Re: AW: Backup format to ISO?
On Tuesday 16 November 2004 11:29, Hermes, Stefan wrote:
> Do you know of any program which will accept tar or cpio format as input
> and generates an ISO-9660 image for burning? I have a large box full of
> 4GB 4mm DAT tapes which should go on DVD, and they are in tar or cpio
> format. Currently the only option is to unpack them to disk and then
> create an image and burn it.
>
If I understand the desire correctly here, it is to transfer the data from
one medium to another medium of a different type. I would believe that
with both of these devices it is possible to be read and write directly.
I use the sdd program to directly write tar backups to DVD+RW medium daily
on multiple servers. The process does require a special 2.4.x kernel to
be built with a patch. I would not know about 2.6.x kernel support. I
think the DVD writer also requires "raw" device support. The sdd progam
is required to create an output block size of 32k if I recall from the
write up. The command would be something to the following if the dvd
writer was bound to raw1:
sdd if=/dev/tape of=/dev/raw/raw1 obs=32k
This process will not produce an ISO-9660 image on the DVD+RW. So it will
not be mountable. But it will provide the sequential access structure
that the original medium contained. The produced copy can be read back or
restored just like the original medium using tar, cpio, etc. like the
original tape. Since the capacity of the tape may be slightly less than
that of the DVD+RW medium, the structure size and block counts could
probably be ignored. An error would result at the end of the tape and
terminate the transfer.
I would consider this the fastest and most efficient process to transfer
the data to the new medium. Further information can be found here:
http://fy.chalmers.se/~appro/linux/DVD+RW/
Cheers,
James
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