Re: how to use growisofs to merge (-M) on the fly ?

[scdbackup@gmx.net]

Hi,

> mkfifo /tmp/pipe.dd.gz
> dd -if /dev/disk | gzip -9 > /tmp/pipe.dd.gz &
> growisofs -M -J -R /dev/dvd /tmp/pipe.dd.gz

I believe it will be very difficult to do this.

/tmp/pipe.dd.gz is used by growisofs as a pathspec 
for mkisofs which reads its file attributes. Especially
the size of the data content is of interest.
But the FIFO will not be able to tell that size 
- even if you could talk mkisofs into reading the
FIFO as a regular file.

I am aware of only one way to make mkisofs accept
a sequential stream as source of data content.
That is option  -stream-media-size  which according
to man mkisofs may not be used together with
"multi-session or hybrid filesystem options."
I understand that ban includes option -M .


Have a nice day :)

Thomas