We periodically get the message
18:07:57 HCPDPM1281I Path 2D to device 780D now offline; path group ID mismatch.
for devices on a dasd string. These devices are used by a native TPF system and
by TPF guests of VM. The description I find is:
HCP1281I Path channel to device rdev now offline; path group ID mismatch.
Explanation: The operating system has detected that one of the paths to a
device has a path group ID that does not match that which the system uses to
access the device. Since attempts to use this path would result in "hang"
conditions, the system has marked the path offline.
System Action: System action continues.
Operator Response: If possible, physically reset the path and then vary it
online to that device.
The system seems to chug along normally. If we query paths to one of the
devices, it shows all paths to be both physically and logically available. Can
anyone hazard a guess as to (a) What the message is trying to tell us, and (b)
what should be done about it? FWIW, the DASD is HDS.
Regards,
Richard Schuh
