How to enable kdump in RHEL 6 for Hitachi Compute Blade 520X (4 Node Configuration only)

Solution Verified - Updated -

Environment

  • Hitachi Compute Blade 520X B1 (4 Node Configuration only)
    • Red Hat Enterprise Linux 6.5
  • Hitachi Compute Blade 520X B2 (4 Node Configuration only)
    • Red Hat Enterprise Linux 6.6
  • Hitachi Compute Blade 520X B3 (4 Node Configuration only)
    • Red Hat Enterprise Linux 6.8

Issue

  • kdump does not work by default in RHEL 6 on Hitachi Compute Blade 520X 4 Nodes Configuration. Changes are needed to enable kdump to work correctly on this server.

Resolution

  • Update the RHEL 6.5 kernel to kernel-2.6.32-431.20.3.el6 or newer.
    • Note: Only for Hitachi Compute Blade 520X B1 (4 Node Configuration only)
  • Edit the "/etc/sysconfig/kdump"
  • Change nr_cpus=1 to nr_cpus=4
    Then add below this:
disable_cpu_apicid=0

KDUMP_COMMANDLINE_APPEND=
  • Restart kdump

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