On Mon, 29 Jan 2007, Mike Christie wrote:
>
> What chipsets are you guys using?
I can see it with a
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE
Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family)
Serial ATA Storage Controller IDE (rev 02)
where the disk is on the SATA side, and the DVD writer is PATA using
ide_piix.
> I tried 2.6.20-rc6, and forced my cdrom to be used by the ide piix
> driver instead of the sata one, so the device shows up as hda instead of
> a scsi one. And, if I use the ide piix driver for the cdrom then it
> works fine. I see IO going through the block layer sg io code which was
> modified in 2.6.20 to support larger IOs.
That doesn't sound very different from my setup.. I wonder why it works
for you.
That said, I'm making progress with my bisection. "16 revisions left to
test after this", and three of those sixteen are
Remove unnecessary blk_queue_bounce in SG_IO
fix SG_IO bio leak
remove blk_queue_activity_fn
but I'll do the bisection 'til the bitter end, in case I get into a
similar nonsense value that the other Mike got into.
Linus
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