Hello Mark, Am Donnerstag, 22. Januar 2004 14:26 schrieb Mark Knecht: > On Thu, 2004-01-22 at 04:39, Peter Ruskin wrote: > > On Thursday 22 Jan 2004 04:05, Mark Knecht wrote: > > > QUESTION: how do I test these devices (cdrw and dvdr drives) to > > > ensure DMA is still enabled? I cannot figure out yet what parameters > > > to give hdparm -I /dev/WHAT? > > > > > > Wizard root # hdparm -I /dev/cdroms/cdrom0 > > > /dev/cdroms/cdrom0 not supported by hdparm > > > > If you're using ide-scsi those devices are not supported by hdparm. > > (Someone tell me if I'm wrong). > > Right. That's what I see. So my question is that we know the devices are > attached to an IDE controller and we want to determine whether DMA is > enabled for the IDE controller. How do we do it? > > 1) Some different program *like* hdparm that tells us? > > 2) Run some sort of benchmark that shows us? > > 3) Something else? > > Of course, you've sort of shown me that I might not need SCSI emulation > anyway, but I'm not sure which way to go and why just yet, so I'd like > to know how to make DMA is enabled in the channel.
I didn't follow this thread from the beginning, but have you tried using the devfsd-names for your devices? eg: hdparm -I /dev/ide/host0/bus0/target0/lun0/disc These should exist even with ide-scsi. I cannot check this, as I am burning CDs with atapi and a 2.6.1-kernel. > - Mark HTH, Michael -- [EMAIL PROTECTED] mailing list
