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/
