Phillip Susi wrote:

If you check your dmesg you will see udffs complain that the device is not writable, and that it is falling back to read only mode. This may be because your drive is not standards compliant, and will not accept single sector writes. Using the pktcdvd driver might be able to work around that problem. Install the udftools package and use pktsetup to bind /dev/pktcdvd/0 to /dev/scd0 and then try to mount /dev/pktcdvd/0.

Thanks very much. I'll try this this evening and get back to the list with any success or failure. --Michel

Michel Vaillancourt wrote:

ext1:~# dmesg | grep -i dvd hdc: HL-DT-ST DVDRAM GSA-4163B, ATAPI CD/DVD-ROM drive Vendor: HL-DT-ST Model: DVDRAM GSA-4163B Rev: A103 sr0: scsi3-mmc drive: 62x/62x writer dvd-ram cd/rw xa/form2 cdda tray

... I'm using IDE-SCSI to access the drive, since I was given to understand that it works best that way for UDF or Packet access.

Oh no don't use ide-scsi you don't need that in 2.6 to do cd/dvd writing... Use your /dev/hdd device directly -- M

Michel Vaillancourt wrote:

Its a Debian box, and I've had a lot of problems with this machine "liking" the 2.6x kernels...

Hi, everyone! This is a quick email to report back. I had the time to compile a custom 2.6 kernel over the weekend. First try, it worked. So I guess the moral of the story is that even with Debian, its simpler to compile your own kernel and go. Thanks very much to everyone who made suggestions and helped me get to the right/write answer. :) Incidentally, what I am doing is using my DVD+RAM drive as a network backup device. My servers all do TAR/GZ backups each night of key data and the SCP directly onto the mounted DVD+RAM disk. It works like a charm. --Michel

Phillip Susi wrote:

Michel Vaillancourt wrote:

...

ext1:~# pktsetup /dev/pktcdvd0 /dev/scd0 open packet device: No such device or address

It appears that you don't have the packet device driver loaded. Make sure you have the module built, installed, and either configured to auto load, or manually modprobe it and try again.

Ok... That would be the problem. I had thought that the udftools for Debian package included the modules required. I somehow missed the part in the docs where I have to compile a custom kernel to have this work. I'll get a working custom kernel installed on this box and then patch it to include the pktcdvd stuff. I'll post back when I hit the next brick or have some success. Thanks for your help. --Michel

Gustavo Guillermo Pérez wrote:

...

ext1:~# mount /dev/scd0 /media/dvdram/ -t udf -o rw,noatime At this point try to remount again, sometimes I was being forced to do. mount -o remount,rw,noatime /media/dvdram/

Weird, but once I've seen.

Hi, Gustavo! Thanks for the suggestion. It didn't work, unfortunately. I'll post when I have a working solution. -- -- Michel Vaillancourt Wolfstar Systems