AIX

Originally posted by: SystemAdmin

Hello,

I have been trying to uninstall devices.common.IBM.mpio.rte from an aix5.3 box but have not been able because it shows a whole list of dependant bos & devices packages.

I have tried deleting the hdisks, dars and the dacs using rmdev -dl, but it still doesn't work.

Any help on how to get the mpio package uninstalled is appreciated.

Thanks!

Originally posted by: SystemAdmin

Have u checked the dependencies fileset?

Originally posted by: SystemAdmin

send me the fileset list.

Originally posted by: SystemAdmin

Thanks! Here you go. I have attached the list to this post.

Originally posted by: tony.evans

Just interested in why you're trying to remove this fileset?

Originally posted by: SystemAdmin

This is a developer environment and I need only RDAC (devices.fcp.disk.array.rte) to manage the disks.

Originally posted by: jvk

There is no need to deinstall above fileset.
AIX respects 'host attach. script' (if there is any) and will not use mpio unless host attach. is there and is non-mpio. With RDAC on AIX 5.3 and DS4k you should not see mpio disks....

Originally posted by: SystemAdmin

Oh, that's kinda cool. What does the 'host attach. script' do? Where can I find it? Right now I have RDAC on the server attached to a DS4K array.

Originally posted by: jvk

Host attach. script updates ODM with right disk parameters. Every disk vendnor has some specifics...
For IBM storage like DS6k, DS8k and SVC you'll not use only host attach. script but most probably also some multipathing SW like SDD (non-mpio) or SDDPCM (comes on top of mpio). Similar with EMC, HP and Hitachi boxes.
For a DS4k, RDAC comes with initial AIX installation, so no need for a host. attach there. Be aware that also DS4k can be switched to MPIO in later AIX 5.3 TL versions and AIX 6.1 but some manual tasks needs to be done for this.

Originally posted by: SystemAdmin

Thank You!

Exactly! AIX5.3 has native rdac support for a DS4k array. I had initially configured it to have MPIO manage the disks, but now I need only rdac to manage the disks/path for some negative testing and I am not able to get the MPIO off the host.

Any other suggestions?

Originally posted by: SystemAdmin

OK, I could get RDAC to manage the disks without having to deinstall MPIO. I was not aware of command "manage_disk_drivers". This command did the trick that I had been trying for nearly 2 days now.

The issue now is; I could get the DS4k disks migrated to RDAC. But I am not able to identify which class of arrays the following disk belongs to (in bold below).

bash-3.00# lscfg -vl hdisk1
hdisk1 U788C.001.AAA8888-P1-C14-C2-T1-W201C00A0B829EA48-L1000000000000 MPIO Other FC SCSI Disk Drive

Manufacturer................IBM
Machine Type and Model......1818 FAStT
ROS Level and ID............30373330
Serial Number...............
Device Specific.(Z0)........0000053245005032
Device Specific.(Z1)........

Once I figure this out i think I'll be in a much better shape. In the mean time, any help is appreciated.

Thanks!
Edit/Delete Message