libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Andras Mantia]

Hi,

 since my upgrade to openSUSE 11.0, which comes with 2.6.25.4, soon 
after I start using my DVD player, I get the following in the log:

May 23 21:34:04 stein klogd: ata1.00: exception Emask 0x0 SAct 0x0 SErr 
0x0 action 0x2 frozen                                                  
May 23 21:34:04 stein klogd: ata1.00: cmd 
a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in                                                
May 23 21:34:04 stein klogd:          cdb 28 00 00 00 01 b3 00 00  01 00 
00 00 00 00 00 00                                                     
May 23 21:34:04 stein klogd:          res 
40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)                                              
May 23 21:34:04 stein klogd: ata1.00: status: { DRDY }                                                                                         
May 23 21:34:04 stein klogd: ata1: soft resetting link                                                                                         
May 23 21:34:04 stein klogd: ata1.00: configured for UDMA/33                                                                                   
May 23 21:34:04 stein klogd: ata1: EH complete                                                                                                 

[...]

May 23 21:52:53 stein klogd: ata1.00: exception Emask 0x0 SAct 0x0 SErr 
0x0 action 0x2 frozen
May 23 21:52:53 stein klogd: ata1.00: cmd 
a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
May 23 21:52:53 stein klogd:          cdb 00 00 00 00 00 00 00 00  00 00 
00 00 00 00 00 00
May 23 21:52:53 stein klogd:          res 
40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
May 23 21:52:53 stein klogd: ata1.00: status: { DRDY }
May 23 21:52:53 stein klogd: ata1: soft resetting link
May 23 21:52:54 stein klogd: ata1.00: configured for PIO0
May 23 21:52:54 stein klogd: ata1: EH complete

and this one repeats until I reboot and the drive becomes unusable. The 
process accessing the drive is stuck and not killable. I also cannot 
eject the drive.


The system is an ASUS A8V Deluxe, with the following controller:
00:0f.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)

The drive is a Lite-On/JLMS dvd reader on first channel as master:
ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xfc00 irq 14
ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xfc08 irq 15
ata1.00: ATAPI: JLMS    XJ-HD163, GH5Y, max UDMA/33

It seems to be related to the drive as if I put a Plextor CDRW instead 
of it, I could not see the error. 
Neverthless  looks to be a regression as I could use this drive without 
any problem under openSUSE 10.3, with kernel 2.6.22.17 (and many earlier 
versions as I have this drive for years).

Google gave me lot of hits for similar problem, but no solution. :(

Any hint what I could do (including testing patches) is welcome.

Andras

-- 
 
Quanta Plus developer - http://quanta.kdewebdev.org
K Desktop Environment - http://www.kde.org

Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Jeff Garzik]

Andras Mantia wrote:
> Hi,
> 
>  since my upgrade to openSUSE 11.0, which comes with 2.6.25.4, soon 
> after I start using my DVD player, I get the following in the log:
> 
> May 23 21:34:04 stein klogd: ata1.00: exception Emask 0x0 SAct 0x0 SErr 
> 0x0 action 0x2 frozen                                                  
> May 23 21:34:04 stein klogd: ata1.00: cmd 
> a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in                                                
> May 23 21:34:04 stein klogd:          cdb 28 00 00 00 01 b3 00 00  01 00 
> 00 00 00 00 00 00                                                     
> May 23 21:34:04 stein klogd:          res 
> 40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)                                              
> May 23 21:34:04 stein klogd: ata1.00: status: { DRDY }  

DRDY == device ready, and it occurs billions of times per day during 
normal use.

There is no "famous DRDY issue", you are simply seeing timeouts.

Have you tried all of: pci=nomsi, acpi=off, or noapic?

	Jeff

Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Andras Mantia]

On Friday 23 May 2008, Jeff Garzik wrote:
> Andras Mantia wrote:
> > Hi,
> >
> >  since my upgrade to openSUSE 11.0, which comes with 2.6.25.4, soon
> > after I start using my DVD player, I get the following in the log:
> >
> > May 23 21:34:04 stein klogd: ata1.00: exception Emask 0x0 SAct 0x0
> > SErr 0x0 action 0x2 frozen
> > May 23 21:34:04 stein klogd: ata1.00: cmd
> > a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in
> > May 23 21:34:04 stein klogd:          cdb 28 00 00 00 01 b3 00 00 
> > 01 00 00 00 00 00 00 00
> > May 23 21:34:04 stein klogd:          res
> > 40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
> > May 23 21:34:04 stein klogd: ata1.00: status: { DRDY }
>
> DRDY == device ready, and it occurs billions of times per day during
> normal use.

That wouldn't be a problem if it would not block the drive completely 
and cause my load to go up to extreme values like 50 or so.

> There is no "famous DRDY issue", you are simply seeing timeouts.

Well, I found that many have this "error" and have real problems. 

> Have you tried all of: pci=nomsi, acpi=off, or noapic?
>

Not yet, I will try them (but as I said it worked fine before, without 
any such kernel options).

Andras

-- 
 
Quanta Plus developer - http://quanta.kdewebdev.org
K Desktop Environment - http://www.kde.org

Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Andras Mantia]

On Friday 23 May 2008, Jeff Garzik wrote:
> Have you tried all of: pci=nomsi, acpi=off, or noapic?


So far:
pci=nomsi does not help
pci=nomsi acpi=off noapic works
pci=nomsi noapic also works

I will try noapic only as well and report.

Andras

-- 
 
Quanta Plus developer - http://quanta.kdewebdev.org
K Desktop Environment - http://www.kde.org

Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Jeff Garzik]

Andras Mantia wrote:
> On Friday 23 May 2008, Jeff Garzik wrote:
>> Have you tried all of: pci=nomsi, acpi=off, or noapic?
> 
> 
> So far:
> pci=nomsi does not help
> pci=nomsi acpi=off noapic works
> pci=nomsi noapic also works
> 
> I will try noapic only as well and report.

Generally you only want to use one of those...

	Jeff

Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

[Andras Mantia]

Jeff Garzik wrote:

>> I will try noapic only as well and report.
> 
> Generally you only want to use one of those...
>

I don't know too much of the kernel's internals... Anyway, I tried and noapic only fixes the problem. It seems the issue is the same that was reported in another thread as well meantime.

Andras

-- 
Quanta Plus developer - http://quanta.kdewebdev.org
K Desktop Environment - http://www.kde.org