Comment 56 for bug 219393

AS I already stated before and again, look for the HDAT2 utility, can be put
on a booteable CD (dos based)

Configure your hard disk as "IDE" (for the moment) boot with a booteable cd
and run HDAT2 (I think hdat2 comes with a booteable cd now)

Run HDAT2, and disable HPA from both disks.

Your problem with raid will be resolved forever, trust me. BTW, this
information will be written in the Hard Disk's firmware so it does not reset
with a power off.

On Wed, Jun 23, 2010 at 1:15 PM, magnum696 <email address hidden> wrote:

> 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
>
> --
> HPA ( Host Protected Area ) interferes with dmraid
> https://bugs.launchpad.net/bugs/219393
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>