Hi Uwe,
On Saturday 03 March 2007, Uwe Bugla wrote:
> Hi folks,
> the floppy mount error I mentioned is gone now in 2.6.21-rc2, and my kernel
> is smaller. Good decision to rip out Stephane's stuff, Linus!
> As I did not get a reply from Andrew I hope that the buggy stuff residing in
> 2.6.20-mm1 ( freezing my apache services
> - I already mentioned the problem some days ago - mm2 I did not try yet )
> will never be pushed into vanilla mainline.
> I owe some old CDROM and CDRW devices manufactured by TEAC (bought somewhen
> in 1999): CDR 540 and CDRW 54.
> Those old CD devices sometimes get confused with drive seek errors and status
> errors shown in dmesg.
> The newer DVD devices (LG reading device and Yamakawa burning device) do not
> show those errors at all.
> As I have finished an enourmous project 6 weeks ago (transforming some 500
> Audio CDs to MP3 format
> with kaudiocreator and lame 3.97 (320 kbit quality - preset insane) and then
> burning the material on DVDs)
> those old devices were an incredible help in some cases where the newer DVD
> devices refused to read some audio
> CDs without errors. That's why I do not want to kick them off at all. Never
> had those troubles with kernel 2.6.19 and former ones.
> Dmesg 1 says on my AMD machine with a CDR540 as /dev/hdd during boot process:
> hdd: media error (bad sector): status=0x51 { DriveReady SeekComplete Error }
> hdd: media error (bad sector): error=0x34 { AbortedCommand
> LastFailedSense=0x03 }
> ide: failed opcode was: unknown
> ATAPI device hdd:
> Error: Medium error -- (Sense key=0x03)
> (reserved error code) -- (asc=0x02, ascq=0x00)
> The failed "Read 10" packet command was:
> "28 00 00 00 00 10 00 00 02 00 00 00 00 00 00 00 "
> end_request: I/O error, dev hdd, sector 64
Hmm. why does it try to read sector 64 during boot?
Could you make sure that there are not configuration files/options incorrectly
referring to /dev/hdd (please grep you /etc and /boot for for "/dev/hdd")?
[ ... ]
> But even more crucial is this one:
> Dmesg 2 says on the Intel machine with a TEAC CDRW54 as /dev/hdd:
> hdd: status error: status=0x7f { DriveReady DeviceFault SeekComplete
> DataRequest CorrectedError Index Error }
> hdd: status error: error=0x7f { IllegalLengthIndication EndOfMedia
> AbortedCommand MediaChangeRequested LastFailedSense=0x07 }
> ide: failed opcode was: unknown
> For about 1 second the whole system hangs while /dev/hdd is executing some
> kind of reinitialization, just like as if you unconnect
> the data and the 12 V / 6V cable and reconnect them again while the machine
> is up and running.
It really looks like a hardware related problem (power supply/power cable).
> For a DVB-S record f. ex. the breakdown of the recording can be one
> consequence.
> Question: Can someone reading this please confirm these errors? Please take
> old CD devices to find out, not newer ones or even DVD devices!
> I am using the standard IDE driver with the following chipsets: Intel ICH4
> and SIS 5513. And please take time, as these crucial errors do not happen
> immediately, but about 4 times in about 8 - 10 hours while the machine is up
> and running.
The "randomness" of the issue is another indicator that it could be power
related. Could it be that the issue happens when the system is rather busy?
> Yours sincerely and thanks for all your efforts
>
> Uwe
> P. S.: I do not think this is a hardware error as I did not have those
> problems with kernels <= 2.6.19.
I went through 2.6.19 -> 2.6.20 IDE changes and it is highly unlikely that
the breakage is caused by IDE driver. Anyway to be sure I've prepared a
patch for you:
http://kernel.org/pub/linux/kernel/people/bart/ide-2.6.20.patch
it contains all 2.6.19 -> 2.6.20 IDE changes - we need to know whether the
2.6.20 kernel with the above patch reversed (applied with -R) works.
[ If it still won't work with the patch applied that must be some other thing
and we are left with trying git bisect or a lot of unreliable guesswork. ]
Please also post (preferably by filling bug at http://bugzilla.kernel.org)
outputs of dmesg and lspci -vvvxxx commands from 2.6.19 and 2.6.20 so we can
check if anything changed in the way that ATA devices/hosts are programmed
on your systems between 2.6.19 and 2.6.20.
I'm also cc:ing our new ide-cd Maintainer (Hi Alan) who may shed some more
light on the problems.
PS please always cc: linux-ide mailing list on ATA problems, problems won't
get fixed if information about them doesn't reach the right people...
Thanks,
Bart
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