An adapter that has previously been added to a LPAR and now needs to be removed, usually doesn't want to be removed from the LPAR, because it is in use by the LPAR. Here's how you find and remove the involved devices on the LPAR:

First, run:

# lsslot -c pci

This will find the adapter involved.

Then, find the parent device of a slot, by running:

# lsdev -Cl [adapter] -F parent

(Fill in the correct adapter, e.g. fcs0).

Now, remove the parent device and all its children:

# rmdev -Rl [parentdevice] -d

For example:

# rmdev -Rl pci8 -d

Now you should be able to remove the adapter via the HMC from the LPAR.

If you need to replace the adapter because it is broken and needs to be replaced, then you need to power down the PCI slot in which the adapter is placed:

After issuing the "rmdev" command, run diag and go into "Task Selection", "Hot Plug Task", "PCI Hot Plug Manager", "Replace/Remove a PCI Hot Plug Adapter". Select the adapter and choose "remove".

After the adapter has been replaced (usually by an IBM technician), run cfgmgr again to make the adapter known to the LPAR.



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