Kdump only generates vmcore-dmesg.txt due to an erroneous entry in makedumpfile's command line

Solution Verified - Updated -

Issue

  • Kdump is not generating a vmcore with the below line in kdump.conf:

    core_collector makedumpfile -d 31 –c
    
  • /var/crash only contains vmcore-dmesg.txt after testing Kdump.

Environment

  • Red Hat Enterprise Linux 5

  • Red Hat Enterprise Linux 6

  • Red Hat Enterprise Linux 7

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