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Revision as of 11:06, 11 July 2011 by Wangcong (talk | contribs)

New mkdumprd for kdump


This is a replacement for mkdumprd of kexec-tools, to switch to dracut to generate the initrd for kdump kernel.


  • Email: <amwang at redhat dot com>

Current status

  • Targeted release: Fedora 16
  • Last updated: 2011-07-11
  • Percentage of completion: 10%


  • Dump to local filesystem


  • Read /etc/kdump.conf to generate initrd
  • Dump to remote host via ssh
  • Dump to remote host via nfs
  • Dump to raw block device
  • Implement full functionality of /etc/kdump.conf
  • Dump to multiple targets

Detailed Description

Currently in kexec-tools we use our own /sbin/mkdumprd to generate an initrd for kdump kernel. However, due to the natural complexity of making a new initrd, we have lots of burdens to maintain the mkdumprd code, we decide to switch to using dracut to generate kdump initrd. And hopefully, we can provide a distro-independent mkdumprd to upstream, as dracut itself is cross-distribution.

Benefit to Fedora

The main source of kexec-tools bugs is in mkdumprd, with this change, hopefully we will reduce the number of bugs of kexec-tools.


All functionality of /sbin/mkdumprd has to be implemented and tested in this new mkdumprd.

How To Test

User Experience

Users should not notice the replacement, because we plan to provide full backward compatibility.



Contingency Plan

Fallback to old /sbin/mkdumprd.


  • Not applicable, because we don't need to make documentations for this transparent replacement.

Release Notes

Comments and Discussion

  • Not applicable, because the main discussion is in a Red Hat internal mailing list.