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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"}
