PowerPath: PowerPath command powermt display stops responding in an AIX VIOS environment

Samenvatting: This article explains the solution when the PowerPath command powermt display stops responding in an AIX VIOS environment.

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Symptomen

PowerPath commands such as powermt display, powermt config stop responding.
Command cfgmgr stops responding as well.
Attempt to use trace to follow a failing command fails.
dbx stops responding as well.

 

Oorzaak

The incorrect read/write mode of a dependent semaphore in PowerPath 6.4 is the cause of this issue.
The mode of a dependent semaphore in the PowerPath 6.4 was set as write.

 

Oplossing

The resolution to this issue is to upgrade PowerPath to version 7.0 or above.

 

 

Note: Disabling emcp_mond cannot be used as a workaround as it is also affected.

 

Extra informatie

Environment:

Array: VMAX 250F

Host: IBM 9179-MHD
AIX: 6100-09-03-1415 (EOSL)
VIO: 2.2.6.21: NPIV Server, vSCSI Server
PowerPath: 6.4

Artikeleigenschappen
Artikelnummer: 000195987
Artikeltype: Solution
Laatst aangepast: 13 mei 2026
Versie:  6
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