[d-kernel] about packet writing in 2.6.x

[d-kernel] about packet writing in 2.6.x

[Konstantin A. Lepikhov]

Hi!

JFYI

----- Forwarded message from Miguel Quir?s Oloz?bal <mquiros@ugr.es> -----

Date: 06 Mar 2004 08:52:45 +0000
From: Miguel Quir?s Oloz?bal <mquiros@ugr.es>
To: packet-writing@suse.com
Subject: Results with kernel-2.63, using /dev/hdb and /dev/scd0
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Hello.

I have recently compiled the 2.6.3 kernel including into it the patch
provided by Peter. The compilation went without any problem.

According to kernel documentation, the use of ide-scsi is not neccesary
(even deprecated) for IDE-CD writting. In fact, I can use cdrecord with
kernel 2.6.3 with dev=/dev/hdb and it works fine.

So, I have tried udf writing linking /dev/pktcdvd0 with /dev/hdb.
After mounting the drive, it seemed to work at the beginning, I even
could write a couple of little files, but after several minutes a lot of
ugly error messages appeared in the screen, something like
  end_request I/O error /dev/hdb sector .... Buffer I/O error

More and more messages and more and more quickly appeared as time went
by. I have to unmount the drive and unlink pktcdvd0 with hdb to stop
them.

The messages appear several minutes after mounting the drive even if I
just mount it and do nothing else.

On the other hand, if I remove the module ide-cd and introduce the
module ide-scsi and then link /dev/pktcdvd0 with /dev/scd0 and mount the
drive, it seems to work perfectly.

So, it seems that for udf writing the ide-scsi emulation is still
required (at least, it is for me!). 

In any case, thanks a lot for providing this useful tool.
-- 
Miguel Quir?s Oloz?bal
Departamento de Qu?mica Inorg?nica
Universidad de Granada
mquiros<at>ugr<dot>es
mquiros<arroba>ugr<punto>es
Tel?fono: 958240441



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Re: [d-kernel] about packet writing in 2.6.x

[Michael Shigorin]

On Mon, Mar 08, 2004 at 12:57:43AM +0300, Konstantin A. Lepikhov wrote:
> ----- Forwarded message from Miguel Quir?s Oloz?bal <mquiros@ugr.es> -----
>   end_request I/O error /dev/hdb sector .... Buffer I/O error
> On the other hand, if I remove the module ide-cd and introduce the
> module ide-scsi and then link /dev/pktcdvd0 with /dev/scd0 and mount the
> drive, it seems to work perfectly.

Наблюдал позавчера схожее на нашем 2.6.2 -- с ATAPI грабли,
пропавшие на ide-scsi.

-- 
 ---- WBR, Michael Shigorin <mike@altlinux.ru>
  ------ Linux.Kiev http://www.linux.kiev.ua/