[RHEL6 Alpha] fsck command fails while gathering kdump

Solution Verified - Updated -


  • Red Hat Enterprise Linux 6.0 Alpha-3 (and earlier)


  • fsck command fails while gathering kdump:

    Creating block device sda
    Creating block device sr0
    hwlock:can't open '/dev/misc/rtc': No such or directory
    Saving to the local filesystem LABREL=/dump
    end_request: I/O error, dev fd0, sector 0
    fsck.ext3: not found
    Copying data                         : [ 54 %]


The fix has been checked in as of kexec-tools-2.0.0-62.el6 and will be included when RHEL6 is released

Root Cause

Recent busybox versions changed how fsck works.  Now busybox just does a callout to the other fsck utilities (fsck.ext3, fsck.ext4, etc), so they need to be included in the kdump initrd.

Diagnostic Steps

  • reproduced on lab machine
  • review contents of kdump initrd, specifically init script and included binaries

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Typo in output "LABREL=/dump" should be "LABEL=/dump"