A fix is available
APAR status
Closed as program error.
Error description
************************************************************** * USERS AFFECTED: * Customers using PowerHA System Mirror who have updated to or * are planning to update to the following affected AIX levels: * -> 7.1 TL4 SP0 through SP4 * -> 7.2 TL0 SP0 through SP4 * -> 7.2 TL1 SP0 through SP2 ************************************************************** * PROBLEM DESCRIPTION: * One or more cluster nodes may crash or suffer other failures * during the update process while updating to OR from the * affected AIX levels. * This often reports a "domain merge" in the AIX errpt. * The crash or failure is not limited to the node being updated. * * The introduction of a new executable path in the Group * Services subsystem in RSCT 3.2.1.0 (introduced in AIX 7.1 TL4 * and 7.2 TL0) can cause communication issues between nodes as * they are updated one at a time, and running different code * levels. ************************************************************** * RECOMMENDATION: * Depending on the current level and desired update: * * I. Customers already at (or updating from) the affected AIX * levels. * * Install an ifix from below before doing any further AIX * updates. * ftp://aix.software.ibm.com/aix/ifixes/iv90451/ * https://aix.software.ibm.com/aix/ifixes/iv90451/ * * II. Customers updating to the affected AIX levels * * 1) Bring PowerHA and CAA cluster services offline on * the node being updated prior to applying the AIX * update. * # clmgr offline node STOP_CAA=yes * * 2) Update AIX as planned, install an ifix from below, * then reboot. * ftp://aix.software.ibm.com/aix/ifixes/iv90451/ * https://aix.software.ibm.com/aix/ifixes/iv90451/ * * 3) After rebooting, bring PowerHA and CAA cluster * services back online: * # clmgr online node START_CAA=yes * * III. Customers who can avoid the affected AIX levels * * Customers at non-affected levels will be able to * upgrade directly to AIX 7100-05 or 7200-02 without any * special instructions or ifix. * Customers at 7100-04 or 7200-00 will need to wait for * the SP04 delivery before an ifix is not needed. * For customers at 7200-01, that target is SP03. * **************************************************************
Local fix
Customers who do not wish to deal with an ifix can simply bring PowerHA and CAA cluster services offline on the node being updated prior to applying the AIX update. # clmgr offline node STOP_CAA=yes After updating AIX and rebooting, bring PowerHA and CAA cluster services back online. # clmgr online node START_CAA=yes
Problem summary
While updating the AIX release of a PowerHA 7 node to OR from one of the affected AIX Levels listed above... One or more cluster nodes may crash or suffer some other failure during the update process. This often reports a "domain merge" in the AIX errpt. The crash or failure is not limited only to the node being updated. . The introduction of a new executable path in the Group Services subsystem in RSCT 3.2.1.0 (introduced in AIX 7.1 TL4 and 7.2 TL0) can cause communication issues between nodes as they are updated one at a time, and running different code levels. Whether problems will happen or not is not easily predictable, so it is recommended that everyone take the necessary steps below to prevent the issue from occurring.
Problem conclusion
At new code levels, the hagsd path will return to the path used prior to the introduction of AIX 7.1.4 and 7.2.0
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
IV90451
Reported component name
RSCT FOR AIX
Reported component ID
5765F07AP
Reported release
321
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Submitted date
2016-11-03
Closed date
2016-11-04
Last modified date
2018-05-02
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 FOR AIX
Fixed component ID
5765F07AP
Applicable component levels
R321 PSY U879224
UP18/05/02 I 1000
PTF to Fileset Mapping
U876053 rsct.core.utils 3.2.1.13
U876054 rsct.core.rmc 3.2.1.13
U876055 rsct.basic.rte 3.2.1.12
U876053 rsct.core.utils 3.2.1.13
U876054 rsct.core.rmc 3.2.1.13
U876055 rsct.basic.rte 3.2.1.12
U879222 rsct.core.utils 3.2.1.15
U879222 rsct.core.utils 3.2.1.15
U879224 rsct.core.rmc 3.2.1.15
U879224 rsct.core.rmc 3.2.1.15
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Document Information
Modified date:
02 May 2018