[Stgt-devel] How to setup a DVD RW

[Albert Pauw]

Just found the problem, which is quite mundane.

udev creates automatically the device for the cdrom, in my case /dev/sr1,
with ownership root:disk. The attributes are rw-rw----, which means
as a normal user I can't write to it, K3B run as the normal user can't 
either.
The test with dvdrecord was done as root and succeeded.
When I changed /dev/sr1 to rw-rw-rw, it worked in K3B as well.

Albert

-------- Original Message --------

Finally can confirm that the dvdrecord command works.

What I did wrong was NOT using a file with length zero to start with as 
the backend,
so it was seen as a readonly CD/DVD, forgot that READMEs are there to 
read ;-) because
it can be found in README.mmc

K3B and nautilus (the Fedora desktop, rightclick  "Open CD/DVD Creator) 
don't work. They both keep asking to insert a blank CD/DVD.
As said the dvdrecord command works like a charm, so it is mostly working.

Albert

> Can you try using dvdwriter like this :
>
> dvdrecord -dao -ignsize -overburn dev=/dev/sgX ./IMAGE.iso
>
> and just verify that that works.
>
> If that works it is most likely that there is something missing in the
> emulation of DVD+R that
> K2B needs to be happy.



On Mon, Jun 30, 2008 at 3:25 AM, Albert Pauw <albert.pauw at gmail.com> wrote:
> > Using open-iscsi to log into tgtd, which has the following setup for a
> > DVD-R:
> >
> > tgtadm --lld iscsi --mode target --op new --tid 1 -T
> > iqn.2007-03:virtual-dvd:`hostname`
> > tgtadm --lld iscsi --mode logicalunit --op update --tid 1 --lun 0 
--name
> > scsi_id --value "CONTROLLER"
> > tgtadm --lld iscsi --mode logicalunit --op update --tid 1 --lun 0 
--name
> > scsi_sn --value "001"
> >
> > # Create a DVD drive and give it a nice name
> > # The dvd starts out without a backing store file, i.e. no disk loaded
> > tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1
> > --backing-store /root/empty.iso --device-type cd
> > tgtadm --lld iscsi --mode logicalunit --op update --tid 1 --lun 1 
--params
> > removable=1
> >
> > Where /root/empty.iso is an empty 4GB file. I can succesfully log 
into the
> > this target, dmesg shows:
> >
> > scsi 13:0:0:0: RAID              IET      Controller       0001 PQ: 
0 ANSI:
> > 5
> > scsi 13:0:0:0: Attached scsi generic sg2 type 12
> > scsi 13:0:0:1: CD-ROM            IET      VIRTUAL-CDROM    0001 PQ: 
0 ANSI:
> > 5
> > sr1: scsi-1 drive
> > sr 13:0:0:1: Attached scsi CD-ROM sr1
> >
> > However, K3B (CD burner program) sees the virtual CDROM (as it is 
called by
> > default), but doesn't see
> > that a medium is loaded (while I had given it a backing store).
> >
> > What I am doing wrong here?
> >
> > Thanks,
> >
> > Albert
> >
> > P.S. I am using Fedora 9.
> >
> >
> >
> > _______________________________________________
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> > Stgt-devel at lists.berlios.de
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> >
> >