[Cdrdao-devel] L-EC errors ignored, but slow

[Paul D. <pau...@ve...>]

Greetings,

My apologies if this request for assistance violates list rules.

I am trying to make an accurate copy of a data CD.  My solution to this
error:
...
Cannot read CD-TEXT data - maybe not supported by drive.

was to use the --read-raw option.  As expected, L-EC errors are ignored
with this option, but each error seems to stall the the CD drive, causing
the CD-ROM to spin down (but, not to a complete stop).

As these errors are periodic and frequent, the CD-ROM never gets going,
and the process of copying the original to local .bin file is very slow.
I received approx.  200MB in over 30min.  A "L-EC error" messages succeeds
each disk slow down, about one every 2 seconds.  (See below for two
attempts.)  I have experienced this reading from both original media and
CD-R burned media.  I assume L-EC errors have to do with the CD-R drive
and driver, not real format or physical errors on the media.

Question: should L-EC errors stall the CD-ROM drive during a read?  Is
this just happening to me?

System Info --
CD-R Drive: Ricoh IDE CD-R/RW RW7080A Rev: 1.3
[pdestefa@mouse cdrdao-1.1.5]$ uname -a
Linux mouse 2.4.3-20mdksmp #1 SMP Sun Apr 15 22:32:27 CEST 2001 i686
unknown


Thank you for you help,

Paul DeStefano


[root@mouse cdrdao-1.1.5.bin.x86.linux]# ./cdrdao read-cd --read-raw
--device "0,0,0" --driver generic-mmc --datafile /tmp/tu.bin /tmp/ut.toc
Cdrdao version 1.1.5 - (C) Andreas Mueller <an...@da...>
  SCSI interface library - (C) Joerg Schilling
  L-EC encoding library - (C) Heiko Eissfeldt
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for current driver
tables.

Using libscg version 'schily-0.5'

0,0,0:  CD-R/RW RW7080A Rev: 1.30
Using driver: Generic SCSI-3/MMC - Version 1.2 (options 0x0000)

Reading toc and track data...

Track   Mode    Flags  Start                Length
------------------------------------------------------------
 1      DATA    4      00:00:00(     0)     71:49:35(323210)
Leadout DATA    4      71:49:35(323210)

Copying data track 1 (MODE1_RAW): start 00:00:00, length 71:49:35 to
"/tmp/tu.bin"...
WARNING: Found L-EC error at sector 814 - ignored.
WARNING: Found L-EC error at sector 818 - ignored.
WARNING: Found L-EC error at sector 835 - ignored.
WARNING: Found L-EC error at sector 840 - ignored.
WARNING: Found L-EC error at sector 845 - ignored.
WARNING: Found L-EC error at sector 866 - ignored.
WARNING: Found L-EC error at sector 893 - ignored.

[root@mouse cdrdao-1.1.5.bin.x86.linux]# ./cdrdao read-cd --read-raw
--device "0,0,0" --driver generic-mmc-raw --datafile /tmp/tu.bin
/tmp/ut.toc
Cdrdao version 1.1.5 - (C) Andreas Mueller <an...@da...>
  SCSI interface library - (C) Joerg Schilling
  L-EC encoding library - (C) Heiko Eissfeldt
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for current driver
tables.

Using libscg version 'schily-0.5'

0,0,0:  CD-R/RW RW7080A Rev: 1.30
Using driver: Generic SCSI-3/MMC (raw writing) - Version 2.0 (options
0x0000)

Reading toc and track data...

Track   Mode    Flags  Start                Length
------------------------------------------------------------
 1      DATA    4      00:00:00(     0)     71:49:35(323210)
Leadout DATA    4      71:49:35(323210)

Copying data track 1 (MODE1_RAW): start 00:00:00, length 71:49:35 to
"/tmp/tu.bin"...
WARNING: Found L-EC error at sector 814 - ignored.
WARNING: Found L-EC error at sector 818 - ignored.
WARNING: Found L-EC error at sector 835 - ignored.