Why kdump is restarting within the guest during CPU hot plugging

Solution Verified - Updated -

Issue

  • During CPU hot plugging in RHEV, below messages are logged in the guest
Aug 19 15:20:12  kernel: Will online and init hotplugged CPU: 1
Aug 19 15:20:12 systemd: Stopping Crash recovery kernel arming...
Aug 19 15:20:12  kdumpctl: kexec: unloaded kdump kernel
Aug 19 15:20:12  kdumpctl: Stopping kdump: [OK]
Aug 19 15:20:12  systemd: Starting Crash recovery kernel arming...
Aug 19 15:20:13  kdumpctl: kexec: loaded kdump kernel
Aug 19 15:20:13  kdumpctl: Starting kdump: [OK]
Aug 19 15:20:13  systemd: Started Crash recovery kernel arming.
  • Why kdump service is restarting within the guest during CPU hot plugging

Environment

  • Red Hat Enterprise Virtualization 3.x

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