PowerPath: PowerPath command powermt display stops responding in an AIX VIOS environment
Summary: This article explains the solution when the PowerPath command powermt display stops responding in an AIX VIOS environment.
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Symptoms
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.
Cause
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.
Resolution
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.
Additional Information
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
Proprietăți articol
Article Number: 000195987
Article Type: Solution
Ultima modificare: 13 May 2026
Version: 6
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