kdump fails due to late recognition of disks

Solution Verified - Updated -


  • Kdump fails when the 2nd kernel could not recognize the disk which vmcore should be saved in before fsck runs on the 2nd kernel.
  • In my case, the disk is connected through Emulex lpfc but I don't know whether the same problem occurs or not when using other HBAs.

    Creating block device ram4
    Creating block device ram5
    Creating block device ram6
    Creating block device ram7
    Creating block device ram8
    Creating block device ram9
    Creating block device sda
    Creating block device srlpfc 0000:07:00.1: 1:1303 Link Up Event x1 received Data: x1 x1 x8 x2 x0 x0 0
    lpfc 0000:07:00.1: 1:(0):0100 FLOGI failure Status:x3/x18 TMO:x0
    mdadm: No arrays found in config file or automatically
    Free memory/Total memory (free %): 75356 / 114520 ( 65.8016 )
    Saving to the local filesystem LABEL=/dump
    Usage: fsck.ext3 [-panyrcdfvtDFV] [-b superblock] [-B blocksize]
     [-I inode_buffer_blocks] [-P process_inode_size]
     [-l|-L bad_blocks_file] [-C fd] [-j external_journal]
     [-E extended-options] device
    Emergency help:
     -p                   Automatic repair (no questions)
     -n                   Make no changes to the filesystem
     -y                   Assume "yes" to all questions
     -c                   Check for bad blocks and add them to the badblock list
     -f                   Force checking even if filesystem is marked clean
     -v                   Be verbose
     -b superblock        Use alternative superblock
     -B blocksize         Force blocksize when looking for superblock
     -j external_journal  Set location of the external journal
     -l bad_blocks_file   Add to badblocks list
     -L bad_blocks_file   Set badblocks list
    mount: can't find /mnt in /etc/fstab
    dropping to initramfs shell
    exiting this shell will reboot your system
    / #


  • Red Hat Enterprise Linux Version Number: 6.0 SnapShot 8
  • Architecture: x86_64
  • kernel-2.6.32-52.el6.x86_64
  • kexec-tools-2.0.0-130.el6.x86_64.rpm

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