kdump fails to save a vmcore when a short host name is specified as a network target

Solution Unverified - Updated -

Issue

  • kdump fails to save a vmcore when a short host name is specified as an nfs mount target:

Note: The following is an example etc/kump.conf

core_collector makedumpfile -d 31 -c
net host123:/crashdumps
  • Serial console logs:
...
Saving to remote location host123:/crashdumps
mount: host123: Host name lookup failure
mount: nfsmount failed: Success
mount: Mounting host123:/crashdumps on /mnt failed: Success
Attempting to enter user-space to capture vmcore
...

Environment

  • Red Hat Enterprise Linux 5

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