On Thu, May 24 2007, René Peters wrote:
> Hello!
>
> Inserting of audio CDs causes my system to hang with high I/O-load while
> kded's mediamanagement is running.
> Long time later (round about 10-20 minutes) the system comes back again and
> i'm able to play the audio CD. The issue is reproduceable with the following
> drive:
> ->CD-R PX-W1210S
> Data CD's don't show this behavior.
> No system freeze or any other bad behavior with audio CDs after stopping
> kded's mediamanagement by hand. Maybe it is a kernel bug, maybe a bug in
> kded.
My guess would be that the program is issuing some command that craps
out the drive (or controller). It could be a wrong length, or some other
cdb field set incorrectly.
You should try and run blktrace on the device, so we can see which
command is wreaking havoc. In short steps:
- Download http://brick.kernel.dk/snaps/blktrace-git-latest.tar.gz,
untar, make, make install.
- Make sure your config has blktrace support, it's
CONFIG_BLK_DEV_IO_TRACE and is in the block layer menu.
Now you are ready to reproduce the problem.
- Run blktrace /dev/sr0 (I'm assuming you only have the one SCSI cd-rom).
- Insert an audio CD.
This should now cause the adaptec drive to go nuts like it usually does.
Once things have settled down and the freeze is over, ctrl-c blktrace.
Then do:
- blkparse sr0 -o sr0.log
and send sr0.log in a reply to this message.
--
Jens Axboe
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
