A fix is available
APAR status
Closed as program error.
Error description
Running shutdown -f in PowerHA may result in a system panic instead of a halt, due to the presence of a new RSCT Dead Man Switch, owned by the Group Services subsystem, to better protect RSCT integrity in the CAA environment. Customers at rsct.basic.rte 3.1.5.6 (or higher) or rsct.basic.rte 3.2.0.2 (or higher) should begin seeing the hags-owned DMS active; check the end of "lssrc -ls cthags" output to verify.
Local fix
To address the issue without a code update, simply add or edit this file: /etc/rc.d/rc2.d/Kcluster The content should be: # -- BEGIN Kcluster content -- case "$1" in start ) exit 0 ;; stop ) CLNAME=$(/usr/sbin/rsct/bin/ct_clusterinfo -c) if [[ -n $CLNAME && $CLNAME != "IW" ]]; then /usr/sbin/rsct/bin/hags_disable_client_kill -s cthags /usr/sbin/rsct/bin/hags_stopdms -s cthags stopsrc -s IBM.ConfigRM exit 0 fi ;; * ) echo "Usage: $0 (start | stop)" exit 1 esac exit 0 # -- END Kcluster content -- If the Kcluster file already exists, it will have some of that content (plus extra comments), without the "hags_stopdms" line. Just add that missing line in the sequence shown above. Note: For customers in need of HIPER APARs IV66606 or IV69760, this fix for /etc/rc.d/rc2.d/Kcluster IS included in those downloadable ifixes.
Problem summary
A solution for preventing RSCT-layer critical reactions in the middle of a shutdown of a PowerHA node was provided by PowerHA in an rc.d script named "Kcluster". This script was missing a recently-introduced HAGS DMS enablement factor, and it was further decided that trying to handle updates or variations in RSCT protection methods would not be practical through a PowerHA deliverable.
Problem conclusion
New RSCT-owned rc.d scripts are being introduced with this APAR, which will handle any AIX shutdown needs on a PowerHA-installed node. It will not conflict with the existing Kcluster file, if already installed. Note that the new RSCT rc.d scripts are specific to PowerHA, and are not applicable to other domain types which might make use of RSCT clustering services.
Temporary fix
Comments
APAR Information
APAR number
IV71572
Reported component name
RSCT/RMC FOR CS
Reported component ID
5765F07AP
Reported release
315
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2015-03-27
Closed date
2016-08-02
Last modified date
2016-10-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
RSCT/RMC FOR CS
Fixed component ID
5765F07AP
Applicable component levels
R315 PSY U874795
UP16/10/20 I 1000
PTF to Fileset Mapping
U874795 rsct.core.utils 3.1.5.13
U874795 rsct.core.utils 3.1.5.13
U874795 rsct.core.utils 3.1.5.13
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11O","label":"APARs - AIX 4.3 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11N","label":"APARs - AIX 5.1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11P","label":"APARs - AIX 5.3 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11M","label":"APARs - AIX 5.2 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"APARs - AIX 7.1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"315","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
20 October 2016