[Bug 162683] DVD-RAM writing error

[spiekey]

Public bug reported:

Binary package hint: linux-image-2.6.15-29-server

Hello experts,

i am not sure if this is a Kernel issue, but we are having massive problems with writing to DVDRAM. Our DVD-Drive even becomes unuseable or disapears after a reboot.
In fact, we have already used 2 diffrent DVD-Writer (both LG GSA-4166B) and a few DVD-RAM Disks.

Let's start what we have so far:
- Ubuntu 6.06 LTS
- DVD-Device: LG GSA-4166B Build Oct2005
- DVD-Media: DVD-RAM from Verbatim, 3x certified, 4,7GB
- Kernel 2.6.15-29-server 

I formatted the DVD-RAM with the command:
mkudffs --spartable=2 --media-type=dvdram /dev/hdc

All we really do is to mount the drive to /tmp/mnt and write/read/delte files with rsync, rm, ls.
dmesg:
-----------------------THIS IS DVD RAM No1----------------------------------------------------------------------------------
[42949778.160000] hdc: command error: status=0x51 { DriveReady SeekComplete Error }
[42949778.160000] hdc: command error: error=0x50 { LastFailedSense=0x05 }
[42949778.160000] ide: failed opcode was: unknown
[42949778.160000] end_request: I/O error, dev hdc, sector 1248
[42949780.820000] UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'LinuxUDF', timestamp 2007/11/13 11:12 (103c)
[42950006.210000] hdc: command error: status=0x51 { DriveReady SeekComplete Error }
[42950006.210000] hdc: command error: error=0x50 { LastFailedSense=0x05 }
[42950006.210000] ide: failed opcode was: unknown
[42950006.210000] end_request: I/O error, dev hdc, sector 1248
... and so on.

dmesg:
-----------------------THIS IS DVD RAM No2----------------------------------------------------------------------------------
[42952400.190000] UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'LinuxUDF', timestamp 2007/11/14 14:42 (103c)
[42952520.960000] UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'LinuxUDF', timestamp 2007/11/14 14:42 (103c)
[42952553.180000] hdc: command error: status=0x51 { DriveReady SeekComplete Error }
[42952553.180000] hdc: command error: error=0x50 { LastFailedSense=0x05 }
[42952553.180000] ide: failed opcode was: unknown
[42952553.180000] end_request: I/O error, dev hdc, sector 1248
... and so on.

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Undecided
         Status: New

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DVD-RAM writing error
https://bugs.launchpad.net/bugs/162683
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