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LPAR disk issue

LPAR disk issue

LPAR disk issue

We are real new at anything to do with LPARS. We have a 520 that we are using to learn on. I purchased the CoD activation key and installed that . I was finally able to load the VIO software after deleting the partition that had AIX on it . I created a new partiton but the only way I can see the disk drives so that I can load AIX on that partition is to shut down the VIO server. With the new partition running I can't start the VIO server as the disks don't show up (actually nothing shows up at all when I look for bootable devices) VIO is loaded on hdisk1 and AIX partiton is loaded on hdisk0.

I did create a virtual SCSI adapter in the VIO and ran the command mkvdev -f -vdev hdisk0 -vadapter vhost0 and that completed OK but it doesn't show up as a vdisk that I can boot from when I fire up the AIX partition

Any idea what I am doing wrong

RE: LPAR disk issue

You are doing it wrong.

The disk are part of Controller (few hdisks and a CDROM), you can dedicate the Controller it one System and cannot be seen on multiple server.

Here is what you do, bring up the VIO on hdisk0
Create a VG (name it what ever you want - but a relevant name) on hdisk1
# mkvg -s 256 -y <vgname> hdisk1
size of each PP is 256mb, so 1 Gb will have 4 PPs.
Now create a lv on that newly created VG.

# mklv -t jfs2 -y <lvname> <vgname> <no of PP>
Ex: mklv -t jfs2 -y client_rootvg clientvg 120 --> 120=30GB

I assume you know how to create a virtual scsi adapter, create the adapter on client LPAR and VIO.

Once you create the adapters on both (client LPAR and VIO)

run the below on VIO server as padmin
$ lsdev -slots --> this will list you all vhost

$cfgdev --> This will determine the vhost

$mkvdev -vdev <lvname> -vadapter vhostX -dev <backing devicename>
Ex: mkvdev -vdev client_rootvg -vadapter vhost0 -dev rootvg_01

Now check if that is available

$ lsmap -all

Now, you can install the image on the client (LPAR).

Note: You can change the size of lv as per your company standard, but make sure it is not exceeding the total size of VG.

Hope this helps.

Sr. Systems Engineer

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