Comment 55 for bug 219393

Hello,

I am currently using Ubuntu 10.04 using the P35-DS3R raid as described above. I have 2 drives in RAID 0 config and ubuntu installed on another IDE drive. I don't care about seeing the raid, but I am being affected by the HPA problem. It always seems to unlock one of my RAID drives which causes it to be seen as member offline on my next warm reboot. A cold reboot fixes the problem. I tried the method above to create libata-options and use the update methods, I have tried setting ignore_hpa=1 and 0 but the system still unlocks the drive. Am I missing something? I don't know how to add libata.ignore_hpa to the kernel command line and can't seem to find good documentation.

Jun 23 17:28:18 peter-desktop kernel: [ 1.336070] ata3.00: HPA unlocked: 312579695 -> 312581808, native 312581808
Jun 23 17:28:18 peter-desktop kernel: [ 1.336074] ata3.00: ATA-7: ST3160815AS, 4.AAA, max UDMA/133
Jun 23 17:28:18 peter-desktop kernel: [ 1.336077] ata3.00: 312581808 sectors, multi 0: LBA48 NCQ (depth 31/32)
Jun 23 17:28:18 peter-desktop kernel: [ 1.369000] ata3.00: configured for UDMA/133