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Status Not under consideration
Workspace GDPS
Created by Guest
Created on Dec 21, 2018

RELATED IDEAS

Request to include in the GDPS monitoring functions to verify the QHA for duplicated PATH-GROUP-IDs.

The Itau bank faced a situation related to the information showed by the command "DS QD,<dev>,QHA,1". They needed to init disk volumes, but few of them failed informing that were PATH-GROUP-IDs online, the interesting thing when they checked the vary offline command it worked successfully and there is no lpar outside the sysplex accessing those dasd units.
We checked the output from the command "DS QD,<dev>,QHA,1" and found duplicated PATH-GROUP-IDs for the same z14 machine, it means for the same lpar there were 2 PATH-GROUP-IDs, one online and another one offline. It was the reason why the init failed.
To solve this situation, the IBM DASD hardware team needed to run a procedure called dummy replace for the host adapter that had the duplicated information.
Through this RFE, the Itau support is requesting a new enhancement for the GDPS team to check this kind o situation and send a warning message to the Netlog and in case of recurrence it will be possible to monitor this new message and alert the Operation and Support teams.
GDPS has a panel that uses the QHA and the current version installed here is the 3.14.
Example of "DS QD,976C,QHA,1" output with duplicated entries:

DS QD,976C,QHA,1
IEE459I 18.15.44 DEVSERV QDASD 688
UNIT VOLSER SCUTYPE DEVTYPE CYL SSID SCU-SERIAL DEV-SERIAL EFC
0976C ------ 2107961 2107900 65520 91D0 0182-CRV41 0182-CRV41 BYP
QUERY HOST ACCESS TO VOLUME
PATH-GROUP-ID FL STATUS SYSPLEX SYSTEM MAX-CYLS
8000098E283906D52B90A0 00 OFF SYSPLEXA N/A 1182006
80000C8E283906D5359662 00 OFF SYSPLEXA N/A 1182006
80000847F72964D52B8208 00 OFF SYSPLEXA N/A 1182006
800003C4883906D53BE420 00 OFF SYSPLEXA N/A 1182006
80000F61A83906D526918B 00 OFF SYSPLEXA N/A 1182006
800005C4883906D53816D6 00 OFF SYSPLEXA N/A 1182006
80000371A83906D52CC504 50 ON SYSPLEXA N/A 1182006 -> DUP
80000161A83906D53804C5 00 OFF SYSPLEXA N/A 1182006
80000271A83906D53F9045* 00 OFF SYSPLEXA N/A 1182006 -> DUP
80000771A83906D52F390F 50 ON SYSPLEXA N/A 1182006 -> DUP
80000271A83906D52514B2 50 ON SYSPLEXA N/A 1182006 -> DUP
80000D61A83906D51D8B6D 00 OFF SYSPLEXA N/A 1182006
80000471A83906D525152A 50 ON SYSPLEXA N/A 1182006 -> DUP
80000E71A83906D5251592 50 ON SYSPLEXA N/A 1182006 -> DUP
80000A47F72964D53D1017 00 OFF SYSPLEXA N/A 1182006
80000771A83906D536AE5E 00 OFF SYSPLEXA N/A 1182006 -> DUP
80000371A83906D536AF9C 00 OFF SYSPLEXA N/A 1182006 -> DUP
80000471A83906D536B251 00 OFF SYSPLEXA N/A 1182006 -> DUP
80000E71A83906D536B1A1 00 OFF SYSPLEXA N/A 1182006 -> DUP
800006AA983906D53E5E07 00 OFF SYSPLEXA N/A 1182006
**** 20 PATH GROUP ID(S) MET THE SELECTION CRITERIA
**** 1 DEVICE(S) MET THE SELECTION CRITERIA
**** 0 DEVICE(S) FAILED EXTENDED FUNCTION CHECKING

Idea priority Medium
  • Guest
    Reply
    |     Aug 5, 2022
    After giving the request a comprehensive review, we have determined that we cannot include it as a candidate in an upcoming release because it won't be pursued within our planning cycle.

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