Writing to Pana DVD-RAM

Writing to Pana DVD-RAM

[cacook]

Hello,

I am running RedHat Wolverine (beta) with kernel 2.4.2.  I have a SCSI subsystem (AHA2740) with a Panasonic LF-D101 DVDRAM on it.

I read that the CDROM driver is built to recognize DVDRAMs and allow writes; well I can mount and read the UDF file system fine, but am not allowed writes.  I have UDF2.0 on the disk, because it didn't recognize UDF2.1.

Also, when I  make xconfig,  it includes UDF support, but read-only. (Write-Experimental is grayed-out)

In fstab: /dev/scd1 is mounted to /mnt/dvdram  udf  default 0 0. (paraphrasing)

I need the DVDRAM for backups and file transfers.  Is the problem the driver, the UDF filesystem, my setup, or what?
--
C.

The best way out is always through.
      - Robert Frost  A Servant to Servants, 1914

Re: Writing to Pana DVD-RAM

[Jeremy Jackson]

cacook@freedom.net wrote:

> Hello,
>
> I am running RedHat Wolverine (beta) with kernel 2.4.2.  I have a SCSI subsystem (AHA2740) with a Panasonic LF-D101 DVDRAM on it.
>
> I read that the CDROM driver is built to recognize DVDRAMs and allow writes; well I can mount and read the UDF file system fine, but am not allowed writes.  I have UDF2.0 on the disk, because it didn't recognize UDF2.1.
>
> Also, when I  make xconfig,  it includes UDF support, but read-only. (Write-Experimental is grayed-out)
>
> In fstab: /dev/scd1 is mounted to /mnt/dvdram  udf  default 0 0. (paraphrasing)
>
> I need the DVDRAM for backups and file transfers.  Is the problem the driver, the UDF filesystem, my setup, or what?
> --
> C.
>
> The best way out is always through.
>       - Robert Frost  A Servant to Servants, 1914
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

Check that "Experimental " is enabled under "Code Maturity level options",
if you can't find it try using "make menuconfig" instead of "make xconfig"
Note that the UDF-write support option is listed as "Dangerous"... possibly
making things difficult, but then again if you have a DVD-RAM,
how bad can things be :)

Cheers,

Jeremy

Re: Writing to Pana DVD-RAM

[cacook]

DOH!  You're right.

I can now write to it, but only get one chance.  Copy a file to DVDRAM, read, print, etc, but when I try to rm or mv, segfault.  Foreverafter the DVDRAM is 'busy'.  Cannot umount.  Must reboot then umount.  Remount, get another write, but on subsequent write, segfault.

I am using UDF2. (UDF2.1 won't mount)  Would I be better off with UDF1.2, or FAT32?  How can I get details of the driver's capabilities?
--
C.

The best way out is always through.
      - Robert Frost  A Servant to Servants, 1914



Jeremy Jackson wrote:

> cacook@freedom.net wrote:
>
> > Hello,
> >
> > I am running RedHat Wolverine (beta) with kernel 2.4.2.  I have a SCSI subsystem (AHA2740) with a Panasonic LF-D101 DVDRAM on it.
> >
> > I read that the CDROM driver is built to recognize DVDRAMs and allow writes; well I can mount and read the UDF file system fine, but am not allowed writes.  I have UDF2.0 on the disk, because it didn't recognize UDF2.1.
> >
> > Also, when I  make xconfig,  it includes UDF support, but read-only. (Write-Experimental is grayed-out)
> >
> > In fstab: /dev/scd1 is mounted to /mnt/dvdram  udf  default 0 0. (paraphrasing)
> >
> > I need the DVDRAM for backups and file transfers.  Is the problem the driver, the UDF filesystem, my setup, or what?
> > --
> > C.
> >
> > The best way out is always through.
> >       - Robert Frost  A Servant to Servants, 1914
> >
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
>
> Check that "Experimental " is enabled under "Code Maturity level options",
> if you can't find it try using "make menuconfig" instead of "make xconfig"
> Note that the UDF-write support option is listed as "Dangerous"... possibly
> making things difficult, but then again if you have a DVD-RAM,
> how bad can things be :)
>
> Cheers,
>
> Jeremy

Re: Writing to Pana DVD-RAM

[Jens Axboe]

On Sun, Apr 15 2001, cacook@freedom.net wrote:
> DOH!  You're right.
> 
> I can now write to it, but only get one chance.  Copy a file to
> DVDRAM, read, print, etc, but when I try to rm or mv, segfault.
> Foreverafter the DVDRAM is 'busy'.  Cannot umount.  Must reboot then
> umount.  Remount, get another write, but on subsequent write,
> segfault.

Please decode that oops and send it along, see REPORTING-BUGS

-- 
Jens Axboe

Re: Problem: Writing to Pana DVD-RAM

[Jens Axboe]

On Mon, Apr 16 2001, cacook@freedom.net wrote:

please, no html mails -- unreadable and impossible to reply to. it looks
like a udf bug most likely, you may want to try the latest and greatest
from

http://sourceforge.net/projects/linux-udf/

instead of using the kernel supplied version.

-- 
Jens Axboe