Visit Our UNIX and Linux User Community

Uninstall native MPIO driver on AIX

Thread Tools Search this Thread
Operating Systems AIX Uninstall native MPIO driver on AIX
# 1  
Old 04-21-2010
Uninstall native MPIO driver on AIX


I was trying to uninstall the native MPIO driver on the AIX 6.1 machine we have in our lab and ran into a whole bunch dependent filesets initially. I deleted the disks, fcsX, fscsiX, fcnetX and tried again, but ran into the same error.

Subsequently, I figured out that the OS disks in this machine were also being managed by MPIO. SO, how do i remove the fileset?

Any help is appreciated.
# 2  
Old 04-22-2010
Why do you want to deinstall it at all - if it is because you want to use something like powerpath or EMC MPIO instead, you don't have to deinstall the native MPIO - you only need to drop disks, adapters and so on , than install the powerpath software and reboot the system - when it comes up, it will use powerpath instead of MPIO.

Hope this helps
# 3  
Old 04-22-2010
With powerpath you don't need to drop the disks - just varyoffvg each volume group and reboot. A utility is provided to put the rootvg under powerpath as well.

As long as 1 disk is running under MPIO you won't be able to uninstall the device driver - however this isn't recommended practice for AIX, as best practice is to have all your device drivers loaded in case you have to restore after a disaster.

Would you mind telling us why you want to uninstall MPIO?
# 4  
Old 04-24-2010

I work in a storage lab and have been doing some tests on the firmware running on the DS series of arrays with different operating systems and AIX happened to be one of them. I have to confirm a behavior as part of my use case and the test goes something like this -

Configure MPIO to manage the luns.
Verify the luns are presented appropriately on the paths coming from the array.
Take the failover driver out of service.
Perform a bus scan and verify that all the luns are presented on both the paths coming from the array.

I did not realize that MPIO was managing the internal SAS HDDs as well. I guess it is impossible to remove MPIO if it manages even one device.

Any thoughts on how this can be done?
# 5  
Old 04-24-2010
"Take the failover driver out of service."

What sort of test is that, when it is part of the operating system?

You may as well issue the shutdown command and then just be satisfied that it will not work if the operating system is down!

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Native AIX TL Upgrade on a VIO Server

What happens if we perform a Native AIX TL Upgrade on a VIO server? I mean instead of updateios I logged into oem_setup_env and ran a update_all to a new TL. (2 Replies)
Discussion started by: wibhore
2 Replies

2. AIX

issue AIX MPIO path closed

Hello, I have encountered the issue on my AIX 6.1. As you can see below, the hdisk1 & hdisk8 are not recognized by the system / > lspv hdisk0 00fa6d1288c820aa rootvg active hdisk1 00fa6d1288c8213c None hdisk2 ... (9 Replies)
Discussion started by: Phat
9 Replies

3. AIX

AIX native SNMP producing limited results when walking MIB tree

The company I work for has various AIX servers that I've recently migrated to AIX 7.1 (from 6.1). Some are powerHA clusters some are not. Likewise, the systems engineer that I replaced had net-snmp installed on said clustered systems. Long story short I am re-invoking AIX's native SNMP (v3) for... (1 Reply)
Discussion started by: davix
1 Replies

4. AIX

Uninstall and reinstall AIX

Hi All, Currently I have a machine running on AIX5.3 (standalone). I plan to remove this AIX5.3 and install with new AIX6.1. This is a testing server so no backup are required. I just want to know, what is the best way to do this. For your information, I'm still new in AIX, so i dont have much... (1 Reply)
Discussion started by: aremint
1 Replies

5. AIX

Upgrading from native MPIO to SDDPCM AIX 6.1

We have AIX 6.1 system attached to SAN disks (DS4700 and DS8100) thru SVC. Initially when the system was I forgot to install sddpcm drivers. and wanted to know how can i go with the installation of the sddpcm drivers. My understandin going thru the manual ... (3 Replies)
Discussion started by: mk8570
3 Replies

6. AIX

MPIO Driver

On a particular LPAR, I was running AIX 5.3 TL 3. On Monday I did an update of the LPAR to 5.3 TL 9 SP2. The install was smooth, but then I ran into a problem. The MPIO driver does not work with LSI's StoreAge (SVM4). I did some looking, and looks like 5.3 TL3 = IBM.MPIO 5.3... (0 Replies)
Discussion started by: clking
0 Replies

7. AIX

AIX native MPIO

Hi folks, does anybody have a link to a documentation how to implement native MPIO on AIX? We are using EMC PowerPath and Datacore SanSymphony/Cambex for this so far and I wasn't able to find a good description on that topic. All I know so far is that mkpath, chpath and lspath are used to... (3 Replies)
Discussion started by: zaxxon
3 Replies

8. AIX

AIX 5.3 MPIO vs RDAC on DS4000 range

Hi I would like to ask what the benefits are of changing from RDAC to MPIO when connecting to a DS4000 on AIX 5.3? I have heard that IBM MPIO "might" support more than 1 active path to a LUN when connecting to a DS4800 through more than 1 host connection on the same AIX client. I understand that... (8 Replies)
Discussion started by: kimyo
8 Replies

9. Solaris

Perl - How to uninstall? Will pkgrm uninstall all versions?

Hello, I'm working on a Solaris 9/Sparc machine and it has the Solaris 10 version of Perl (5.8.8) installed on it, which always requires all kinds of library files that Solaris 9 doesn't come with. I think the best way to do is to uninstall this wrong version and install the correct Solaris 9... (1 Reply)
Discussion started by: alanlh
1 Replies

10. UNIX for Advanced & Expert Users


We are looking at running MPIO for it's redundancy and load balancing benefits. Does anyone know what pieces of software or modules are needed on the VIO server to get load balancing to work. Remember we are using EMC's DMX3500 storage system. We no longer want to use Powerpath. :rolleyes: ... (2 Replies)
Discussion started by: vxg0wa3
2 Replies

Featured Tech Videos