HI Tejun, setting irqpoll fixed both problems, and there are no "nasty grams" in dmesg now. The original reason I was trying to use the hdparm -u on /dev/sda was because it was hanging for a few seconds when doing writes to the CFdisk, and in the past that was the kind of thing that hdparm -u would generally fix. Now with the irqpoll kernel option, the /dev/sdb SATA drive was found, and I can mount it and write to it. The CFcard /dev/sda is also responding to writes better than before. Thanks for the suggestion to use irqpoll. What is the problem within the driver(s) that is requiring irqpoll. ? Best regards, C. W. Wright ----- Original Message ---- > From: Tejun Heo <htejun@xxxxxxxxx> > To: osb972ww-linuxczmil@xxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx; IDE/ATA development list <linux-ide@xxxxxxxxxxxxxxx> > Sent: Thursday, March 20, 2008 10:23:50 PM > Subject: Re: Fw: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3 > > Hello, > > osb972ww-linuxczmil@xxxxxxxxx wrote: > > Greetings, > > I'm having a problem with 2.6.23.1-42 (Fedora 8) properly driving a SATA > > drive. Although it is detected during boot as indicated by the dmesg below, > > once the sytstem is up and running, the drive is not accessible. The second > > issue is with the CFdrive on the the primary IDE. It works, but I can't > enable > > interrupts with hdparm -u 1 /dev/sda. > > > > The interesting thing is when I put in a Fedora 5 system with a 2.6.17 > kernel, > > everything works as expected. I can hdparm -u 1 /dev/hda and it works as > expected, and > > the SATA drive is detected and works properly all on the exact same > hardware. > > > > I've tried several different SATA drives also. Thery all work on the old > > Fedora 5/ 2.6.17 system, and none work on Fedora 8/2.6.23 or 2.6.24 kernels. > > Does irqpoll kernel parameter help? > > -- > tejun > -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
