CD oddities with VIA PATA

CD oddities with VIA PATA

[Ken Moffat]

 I'm testing 2.6.19 on this box, and I thought I might as well try
out the Parallel ATA driver for the CD/DVD writer (VIA) since the
disk is already handled by libata.

 So far, I've found two oddities - 

(i.) cdparanoia (9.8) works for root, but for a user it complains
that the ioctl isn't cooked and refuses to run.  For test purposes,
it runs ok for a user as suid root, but I imagine that increases
the likelihood of unspeakable things happening.  (Fortunately, I
don't have a dachshund)

(ii.) As a user, I burned a small (28MB) CD using dvdrecord from
dvdrtools-0.3.1, and on a different box I can mount it (using
ide-cd) and it seems fine.  On this box I can't mount it -

ken@ac30 ~ $mount /media/cdrom/
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

 The syslog shows

Dec  1 21:17:41 ac30 kernel: attempt to access beyond end of device
Dec  1 21:17:41 ac30 kernel: sr0: rw=0, want=68, limit=4
Dec  1 21:17:41 ac30 kernel: isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16

 The iso is the gparted-livecd-0.3.1-1.iso.

 The problem might be specific to small CDs, I can mount others (41M
of data and more) without difficulty and all of the likely NLS options
are selected as =y in my config.

Ken
-- 
das eine Mal als Tragödie, das andere Mal als Farce

Re: CD oddities with VIA PATA

[Ken Moffat]

On Fri, Dec 01, 2006 at 10:01:34PM +0000, Ken Moffat wrote:
> 
> (i.) cdparanoia (9.8) works for root, but for a user it complains
> that the ioctl isn't cooked and refuses to run.  For test purposes,
> it runs ok for a user as suid root, but I imagine that increases
> the likelihood of unspeakable things happening.  (Fortunately, I
> don't have a dachshund)
> 
 Forgot to mention the lines in the log from cdparanoia, but I think
these frequent messages are expected:

Dec  1 20:35:53 ac30 kernel: sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
Dec  1 20:35:53 ac30 kernel:    program cdparanoia not setting count and/or reply_len properly

 Also forgot the details of the drive, just in case

Dec  1 19:17:14 ac30 kernel: scsi3 : pata_via
Dec  1 19:17:14 ac30 kernel: ata4.00: ATAPI, max UDMA/66
Dec  1 19:17:14 ac30 kernel: Losing some ticks... checking if CPU frequency changed.
Dec  1 19:17:14 ac30 kernel: ata4.00: configured for UDMA/66
Dec  1 19:17:14 ac30 kernel: scsi 3:0:0:0: CD-ROM            LITE-ON DVDRW SHW-1635S  YS0G PQ: 0 ANSI: 5
Dec  1 19:17:14 ac30 kernel: sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray
Dec  1 19:17:14 ac30 kernel: Uniform CD-ROM driver Revision: 3.20
Dec  1 19:17:14 ac30 kernel: sr 3:0:0:0: Attached scsi CD-ROM sr0
Dec  1 19:17:14 ac30 kernel: sr 3:0:0:0: Attached scsi generic sg1 type 5

Ken
-- 
das eine Mal als Tragödie, das andere Mal als Farce

Re: CD oddities with VIA PATA

[Joshua Kwan]

On 12/01/2006 02:42 PM, Ken Moffat wrote:
> On Fri, Dec 01, 2006 at 10:01:34PM +0000, Ken Moffat wrote:
>> (i.) cdparanoia (9.8) works for root, but for a user it complains
>> that the ioctl isn't cooked and refuses to run.  For test purposes,
>> it runs ok for a user as suid root, but I imagine that increases
>> the likelihood of unspeakable things happening.  (Fortunately, I
>> don't have a dachshund)

For the record,
cdparanoia III release 10pre0 (August 29, 2006)

works for me. My particular IDE adapter is:

00:0f.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
(prog-if 8a [Master SecP PriP])

I have not tried older versions (yet). Could you try this and see if
things are still broken?

-- 
Joshua Kwan

Re: CD oddities with VIA PATA

[Ken Moffat]

On Sun, Dec 03, 2006 at 09:03:53PM -0800, Joshua Kwan wrote:
> On 12/01/2006 02:42 PM, Ken Moffat wrote:
> > On Fri, Dec 01, 2006 at 10:01:34PM +0000, Ken Moffat wrote:
> >> (i.) cdparanoia (9.8) works for root, but for a user it complains
> >> that the ioctl isn't cooked and refuses to run.  For test purposes,
> >> it runs ok for a user as suid root, but I imagine that increases
> >> the likelihood of unspeakable things happening.  (Fortunately, I
> >> don't have a dachshund)
> 
> For the record,
> cdparanoia III release 10pre0 (August 29, 2006)
> 
> works for me. My particular IDE adapter is:
> 
> 00:0f.1 IDE interface: VIA Technologies, Inc.
> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
> (prog-if 8a [Master SecP PriP])
> 
> I have not tried older versions (yet). Could you try this and see if
> things are still broken?
> 
> -- 
> Joshua Kwan
> 
 I had tried it, but it turns out my trial used the old installed
libcdda_* libraries.  Now that I've got it using the new versions of
these, it looks as if 10pre0, with the debian patches, works ok for a
normal user (on x86_64 it needs the patch to be able to configure).

 Thanks for the pointer.  FWIW I can no longer replicate the failure
to mount a CD it had burned, will be doing more tests later.

Ken
-- 
das eine Mal als Tragödie, das andere Mal als Farce