mkdumprd man page on YellowDog

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MKDUMRD(8)							    MKDUMRD(8)

NAME
       mkdumprd - creates initial ramdisk images for kdump crash recovery

SYNOPSIS
       mkdumprd [--version] [-v] [-f]
		[--preload=module] [--omit-scsi-modules]
		[--omit-raid-modules] [--omit-lvm-modules]
		[--with=module] [--image-version]
		[--fstab=fstab] [--nocompress]
		[--builtin=module]
		image kernel-version

DESCRIPTION
       mkdumprd creates an initial ram file system for use in conjunction with
       the booting of a kernel within the kdump framework for crash  recovery.
       mkdumprds  purpose  is  to  create an initial ram filesystem capable of
       copying the crashed systems vmcore image to  a  location	 specified  in
       /etc/kdump.conf

       Any  module  options  specified in /etc/modprobe.conf are passed to the
       modules as they are loaded by the initial ramdisk.

       mkdumprd interrogates the running system	 to  understand	 what  modules
       need  to	 be  loaded in the initramfs (based on configuration retrieved
       from /etc/kdump.conf)

       mkdumprd was origionally derived from the mkinitrd utility  (hence  the
       simmilarity  in	option sets), however mkdumprds purpose and mission is
       significantly different than that of mkinitrd.  As such, while most  of
       the  options  still  exist, and may work, they are largely vestigual at
       this point.  mkdumprd was not intended for casual use  outside  of  the
       service	initialization script for the kdump utility, and should not be
       run manually.  If you require a custom kdump  initramfs	image,	it  is
       suggested  that you use the kdump service infrastrucutre to create one,
       and then manually unpack, modify and repack the image.

OPTIONS
       --builtin=module
	      Act as if module is built into the kernel being  used.  mkdumprd
	      will  not look for this module, and will not emit an error if it
	      does not exist. This option may be used multiple times.

       -f     Allows mkdumprd to overwrite an existing image file.

       --fstab=fstab
	      Use fstab to automatically determine what type of filesystem the
	      root device is on. Normally, /etc/fstab is used.

       --image-version
	      The  kernel  version number is appended to the initrd image path
	      before the image is created.

       --nocompress
	      Normally the created initrd image is compressed  with  gzip.  If
	      this option is specified, the compression is skipped.

       --omit-lvm-modules
	      Do not load any lvm modules, even if /etc/fstab expects them.

       --omit-raid-modules
	      Do   not	 load	any  raid  modules,  even  if  /etc/fstab  and
	      /etc/raidtab expect them.

       --omit-scsi-modules
	      Do not load any scsi modules, including 'scsi_mod' and  'sd_mod'
	      modules, even if they are present.

       --preload=module
	      Load  the module module in the initial ramdisk image. The module
	      gets loaded before any  SCSI  modules  which  are	 specified  in
	      /etc/modprobe.conf.   This  option  may be used as many times as
	      necessary.

       -v     Prints out verbose information while creating  the  image	 (nor‐
	      mally the mkdumprd runs silently).

       --version
	      Prints the version of mkdumprd that's being used and then exits.

       --with=module
	      Load the modules module in the initial ramdisk image. The module
	      gets loaded after	 any  SCSI  modules  which  are	 specified  in
	      /etc/modprobe.conf.  This	 option	 may  be used as many times as
	      necessary.

FILES
       /etc/modprobe.conf  Specifies modules to be loaded and  module  options
			   to be used.

SEE ALSO
       fstab(5), insmod(1) mkinitrd(8)

				Fri Feb 9 2007			    MKDUMRD(8)
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