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    SubjectRe: 2.6.25-rc1/2 CD/DVD burning broken
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    On Sat, Feb 23, 2008 at 04:47:50PM +0100, Andreas Schwab wrote:
    > Kiyoshi Ueda <k-ueda@ct.jp.nec.com> writes:
    >
    > > Could you try this patch?
    > > I've only done a compile test, so this patch may not work.
    >
    > Unfortunately, that is not enough to get DVD burning working again.
    > This is the error that growisofs is getting:
    >
    > ioctl(6, SG_IO, {'S', SG_DXFER_TO_DEV, cmd[10]=[2a, 00, 00, 00, 03, 10, 00, 00, 10, 00], mx_sb_len=64, iovec_count=0, dxfer_len=32768, timeout=60000, flags=0x3, data[32768]=["\360R\360\314Wt\277\241\36.\347\356L$\201]\210\372_~]I\213\366\253SV\2\372\356\312\257"...], status=02, masked_status=01, sb[0]=[], host_status=0, driver_status=0, resid=32768, duration=0, info=0x1}) = 0
    > write(2, ":-( unable to WRITE@LBA=310h: ", 30) = 30
    >
    > It looks like the sense buffer is not filled in. In a successfully run
    > of growisfs under 2.6.24.2 the sense code is "LONG WRITE IN PROGRESS".
    >
    > I also see that resid always equals dxfer_len even when the transfer was
    > successful, although growisofs does not seem to care. With 2.6.24.2
    > resid is only non-zero when a sense error occurred.

    Hm, strange,

    burning a dvd here with growisofs works just fine. However, my
    strace -v won't dereference the struct pointer passed to the ioctl:

    ...
    open("/dev/dvd", O_RDWR|O_NONBLOCK|O_LARGEFILE) = 5
    ...
    ioctl(5, SG_IO, 0xbf804d14) = 0
    ...
    --
    Regards/Gruß,
    Boris.
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