Bus Adapter (782)
1/0/1 ba Local PCI Bus Adapter (782)
1/0/2 ba Local PCI Bus Adapter (782)
1/0/4 ba Local PCI Bus Adapter (782)
1/0/6 ba Local PCI Bus Adapter (782)
1/0/8 ba Local PCI Bus Adapter (782)
1/0/10 ba Local PCI Bus Adapter (782)
1/0/12 ba Local PCI Bus Adapter (782)
1/0/14 ba Local PCI Bus Adapter (782)

from above staring with "0" h/w path of LBA is belongs to "cell 0" and starting with 1 belongs to cell "1".

I have created the vpar machine on "cell 0 " assigning some of the LBA to vpar machine.faced n/w problem,while added all LBA belongs to cell "0" ,vpar machine came up properly.If i want to create a another vpar machine on cell 0 ,it will n't possible.How i will do another vpar machine on same cell 0 .

What is concept behind the LBA ? is it compulsory to add all LBA of one cell to vapr ?
if not how to determine the which LBA need to add the vapr system for proper work .

Thanks,
Debakanta Biswal.

[Suraj K Sankari]

HI,
>>Q 1. What is LBA ?(work of LBA )motive behind LBA? concept behind LBA?

LBA is Logical Block Addressing
Early PC hard drives were supported by the PC BIOS using Cylinder/Head/Sector addressing.

To read or write from a specific sector on the disk, you specified the sector in terms of its cylinder number, its head number, and its sector number.

LBA adressing uses just one number. In LBA addressing, the first sector on the disk is sector zero and all sectors on the disk are simply incremented from there.

Q 2. In npar system have different cell (e.g.0,1,2)

Yes you can install Vpar into a Npar

Suraj

[Torsten. · Accepted solution]

Q1) LBA is local bus adapter, most of the times this means a PCI(X/e) slot.
So you assign I/O on a PCI slot level. With internal devices the LBA relation is a bit different, you should inspect the ioscan output to get detailed information.

Q2)yes.

[Torsten.]

@Suraj K Sankari: I guess you are wrong here in this context.


Example:

# ioscan -fndlba
Class I H/W Path Driver S/W State H/W Type Description
============================================================
ba 0 0/0/0 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 2 0/0/1 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 3 0/0/2 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 5 0/0/4 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 7 0/0/5 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 9 0/0/6 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 11 0/0/8 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 13 0/0/9 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 15 0/0/10 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 17 0/0/12 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 19 0/0/13 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 21 0/0/14 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 24 2/0/0 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 25 2/0/1 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 26 2/0/2 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 28 2/0/4 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 30 2/0/5 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 32 2/0/6 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 34 2/0/8 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 36 2/0/9 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 38 2/0/10 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 40 2/0/12 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 42 2/0/13 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
ba 44 2/0/14 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (12ee)
#

[Torsten.]

see also

http://docs.hp.com/en/AB297-9014A/img/reo_new.jpg

[Suraj K Sankari]

Hi,

Yes I am wrong here lba means a "local bus adapter"

Suraj

[Suraj K Sankari]

Hi again,

Thanks Torsten....

Suraj

[Debakanta Biswal]

Hi Torsten,
I am not able to get ans of 2nd question.
Thanks,
Deabakanta Biswal

[Torsten.]

You can use all available resources in that nPar for vPar creation, the other cell too, of course. Also you can create multiple vPars on only 1 cell or accross several cells.