Further details:
The ATA drive in questions is:
ad0: 114473MB WDC WD1200JB-00DUA3 [232581/16/63] at ata0-master PIO4
The PIO4 comes from booting with 'hw.ata.ata_dma=0'; it would otherwise be
UDMA66.
Basically, if I use atacontrol to set that channel to WDMA2 or below, then I
get no errors
I recently re-installed a SCSI tape drive on my -CURRENT server, and began
loading the IDE bus more than I head in a few months. I immediate started
getting console logs like:
Oct 10 14:39:26 kanga kernel: ata0: resetting devices ..
Oct 10 14:39:26 kanga kernel: done
Oct 10 14:39:26
