On Thu, 26 Feb 2009 10:07:17 +0900
Tejun Heo <tj@xxxxxxxxxx> wrote:
> Hello,
>
> Chuck Ebbert wrote:
> >> How did it go?
> >
> > I found another machine with the same chipset and a different ATAPI SATA
> > drive; that one works okay in ahci mode.
>
> Well, there's no way all ICH9Ms are broken, so I'm afraid 'the same
> chipset' is a tad bit too wide unless it was the same board/machine.
The other machine has what seems to be a "real" SATA DVD writer in it.
It reports udma5 as the connect speed. This one seems to be a PATA drive
with an internal SATA bridge and is connecting as mwdma2.
> > There are no messages at all between "EH complete" and the string of SCSI
> > error messages:
> ...
> > ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
> > ata2.00: cmd a0/01:00:00:00:02/00:00:00:00:00/a0 tag 0 dma 512 in
> > cdb a1 08 2e 00 00 00 00 00 40 ec 00 00 00 00 00 00
> > res 40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
> > ata2.00: status: { DRDY }
> > ata2: hard resetting link
> > ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> > ata2.00: configured for MWDMA2
> > ata2: EH complete
>
> Here, BLANK has timed out but the device was recovered okay.
>
I ran 'hdparm -I' here. Why would it send BLANK to the drive??
(There was a 1.4 GB DVD-RW in the drive when I did that.)
Also there is no "applying bridge limits" message here when it resets
like there is when the system boots.
> > sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
> > sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current]
> > sr 1:0:0:0: [sr0] Add. Sense: Logical block address out of range
> > end_request: I/O error, dev sr0, sector 0
>
> And after that, the media can't be read, so this one seems normal.
>
The media wasn't blanked -- rebooting lets me read it again.
Also, running 'hdparm -I' with no disk in the drive outputs:
/dev/sr0:
HDIO_DRIVE_CMD(identify) failed: Invalid exchange
And strangely enough, I get the same message with a normal DVD disk in
the drive too...
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