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The Thursday 2007-05-10 at 16:34 +0100, David Bolt wrote:
> >and it is the version I compiled, too. Curious!
>
> Very interesting.
>
> ># change according to you need
> >PAR=par2
> >
> >
> >I did not touch that, it is dated "2006-11-25". Funny that SuSE contains a
> >script calling a program they do not supply.
>
> That's in the documentation, which means it's supplied by the original
> authors/packagers, not by SUSE.
True enough, but it's refered to in the main man page.
> >Maybe I'll bug the bugzilla
> >chaps a bit ;-)
>
> Maybe bug them to include par2. The sources are the same as from
> sourceforge, except for repackaging them as a .tar.bz2, and there's the
> patch for it to compile using GCC4.
Yes... I might do, next time I fire it up. I have to be in the correct
mood O:-)
> >(The par calling code is:
> >
> >exec $PAR c -r$6 -n1 "$1/$2.$3.$4"
> >
> >with the positional parameters being:
> >
> ><path> <basename> <slice number> <extension> <context(not used)>
> ><redundancy ratio (%)>
>
> Which explains why par2 can do the same job as par. That dar script
> doesn't use any of the features that aren't common to both par and par2.
Ah! I didn't check.
However, the dar people claim that par is used transparently, but I think
it is far from being transparent, specially if you backup to dvd: first we
have to copy (maybe with dd_rescue) the files to disk, then repair. It can
not retrieve and correct on the fly because the media is not writeable.
And the, lets say, recovery data (par files) are not included inside the
backup stream.
I still miss what the old pcbackup (from central point software) program
could do under dos twenty years ago: I have backups from that time made in
80 floppies, and it is capable of correcting the errors really on the fly,
after this many years.
- --
Cheers,
Carlos E. R.
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