Write a tar file ddirectly to dvd

[chindi]

hii guys,

i want to write a file say of 8 gb from my server directly to a dvd ..

How can i do it ???
i mean can i just mount a blank dvd and den write my contents in this dvd......

[Hakki Aydin Ucar]

I never used this in HP-UX but, I want to remember 8GB a bit too much for normal DVD , but you need either double layer DVD and supported driver OR a program to split data as two parts on DVDs.

[chindi]

Hi Hakki,

Say the file is of 5 gb ..
can u tell methe steps as to how to do it ????

[Hakki Aydin Ucar]

AS far as I know , I am going to share with you, try it;

First mount dvd with empty media inside :
# mount -F cdfs -o cdcase /dev/dsk/c3t2d0 /dvddrom

(dvdrom directory must be exist if not mkdir /dvddrom)

then make ioscan to find device name of DVD;
# ioscan -fnCdisk
(note that dvd writer)

then tar copy;
# tar â xvf /dev/rdsk/cxtyd0

[Ralph Grothe]

Hi chindi,

if you say "directly" then I would assume that you meant directly, and that there was no real need to first create say an ISO image that you then burn on the dvd (viz. mastering).

I have to admit however that I never burned DVDs under HP-UX. But I would think that the deviations from Linux aren't that big in that respect.
I have written a few raw tar dumps onto an unmounted CD under Linux some years ago and that worked well.
So why shouldn't it work under HP-UX as well?

Provided the buffer is chosen big enough (though modern drives seem to have buffer underrun features) one could directly pipe into cdrom like so:

# cd /tree/to/dump && tar cf - . | gzip -c | cdrecord dev=1,0,0 fs=4m speed=4 -

The syntax for growisofs or other burning/mastering programs of course may vary (consult their manpage).

To read from such a dump you would insert the disk in the drive (say /dev/cdrom) without mounting it (which wasn't possible anyway) and then issue something like

# cd /tree/to/where/extract && gzip -dc < /dev/cdrom | tar xf -

[V. Nyga]

Hi,

this is the HP-UX tool:
https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXDVDWRITE

This product is available for HP-UX 11i v1 (B.11.11) and 11i v2 (B.11.23) using HP DVD+RW drives only.

And - DVD max. is still 4,7 GB (also with HP-UX ;-) )

HTH
V.

[Steven Schweda]

> And - DVD max. is still 4,7 GB [...]

Roughly 8GB with "DL".

http://en.wikipedia.org/wiki/DVD%2BR_DL

[Bill Hassell]

From the download page:

June 2005: The download has been updated to include a copy of a newer mkisofs which supports larger than 2GB images, but less than 4GB.

Also, it appears that only HP branded DVD writers are supported and they are not dual layer capable.

[Steven Schweda]

> June 2005: [...] a newer mkisofs [...]

I know nothing, but the latest mkisofs is
somewhat newer than June 2005.

http://cdrecord.berlios.de/private/cdrecord.html

And this whole "directly to a dvd" scheme
didn't seem to involve mkisofs. (Or did I
miss something?)

> [...] | cdrecord [...]

It did seem to involve cdrecord, however, and
so, if I were trying to write a DL disc, I'd
probably try to use a version of cdrecord
which is new enough to know what "DL" means.
I wouldn't want to bet on it, but I believe
that I used one of the earlier beta versions
of cdrecord to write a DL disc on one of my
VMS systems, so, if the current released
version can be built on HP-UX, then I'd say
that it has some chance of working there,
too (given an appropriate drive, of course).

> [...] are supported [...]

As always, "are supported" and "work" are
spelled differently for a reason.


> [...] my server [...]

Not a well known quantity.