1MKDUMRD(8)                  System Manager's Manual                 MKDUMRD(8)
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NAME

6       mkdumprd - creates initial ramdisk images for kdump crash recovery
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SYNOPSIS

9       mkdumprd [OPTION]
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DESCRIPTION

13       mkdumprd creates an initial ram file system for use in conjunction with
14       the booting of a kernel within the kdump framework for crash  recovery.
15       mkdumprds  purpose  is  to  create an initial ram filesystem capable of
16       copying the crashed systems vmcore image to  a  location  specified  in
17       /etc/kdump.conf
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19       mkdumprd  interrogates  the  running  system to understand what modules
20       need to be loaded in the initramfs (based  on  configuration  retrieved
21       from /etc/kdump.conf)
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23       mkdumprd  add a new dracut module 99kdumpbase and use dracut utility to
24       generate the initramfs. When generating  a  kdump  initramfs,  mkdumprd
25       will  determine  how much disk space is available, if the dump target's
26       available space is not greater than the total system  memory,  mkdumprd
27       will  print a warning to remind that there might not be enough space to
28       save a vmcore. The warning covers extreme scenarios such  as  the  slab
29       explodes  with  non-zero data or a full vmcore, etc. Therefore, need to
30       prevent users from having minimum disk space for crash dump.
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32       mkdumprd was not intended for casual use outside of  the  service  ini‐
33       tialization  script  for the kdump utility, and should not be run manu‐
34       ally.  If you require a custom kdump initramfs image, it  is  suggested
35       that  you  use the kdump service infrastructure to create one, and then
36       manually unpack, modify and repack the image.
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OPTIONS

41       All options here are passed to dracut  directly,  please  refer  dracut
42       docs
43              for the info.
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SEE ALSO

47       dracut(8)
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51                                Fri Feb 9 2007                      MKDUMRD(8)
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