Commands to restart RMC connection (to HMC from LPAR) It has become very common with the IBM HMC to LPAR (logical/micro partition) communication to drop for unknown reasons. Most of the time this is not a problem unless there is a need to do a dynamic logical partition operation (or DLAPR operation to add/remove resources on the fly). This will become evident during the DLPAR operation when HMC complains about having no RMC connection to LPAR in operation. When this happens run the following commands on the LPAR in question before reattemping the operation. The DLPAR operation will still work with out this connection, but the LPAR needs a restart to see the change in the resources. Restart the RMC connection on the LPAR: # /usr/sbin/rsct/install/bin/recfgct # /usr/sbin/rsct/bin/rmcctrl -p Verify the connection by running: lsrsrc IBM.ManagementServer This will show the HMC IP/hostname and the LPAR information.
Learn all you can from the mistakes of others. You won't have time to make them all yourself
~Alfred Sheinwold