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Re: dd: error reading '/dev/sr0': Input/output error




On Monday 10 December 2018 12:57:46 md wrote:

> In the scenarios when dd fails, the amount that dd reads before
> failing varies from to movie dvd to movie dvd. At times dd will read
> 400MB before failing.
>
> A few FWIW snippets:
> dvdbackup 'fixes' the dd problem
> xorriso doesn't 'fix' the dd problem
> xorriso has similar problem to dd
> dvdbackup 'fixes' the xorriso problem as well
> I haven't spent the time to let dvdbackup or xorriso complete.
>
> =====
>
> When I insert a non-movie dvd (eg a debian install disc I burned)
> dmesg -w doesn't report anything.
>
> When I insert a movie dvd, dmesg -w reports:
>
> [] sr 4:0:0:0: [sr0] tag#20 FAILED Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE [] sr 4:0:0:0: [sr0] tag#20 Sense Key :
> Illegal Request [current] [] sr 4:0:0:0: [sr0] tag#20 Add. Sense: Read
> of scrambled sector without authentication [] sr 4:0:0:0: [sr0] tag#20
> CDB: Read(10) 28 00 00 3b 23 c0 00 00 40 00 [] blk_update_request: I/O
> error, dev sr0, sector 15503104
> [] sr 4:0:0:0: [sr0] tag#28 FAILED Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE [] sr 4:0:0:0: [sr0] tag#28 Sense Key :
> Illegal Request [current] [] sr 4:0:0:0: [sr0] tag#28 Add. Sense: Read
> of scrambled sector without authentication [] sr 4:0:0:0: [sr0] tag#28
> CDB: Read(10) 28 00 00 3b 23 ce 00 00 02 00 [] blk_update_request: I/O
> error, dev sr0, sector 15503160
> [] Buffer I/O error on dev sr0, logical block 1937895, async page read
>
> Is that normal?
>
> Details in the dmesg report vary from movie dvd to movie dvd, but
> remain the same for a given movie dvd upon subsequent cycles of
> eject/insert.
>
> =====
> Versions:
>
> dd (coreutils) 8.26
> xorriso 1.4.6
> dvdbackup 0.4.2
>
> =====
> After inserting a movie dvd, dmesg -w makes no no additional
> reporting for:
>
> 1) dvdbackup -M
>    then Ctrl-C
>
> nor
>
> 2) xorriso -outdev /dev/sr0 -check_media use=outdev
> data_to=/sdb1/movie.udf then Ctrl-C
>
> nor
>
> 3) dvdbackup -M
>    then (Ctrl-C)
>    then /bin/dd if=/dev/sr0 of=/sdb1/movie.iso
>
> In particular, in (3), dd finishes without causing additional dmesg
> reporting. Also, subsequent reissues of the dd command doesn't cause
> additional dmesg reporting..
>
> FWIW, I haven't spent the time to let dvdbackup or xorriso complete.
>
> However, after inserting a movie dvd, running ...
>
> 4) /bin/dd if=/dev/sr0 of=/sdb1/movie.iso
>
> or
>
> 5) xorriso command
>    then Ctrl-C
>    then dd if=/dev/sr0 of=/sdb1/movie.iso
>
> ... causes the following dmesg output:
>
> [] sr 4:0:0:0: [sr0] tag#4 FAILED Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE [] sr 4:0:0:0: [sr0] tag#4 Sense Key : Illegal
> Request [current] [] sr 4:0:0:0: [sr0] tag#4 Add. Sense: Read of
> scrambled sector without authentication [] sr 4:0:0:0: [sr0] tag#4
> CDB: Read(10) 28 00 00 00 04 b8 00 00 40 00 [] blk_update_request: I/O
> error, dev sr0, sector 4832
> [] sr 4:0:0:0: [sr0] tag#7 FAILED Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE [] sr 4:0:0:0: [sr0] tag#7 Sense Key : Illegal
> Request [current] [] sr 4:0:0:0: [sr0] tag#7 Add. Sense: Read of
> scrambled sector without authentication [] sr 4:0:0:0: [sr0] tag#7
> CDB: Read(10) 28 00 00 00 04 b8 00 00 02 00 [] blk_update_request: I/O
> error, dev sr0, sector 4832
> [] Buffer I/O error on dev sr0, logical block 604, async page read
>
> In this scenario, subsequent reruns of the dd command cause dmesg to
> reissue the same report.  Also, following this scenario, dmesg -w does
> not issue additional reporting when running ...
>
> dvdbackup -M, then Ctrl-C, /bin/dd if=/dev/sr0 of=/sdb1/movie.iso
>
> =====
> xorriso behaves similarly to dd. it succeeds only if dvdbackup -M is
> run first. Here is the output when running it without dvdbackup -M ...
>
> MD> xorriso -outdev /dev/sr0 -check_media use=outdev
> data_to=/sdb1/movie.udf xorriso 1.4.6 : RockRidge filesystem
> manipulator, libburnia project.
>
> xorriso : NOTE : Disc status unsuitable for writing
> Drive current: -outdev '/dev/sr0'
> Media current: DVD-ROM
> Media status : is written , is closed
> Media summary: 1 session, 3871183 data blocks, 7561m data,     0 free
> xorriso : UPDATE : 32 blocks read in 3 seconds , 0.0xD
> libburn : SORRY : SCSI error on read_10(1216,32): See MMC specs: Sense
> Key 5 "Illegal request", ASC 6F ASCQ 03. libburn : SORRY : SCSI error
> on read_10(1248,32): See MMC specs: Sense Key 5 "Illegal request", ASC
> 6F ASCQ 03.

Has anyone considered that this is some sort of funny business on the 
part of the movie publisher so as to constitute a copy prevention 
scheme?  Not being a movie fan, I now play the movies I do own on an 
Apex player with Aussie reflashed firmware, which has no region 
recognition by Aussie law. I've never tried but having had a computer 
drive bricked by sony music cd's back in the day, has to be considered. 
I solved that by feeding my sony cd's to the trash fire and have never 
purchased another sony music cd. I lost a drive, but sony has lost much 
more than the cost of the drive in sales made to me.


-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>