Messages in this thread | | | Date | Tue, 25 Jul 2006 01:57:08 -0400 | From | Jeff Garzik <> | Subject | Re: 2.6.18-rc2 Intermittent failures to detect sata disks |
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Keith Owens wrote: > Keith Owens (on Fri, 21 Jul 2006 16:18:47 +1000) wrote: >> I am seeing an intermittent failures to detect sata disks on >> 2.6.18-rc2. Dell SC1425, PIIX chipset, gcc 4.1.0 (opensuse 10.1). >> Sometimes it will detect both disks, sometimes only one, sometimes none >> at all. AFAICT it only occurs after a soft reboot, and possibly only >> after an emergency reboot. Alas the problem is so intermittent that it >> is hard to tell what conditions will trigger it. > > I applied the debug patch below, turn on prink timing and set > initdefault to 6 so the machine was in a continual soft reboot cycle. > After multiple cycles I got this trace. piix_sata_prereset() reads a > zero config byte for almost 15 seconds then it changes to 0x11, > followed by a hang. Why is the config byte initially zero, and what > makes it change? The normal value for pcs is 0x33.
Can you try 2.6.18-rc2-git3?
Jeff
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