Wierd log messags fromdevhdcmediadvdrecorder

var-log-messages reports Mar 12 16:58:15 Avebury kernel: ISO 9660 Extensions: RRIP1991A Mar 12 16:58:38 Avebury last message repeated 2 times Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:41 Avebury kernel: hdc: rw=0, want=8404820, limit=8388604 Mar 12 16:58:41 Avebury kernel: Buffer I-O error on device hdc, logical block 2101204 Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:41 Avebury kernel: hdc: rw=0, want=8404824, limit=8388604 Mar 12 16:58:41 Avebury kernel: Buffer I-O error on device hdc, logical block 2101205 Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:41 Avebury kernel: hdc: rw=0, want=8404828, limit=8388604 Mar 12 16:58:41 Avebury kernel: Buffer I-O error on device hdc, logical block 2101206 Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:41 Avebury kernel: hdc: rw=0, want=8404832, limit=8388604 Mar 12 16:58:41 Avebury kernel: Buffer I-O error on device hdc, logical block 2101207 Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:41 Avebury kernel: hdc: rw=0, want=8404836, limit=8388604 Mar 12 16:58:41 Avebury kernel: Buffer I-O error on device hdc, logical block 2101208 Mar 12 16:58:41 Avebury kernel: attempt to access beyond end of device

... etc with 'want=' and 'logical block' increasing to

Mar 12 16:58:42 Avebury kernel: Buffer I-O error on device hdc, logical block 2251568 plus 1 Mar 12 16:58:42 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:42 Avebury kernel: hdc: rw=0, want=9006284, limit=8388604 Mar 12 16:58:42 Avebury kernel: Buffer I-O error on device hdc, logical block 2251570 Mar 12 16:58:42 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:42 Avebury kernel: hdc: rw=0, want=9005776, limit=8388604 Mar 12 16:58:42 Avebury kernel: Buffer I-O error on device hdc, logical block 2251443 Mar 12 16:58:42 Avebury kernel: attempt to access beyond end of device Mar 12 16:58:42 Avebury kernel: hdc: rw=0, want=9005780, limit=8388604 Mar 12 16:58:42 Avebury kernel: Buffer I-O error on device hdc, logical Mar 12 16:59:13 Avebury kernel: attempt to access beyond end of device Mar 12 16:59:13 Avebury kernel: hdc: rw=0, want=9005776, limit=8388604 Mar 12 16:59:13 Avebury kernel: Buffer I-O error on device hdc, logical block 2251443 Mar 12 16:59:13 Avebury kernel: attempt to access beyond end of device Mar 12 16:59:13 Avebury kernel: hdc: rw=0, want=9005780, limit=8388604 Mar 12 16:59:13 Avebury kernel: Buffer I-O error on device hdc, logical block 2251444 Mar 12 16:59:34 Avebury kernel: attempt to access beyond end of device Mar 12 16:59:34 Avebury kernel: hdc: rw=0, want=9005776, limit=8388604 Mar 12 16:59:34 Avebury kernel: Buffer I-O error on device hdc, logical block 2251443 Mar 12 16:59:34 Avebury kernel: attempt to access beyond end of device Mar 12 16:59:34 Avebury kernel: hdc: rw=0, want=9005780, limit=8388604 Mar 12 16:59:34 Avebury kernel: Buffer I-O error on device hdc, logical block 2251444 Mar 12 16:59:37 Avebury kernel: attempt to access beyond end of device Mar 12 16:59:37 Avebury kernel: hdc: rw=0, want=9005776, limit=8388604 Mar 12 16:59:37 Avebury kernel: Buffer I-O error on device hdc, logical block 2251443

and it carries on with the same 2 sets of figures

want=9005780, limit=8388604 ... logical block 2251444 want=9005776, limit=8388604 ... logical block 2251443

1000s of times per second e.g.

grep '16:59:37'var-log-messages wc -l 2548

and so on for hours - it seems to have stopped recently (maybe when I finally managed to umount the drive).

The start times probably correspond to when I put a DVD-R into the drive and found that I couldn't read some of the files on the disc even though they were listed in the directory. I've had this problem before: it looks as if the disc is corrupt but when the system feels like it1 it can read them all.

However since trying the read the DVD I've been successfully using the drive to rip CDs.

Wierd.

1 yes I know: Things don't like being anthropormorphised :-)