Some more testing Things seem to (partially) work on some harware. I have tested with a detachable usb dvd writer, with some positive result (see the following). However things are completely broken with some other hardware (again see the following).
PARTIAL success story With a usb LG dvd writer, things work, but with tons of quirks with DVD-RW media Instructions from the udftools package say 1) format the media dvd+rw-format -force /dev/sr0 OK 2) grow an empty session growisofs -Z /dev/sr0=/dev/zero NOT OK you need to stop growisofs before end, otherwise it overburns the medium and errors out. 3) Format the packet device in UDF format. mkudffs --utf8 --spartable=2 --media-type=dvdrw /dev/pktcdvd/0 Assuming that you have set up the packet writing device with pktsetup 0 /dev/sr0 or via the config file of udftools NOT OK you need to use /dev/pktcdvd/pktcdvd0 for this to succeed. Similarly, if you had done pktsetup pktdisk /dev/sr0, you would need to use /dev/pktcdvd/pktcdvd0 and not /dev/pktcdvd/pktdisk as expected. This seems to me as a significant bug. However it is not clear to me what difference should exist between the named packet device and /dev/pktcdvd/pktcdvd0 FULL FAILURE HISTORY With an LG DVD RAM GH22NP20, nothing works at all. You just get tons of end_request: I/O error, dev sr0, sector 13721801512 [11336.826259] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [11336.826266] sr 0:0:0:0: [sr0] Sense Key : Illegal Request [current] [11336.826274] sr 0:0:0:0: [sr0] Add. Sense: Illegal mode for this track [11336.826283] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 0c 78 84 ca 00 00 01 00 [11336.826298] end_request: I/O error, dev sr0, sector 13721801512 or pktcdvd: detected zero packet size! in the kernel messages. Please propagate upstream. -- kernel trace and misbehaviour when mapping pktcdvd devices https://bugs.launchpad.net/bugs/526774 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
