examples/dump_on_cd/README

   1                     Experimental dump to CDROMs
   2                     ===========================
   3
   4 Starting with dump/restore version 0.4b24 or later versions of
   5 dump/restore you can dump to CDROMs.
   6
   7 You need a (successfully installed) CD-writing software like
   8   cdrecord (tested with versions 1.11a04 onwards)
   9
  10 These scripts use the new switch ('V') to restore
  11 which signals a multi-volume (non-tape) medium like CDROMs
  12
  13 I have used the shell scripts below to generate/verify the dump
  14
  15 YOU MUST MODIFY these - especially
  16
  17 - adapt FS to the filesystem to be dumped
  18 - UserExit to the path to the user exit function like UserInfo below
  19 - FiFo     to the path to a named pipe (better not on the same filesystem)
  20 - your cd device(s)  ( I have /dev/cdrom a symlink to /dev/sr0 and
  21                               /dev/cdrw  a symlink to /dev/sr1 )
  22 - your path to cdrecord and
  23 - - cdrecord's dev parameter must be adapted to your CD burner
  24 - - cdrecord's fs (= input fifo size), use less than 64m if you
  25     are short of memory
  26 - - cdrecord's speed parameter : this parameter not only depends on the
  27     capabilities of your CD burner BUT also on the speed of your CPU !!!
  28     With the dump -z6 compression on a 900 MHz Pentium III I had no problems
  29     with speed=4 which is the maximum speed for my burner.
  30     It looks as if at least speed=6 would be possible on a 900 MHz Pentium III.
  31     If speed is to large, cdrecord's input fifo gets empty (as
  32     shown by cdrecord) and then you have a buffer underrun.
  33
  34 - replace the wayplay command with something which alerts you if you
  35   have to change CDROMS
  36
  37 - for restore or verification  replace /dev/cdrom by something
  38   which applies for you (device for the CDreader)
  39
  40
  41 DON'T FORGET  to generate a boot-CD which has the 0.4b24 restore
  42   or a newer version of restore on board
  43
  44 I prefer timos_Rescue_Cd_Set-0.6.1  see  http://rescuecd.sourceforge.net
  45
  46
  47 Please Cc bug-reports to  jarausch@igpm.rwth-aachen.de
  48
  49 -----------------------------------------------------------------
  50 This file and the scripts were slightly edited when the
  51 Helmut Jarausch patch was integrated in dump-0.4b24.
  52                                                 Stelian.
  53