VIO

Virtual IO is OS that used for Virtualizing Physical resources like Network adapter and Fibre channel adapter.

Below i am sharing procedure for Creating A Virtual Disk For AIX LPAR.

step1 :

Identify AIX LPAR to which disk need to map

Here i am considering that from storage end disk mapped to VIO server

$lsmap -all     // show device mapping on VIO server

then identify vhost adapter to which LPAR is connected.

How to identify vhost adapter for AIX lpar

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·         Go to AIX LAPR

·         Execute lparstat –i

·         Find partition id

·         If its between 1 to 9 then then no need to convert it to hexadecimal ,but if its above 9(ex.10,11,12,13,14,15)then here need to convert to hexadecimal value.

Take help of calculator to convert decimal value to hexadecimal.

·         Login VIO ,execute lsmap –all ,then find vhost adapter for corresponding lpar id.

Example.Let say LPAR partition id is 7 then find 7 in lsmap –all output in client column on vio.

#lsmap -all

above command will show mapping all adapter and vhost6 is the vadapter

connected to AIX client adapter.

SVSA            Physloc                                      Client Partition ID

--------------- -------------------------------------------- ---------

vhost6          XXXX.XXxxx.zzzzz-V1-C26                     0x00000007

VTD                   os_backup_disk

Status                Available

LUN                   0x00000000000000

Backing device        hdisk6

Physloc

What will be client id on vio if AIX client partition ID is 10 ??

Then value on VIO will be “A”. Because hexadecimal value for 10 is “A” and on VIO server .

AIX partition ID            client ID on VIO

10                                                                    A

11                                                                    B

12                                                                    D

13                                                                    E

14                                                                    F

15                                                                    10

16                   

step 2: Take lspv output in excel file before running "cfgmgr".

then run "cfgmgr " on VIO and take lspv output .

do comparison between lspv output which we took "before running cfgmgr" and "after running cfgmgr".here you will get new disk which is assgined from storage side.

step 3: mkdev command is used to map disk to AIX LPAR

mkvdev -vdev hdiskX -vadapter VhostY -dev Namefordisk 

example.

mkvdev -vdev hdisk12 -vadapter Vhost6 -dev os_backup_disk

step 4:To check whether disk is mapped or not execute following command.

#lsmap -vadapter vhost6

above command will show mapping for vhost6.

SVSA            Physloc                                      Client Partition ID

--------------- -------------------------------------------- ------------------

vhost6          XXXX.XXxxx.zzzzz-V1-C26                     0x00000007

VTD                   os_backup_disk

Status                Available

LUN                   0x00000000000000

Backing device        hdisk6

Physloc

step 5:Then login to AIX LPAR which is client of VIO server and well connected to VIO.

excute "cfgmgr" command but before executing cfgmgr again take lspv command output,this help to identify new disk easily.

#lspv

#cfgmgr

#lspv

here new disk will be available on AIX LPAR and then add to required volume group or create new volume group using this disk or add to any existing volume group.

Thanks

will keep writing....