Originally posted by: SystemAdmin

Problem is regarding iSCSI target which is from NAS.

I have assigned a target to my pSeries AIX 5.3 Server. For this to work, I mentioned the target name in "/etc/iscsi/targets" file in the format ---

<IP Address of NAS> <Port No.> <Target Name>

After that, I executed the command --

1. cfgmgr -l iscsi0

I then configured iSCSI Protocol Device. Soon after performing this, I was able to see a new disk appearing.

1. lspv

Then I executed the command --

1. chdev -l hdiskn -a pv=yes (to assign PVID)

I also created a new volume group (newvg) and assigned this disk to it. Finally created filesystem on that disk using the command --

1. crfs -v jfs -g newvg -m /test -A yes -a size=<size in GBs> -a bf=true
2. mount -a

The filesystem got mounted and was able to use it further.

BUT.......

after sometime, I see that the PV becomes inaccessible and while issuing the command --

1. lsvg newvg

i get an error message.

I then restarted the server and then I couldn't even see the PV. I had to issue the command --

1. cfgmgr

after which the disk appeared with no PVID assigned to it.

When I issue the command ---

1. chdev -l hdisk3 -a pv=yes

it gives me an error message which is --

Method error (/usr/lib/methods/chgdisk):
0514-047 Cannot access a device.
pv

Kindly suggest what steps do I need to follow and why it is happening like that.
What other points do I need to consider and how can I get my problem resolved.

TIA
Atul Gautam

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