From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Rene Herman" <rene.herman@gmail.com>
Cc: "Jens Axboe" <jens.axboe@oracle.com>,
"Al Viro" <viro@ftp.linux.org.uk>,
"Linux Kernel" <linux-kernel@vger.kernel.org>
Subject: Re: mcdx -- do_request(): non-read command to cd!!
Date: Mon, 2 Apr 2007 10:07:31 +0300 [thread overview]
Message-ID: <84144f020704020007x879f781x45f395298d92cbe@mail.gmail.com> (raw)
In-Reply-To: <4610481D.8000102@gmail.com>
Hi Rene,
On 4/2/07, Rene Herman <rene.herman@gmail.com> wrote:
> root@5va2:~# dd if=/dev/mcdx0 of=/dev/null bs=2048
> 0+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.000221955 seconds, 0.0 kB/s
> root@5va2:~#
>
> This I know isn't:
>
> root@5va2:~# readcd dev=/dev/mcdx0 f=/dev/null
> Segmentation fault
> root@5va2:~#
>
> (leaves a "note: readcd[1174] exited with preempt_count 1" in the log)
>
> and after a "mount -t iso9660 /dev/mcdx0 /mnt/cdrom", a:
>
> root@5va2:~# tar cv /mnt/cdrom >/dev/null
>
> has upto now done all of:
[snip]
Try with CONFIG_PREEMPT_NONE as suggested by Jens. Can we see strace
for the dd, readcd, and tar runs, please?
prev parent reply other threads:[~2007-04-02 7:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-30 21:21 Rene Herman
2007-03-31 6:47 ` Jens Axboe
2007-03-31 18:23 ` Rene Herman
2007-04-01 10:06 ` Pekka Enberg
2007-04-01 10:16 ` Pekka Enberg
2007-04-02 0:02 ` Rene Herman
2007-04-02 0:07 ` Rene Herman
2007-04-02 6:50 ` Pekka J Enberg
2007-04-02 7:10 ` Jens Axboe
2007-04-02 7:37 ` Pekka J Enberg
2007-04-02 8:55 ` Pekka J Enberg
2007-04-02 9:32 ` Boaz Harrosh
2007-04-02 9:42 ` Pekka J Enberg
2007-04-02 9:42 ` Jens Axboe
2007-04-02 21:02 ` Rene Herman
2007-04-02 15:18 ` Rene Herman
2007-04-02 15:45 ` Rene Herman
[not found] ` <Pine.LNX.4.64.0704021837480.6518@sbz-30.cs.Helsinki.FI>
[not found] ` <46112650.8080208@gmail.com>
[not found] ` <Pine.LNX.4.64.0704021906040.7500@sbz-30.cs.Helsinki.FI>
[not found] ` <461165FD.2010508@gmail.com>
[not found] ` <Pine.LNX.4.64.0704030908420.20080@sbz-30.cs.Helsinki.FI>
[not found] ` <Pine.LNX.4.64.0704030956330.20741@sbz-30.cs.Helsinki.FI>
2007-04-03 14:26 ` Rene Herman
2007-04-03 17:37 ` Pekka J Enberg
[not found] ` <461256C1.4020906@gmail.com>
2007-04-03 14:33 ` Pekka J Enberg
2007-04-03 17:31 ` Pekka J Enberg
2007-04-03 18:14 ` Rene Herman
2007-04-03 18:32 ` Pekka J Enberg
2007-04-04 2:10 ` Rene Herman
2007-04-04 6:30 ` Pekka Enberg
2007-04-04 6:19 ` Jens Axboe
2007-04-02 15:39 ` Rene Herman
2007-04-02 6:42 ` Jens Axboe
2007-04-02 7:07 ` Pekka Enberg [this message]
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