I’ve shared my tips for resolving DLPAR problems in the past. So this week, when one of my colleagues was experiencing an issue with DLPAR, I referred him to my blog post and suggested he follow the troubleshooting steps. He did so and I went about my business. Later that same day I asked him how he had fared. He told me that DLPAR was still not working on his particular AIX LPAR. It was an AIX 5.3 system and he was attempting to another Virtual Processor to the LPAR. He expressed his frustration with the situation, so I offered to take a look for him.

 

What I found was that the system was missing an important fileset. A fileset that enabled DLPAR operations on AIX 5.3 systems. The fileset in question was named csm.client. Without this fileset installed DLPAR would never work.

 

I advised my colleague of the problem and suggested he follow the steps below to resolve the issue. After he reinstalled the fileset, RMC communication between the HMC and LPAR was restored and his DLPAR processor add operation completed without issue.

 

1.  Mount the NIM masters lpp_source file system:

 

aix53lpar1 : / # mount nim1:/export/lpp_source /mnt

 

2.  Verify CSM filesets are not installed and the IBM.DRM subsystem is either inoperative or missing.

 

aix53lpar1 : /# oslevel -s

5300-12-04-1119

 

aix53lpar1 : / # lslpp -l | grep -i csm

aix53lpar1 : / #

 

aix53lpar1 : / # lssrc -a | grep rsct

 ctrmc            rsct             290870       active

 IBM.ServiceRM    rsct_rm          237818       active

 ctcas            rsct                          inoperative

 IBM.ERRM         rsct_rm                       inoperative

 IBM.AuditRM      rsct_rm                       inoperative

 IBM.LPRM         rsct_rm                       inoperative

 IBM.HostRM       rsct_rm                       inoperative

 IBM.DRM          rsct_rm                       inoperative

 IBM.SensorRM     rsct_rm                       inoperative

 

aix53lpar1 : / # lsrsrc IBM.ManagementServer

/usr/sbin/rsct/bin/lsrsrc-api: 2612-010 Resource class IBM.ManagementServer is not defined.

 

 

3.  Verify that the HMC is unable to establish RMC communication with the LPAR (refer to RMC message below on the HMC).

4.  Install the csm.client fileset (and pre-req’s) from the 5300-12-04-1119 lpp_source.

 

aix53lpar1 : / # cd /mnt/lpp_sourceaix531204

aix53lpar1 : /mnt/lpp_sourceaix531204 # installp -agd . csm.client

+-----------------------------------------------------------------------------+

                    Pre-installation Verification...

+-----------------------------------------------------------------------------+

Verifying selections...done

Verifying requisites...done

Results...

 

…etc…

 

Installation Summary

--------------------

Name                        Level           Part        Event       Result

-------------------------------------------------------------------------------

csm.core                    1.7.1.0         USR         APPLY       SUCCESS

csm.core                    1.7.1.0         ROOT        APPLY       SUCCESS

csm.client                  1.7.1.0         USR         APPLY       SUCCESS

csm.client                  1.7.1.0         ROOT        APPLY       SUCCESS

 

5.  Verify that the IBM.DRM subsystem is now active and the HMC can communicate with the LPAR via RMC.

 

aix53lpar1 : / # lssrc -a | grep rsct

 IBM.ServiceRM    rsct_rm          237818       active

 ctrmc            rsct             290876       active

 IBM.CSMAgentRM   rsct_rm          360522       active

 IBM.AuditRM      rsct_rm          446624       active

 IBM.HostRM       rsct_rm          504016       active

 IBM.LPRM         rsct_rm          401568       active

 IBM.DRM          rsct_rm          348364       active

 ctcas            rsct                          inoperative

 IBM.ERRM         rsct_rm                       inoperative

 IBM.SensorRM     rsct_rm                       inoperative

 IBM.MgmtDomainRM rsct_rm                       inoperative

 

aix53lpar1 : / # lsrsrc IBM.ManagementServer

Resource Persistent Attributes for IBM.ManagementServer

resource 1:

        Name             = "10.10.10.252"

        Hostname         = "10.10.10.252"

        ManagerType      = "HMC"

        LocalHostname    = "10.10.10.65"

        ClusterTM        = "9078-160"

        ClusterSNum      = ""

        ActivePeerDomain = ""

        NodeNameList     = {"aix53lpar1"}

resource 2:

        Name             = "10.10.10.251"

        Hostname         = "10.10.10.251"

        ManagerType      = "HMC"

        LocalHostname    = "10.10.10.65"

        ClusterTM        = "9078-160"

        ClusterSNum      = ""

        ActivePeerDomain = ""

        NodeNameList     = {"aix53lpar1"}

 

aix53lpar1 : / # lsrsrc IBM.MCP

Resource Persistent Attributes for IBM.MCP

resource 1:

        MNName           = "10.10.10.65"

        NodeID           = 12019572219563664974

        KeyToken         = "10.10.10.251"

        IPAddresses      = {"10.10.10.251","172.16.0.1"}

        ActivePeerDomain = ""

        NodeNameList     = {"aix53lpar1"}

resource 2:

        MNName           = "10.10.10.65"

        NodeID           = 6374098991051202638

        KeyToken         = "10.10.10.252"

        IPAddresses      = {"10.10.10.252","172.17.0.2"}

        ActivePeerDomain = ""

        NodeNameList     = {"aix53lpar1"}

 

Tags:  csm_core chris_gibson csm.client aix ibm.drm lpar csm_client lsrsrc dlpar lssrc