> Greetings!
>
> I am using cdbkup to (what else?) backup my system on CD. It
I'm not familiar with cdbkup. Is it doen in Perl?
Perhaps a link to info about it would be helpful.
> is quite the
> reliable program, and I was very surprised to find it had a nasty bug.
>
> In short, whenever I tried to perform a backup that didn't
> fit on one CD, the
> program would create ISO images that were consistently too
> large for my CDs.
>
> I dug around and found the problem, but have no clue as to
> the cause. In the
> section that gathers the data to be backed up, the program
> invokes gtar as
> such:
>
> open (INPUT, "(cd / && /bin/gtar -f - -cSlz
> --listed-incremental=/tmp/cdbkup-root --label=root-2003-11-30-0
> --exclude=./home/backup --exclude=./root/root-2003-11-30-0.tar.gz
> --exclude=./tmp/cdbkup-root .)|");
>
It actually has the date two days ago hardcoded in it? That seems odd,
is somethgin else going on there?
And what id my gtar is in /usr/bin or soemthing? Sum ting wong.
> Later, the application reads from the pipe as such:
>
> $imgsize = 0;
> open( TMPIMG, ">$tmpimg") || die "Can't open '$tmpimg': $!\n";
> while( $rc = read( INPUT, $data, $increment)) {
> $imgsize += $rc;
> print TMPIMG $data || die "Can't write data
> to tmp file:
> $!\n";
> last if( netsize($imgsize + $increment) > $maxsize);
> }
>
> Now, the $imgsize variable is consistently smaller than the
> real file size as
> reported by ls.
>
> I checked as many FAQs as I could, and found a reference to
> 'use bytes' vs 'no
> bytes'. I tried both, and it made no difference.
Seems like an apples to oranges comparison that can happen
when comparing bit, bytes and sixe values form different program
and functions.
What is netszie();
I guess more info would be helpful, perhaos a link to/about this script?
Thanks
Dmuey
>
> I am sure this is something trivial, but really need help.
>
> Thanks
> Marco
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