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Experimental dump to CDROMs
===========================
Starting with dump/restore version 0.4b24 or later versions of
dump/restore you can dump to CDROMs.
You need a (successfully installed) CD-writing software like
cdrecord (tested with versions 1.11a04 onwards)
These scripts use the new switch ('V') to restore
which signals a multi-volume (non-tape) medium like CDROMs
I have used the shell scripts below to generate/verify the dump
YOU MUST MODIFY these - especially
- adapt FS to the filesystem to be dumped
- UserExit to the path to the user exit function like UserInfo below
- FiFo to the path to a named pipe (better not on the same filesystem)
- your cd device(s) ( I have /dev/cdrom a symlink to /dev/sr0 and
/dev/cdrw a symlink to /dev/sr1 )
- your path to cdrecord and
- - cdrecord's dev parameter must be adapted to your CD burner
- - cdrecord's fs (= input fifo size), use less than 64m if you
are short of memory
- - cdrecord's speed parameter : this parameter not only depends on the
capabilities of your CD burner BUT also on the speed of your CPU !!!
With the dump -z6 compression on a 900 MHz Pentium III I had no problems
with speed=4 which is the maximum speed for my burner.
It looks as if at least speed=6 would be possible on a 900 MHz Pentium III.
If speed is to large, cdrecord's input fifo gets empty (as
shown by cdrecord) and then you have a buffer underrun.
- replace the wayplay command with something which alerts you if you
have to change CDROMS
- for restore or verification replace /dev/cdrom by something
which applies for you (device for the CDreader)
DON'T FORGET to generate a boot-CD which has the 0.4b24 restore
or a newer version of restore on board
I prefer timos_Rescue_Cd_Set-0.6.1 see http://rescuecd.sourceforge.net
Please Cc bug-reports to jarausch@igpm.rwth-aachen.de
-----------------------------------------------------------------
This file and the scripts were slightly edited when the
Helmut Jarausch patch was integrated in dump-0.4b24.
Stelian.
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