dvd+rw problems

[Nick Pegg]

On 5/26/06, Mikhail Goriachev <mikhailg at webanoide.org> wrote:
> Nick Pegg wrote:
> > On 5/26/06, Nick Pegg <nick.pegg at gmail.com> wrote:
> >> I'm having some troubles reading and writing DVD+RW discs. I've
> >> installed dvd+rw-tools and followed the instructions in the FreeBSD
> >> Handbook and searched Google without much luck. Here's the specific
> >> errors I'm getting:
> >>
> >> Trying to mount the disc:
> >> server# mount_cd9660 /dev/cd0 /cdrom
> >> mount_cd9660: /dev/cd0: Invalid argument
> >>
> >> Trying to burn stuff to the disc:
> >> server# growisofs -Z /dev/cd0 -J -R /root/dumps
> >> :-( unable to cam_open_pass("/dev/pass0",O_RDWR): Operation not permitted
> >>
> >>
> >> When trying the same operations with a DVD-R disc, I can successfully
> >> mount and read the disc, however I get the same error when trying to
> >> write to the disc. The drive can also mount and read CD media just
> >> fine. I've double-checked the permissions in /dev and I'm running
> >> everything as root, so that shouldn't be a problem.
> >>
> >> Here's some additional info to help in figuring out what my problem
> >> could be:
> >>
> >> server# camcontrol devlist
> >> <TDK DVDRW0404N 1.0A>              at scbus1 target 1 lun 0 (cd0,pass0)
> >>
> >> Here's some relevant stuff from dmesg:
> >> acd0: CDR <CD-ROM! Erive/G6E ! ! ! ! ! ! ! ! ! ! !/M1/31 !> at
> >> ata1-master UDMA33
> >> acd1: DVDR <TDK DVDRW0404N/1.0A> at ata1-slave UDMA33
> >> (probe0:ata1:0:0:0): INQUIRY. CDB: 12 0 0 0 24 0
> >> (probe0:ata1:0:0:0): CAM Status: SCSI Status Error
> >> (probe0:ata1:0:0:0): SCSI Status: Check Condition
> >> (probe0:ata1:0:0:0): ILLEGAL REQUEST info?:1000100 csi:0,1,0,1 asc:24,1
> >> (probe0:ata1:0:0:0): Reserved ASC/ASCQ pair
> >> (probe0:ata1:0:0:0): Unretryable error
> >> cd0 at ata1 bus 0 target 1 lun 0
> >> cd0: <TDK DVDRW0404N 1.0A> Removable CD-ROM SCSI-0 device
> >> cd0: 33.000MB/s transfers
> >> cd0: Attempt to query device size failed: NOT READY, Medium not present
> >> g_vfs_done():acd0[READ(offset=65536, length=8192)]error = 5
> >> g_vfs_done():acd0[READ(offset=32768, length=2048)]error = 5
> >> g_vfs_done():cd0[READ(offset=65536, length=8192)]error = 5
> >> (cd0:ata1:0:1:0): READ TOC/PMA/ATIP {MMC Proposed}. CDB: 43 0 0 0 0 0
> >> 0 0 4 0
> >> (cd0:ata1:0:1:0): CAM Status: SCSI Status Error
> >> (cd0:ata1:0:1:0): SCSI Status: Check Condition
> >> (cd0:ata1:0:1:0): ILLEGAL REQUEST asc:24,0
> >> (cd0:ata1:0:1:0): Invalid field in CDB: Command byte 6 is invalid
> >> (cd0:ata1:0:1:0): Unretryable error
> >> g_vfs_done():cd0[READ(offset=32768, length=2048)]error = 5
> >>
> >>
> >> Thanks for the help!
> >>
> >> -Nick
> >>
> >
> > I've got an update to my problem. I can actually read the disc just
> > fine at securelevel 3, but I need to drop down to securelevel 1 in
> > order to write to it (/dev/pass0 is a protected device node at
> > securelevel 2 and 3).
> >
> > Is there a workaround to this, or will I have to drop into single-user
> > mode every time I want to write to a DVD?
>
>
> Hi,
>
> I ran into the same problem years ago. This might help you:
>
> http://www.freebsd.org/gnome/docs/faq2.html#q15
>
> Cheers,
> Mikhail.
>

Looks like that wasn't much help, since the FAQ talks about changing
the permissions on the devices. I've done the instructions and only
/dev/xpt0 was effected since /dev/cd0 and /dev/pass0 being protected
by securelevel 2 and above. Even if I start up in securelevel 1,
change the permissions, then go to securelevel 3, I still get the
"Operation not permitted" error when trying to use growisofs.


-Nick