Initramfs for kdump is unexpectedly recreated every time an guest OS boots.

Solution Verified - Updated -

Issue

  • Initramfs for kdump is unexpectedly recreated every time an guest OS boots.
  • It is expected that initramfs is recreated only when some configurations are changed.
  • Initramfs is recreated because the following drivers are not loaded when the kdump service starts up.
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: Detected change(s) of loaded kernel modules list:
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: -devlink
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: -ipt_MASQUERADE
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: -nf_nat_masquerade_ipv4
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: -tun
Dec 07 14:00:23 localhost.localdomain kdumpctl[5405]: -xt_CHECKSUM

Environment

  • Red Hat Enterprise Linux 7.6
  • kexec-tools-2.0.15-21.el7.x86_64

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