We are having a problem with our Linux guests. We have 3 2.6.5-7.257-s390x
guests running under z/VM Version 5.1 on an IBM 2066-002?s IFL. It seems
that one guest will just stop responding. What I mean is:
Can not ping it
Can not issue any commands to it
Will not respond to any commands from the z/VM guest console
Cannot select it from the z/VM HTTP performance monitor
It does not seem to be network related and cpu related. Eventually the
Linux guest will become responsive again but the problem will move to
another Linux guest and the cycle starts all over. All our guests seem to
be affected. The hz_timer is set to 0 on all Linux guests. I see nothing
in the Linux logs so I am thinking this might be a z/VM issue.
A CP INDICATE QUEUE for the hung guest shows:
LINUXM03 E3 PS 00103862/00124399
Does anyone have any clues what this problem might be or can they point me
into the right direction to start the diagnosis? Thanks as always.
Peter
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