How to capture memory dump of a z/VM guest?

Solution Unverified - Updated -

Issue

  • How to capture memory dump of a z/VM guest ?
  • How to capture memory dump of a running guest from z/VM ?
  • How to capture memory dump of a unresponsive Red Hat Enterprise Linux 5 system ?
  • Does kdump work on Red Hat Enterprise Linux 5 ?
  • Unble to get kdump working on s390 Red Hat Enterprise Linux 5 System ?. Following message is noticed while starting kdump service
service kdump restart
Memory for crashkernel is not reserved
Please reserve memory by passing "crashkernel=X@Y" parameter to the kernel
Stopping kdump:[FAILED]

Environment

  • Red Hat Enterprise Linux 5 as a z/VM Guest
  • Red Hat Enterprise Linux 6.0 to 6.2 as z/VM Guest

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