Hi Bjorn,

On Fri, Nov 28, 2014 at 2:42 AM, Ask Bjørn Hansen <a...@develooper.com> wrote:
> Hi everyone,
>
> I’ve spent some time off this week upgrading my 
> build-my-personal-NanoBSD-image tool from a VMware virtual machine to a 
> physical box running a 32-bit build-box under bhyve.
>
> So far so good — all that has been working really well.
>
> My nanobsd image is only used on Soekris and PC Engines boxes and my 
> production images are really small (some <100MB storage and ~32MB memory), so 
> I have a crufty kernel config that excluded a bunch of stuff I (thought I) 
> don’t need.
>
> Now I’d like to run my built image under bhyve for testing. It’s easier for 
> me if the disk comes up as an ada device, so I’m using ahci-hd instead of 
> virtio-blk. With virtio-blk the system boots but the device has the “wrong" 
> name.
>
> With ahci-hd it can’t read my partition for some reason.
>
> I’ve tried with both file and zvol backing store.
>
> This is the error I’m getting:
>
> ada0: <BHYVE SATA DISK 001> ATA-8 SATA 2.x device
> ada0: Serial Number 123456
> ada0: 300.000MB/s transfers (SATA 2.x, PIO4, PIO 8192bytes)
> ada0: Command Queueing enabled
> ada0: 260MB (532480 512 byte sectors: 16H 63S/T 528C)
> ada0: Previously was known as ad4
> Unsupported cmd:c4
>                   (ada0:ahcich0:0:0:0): READ_MUL. ACB: c4 00 c1 1f 08 40 00 
> 00 00 00 04 00
> (ada0:ahcich0:0:0:0): CAM status: ATA Status Error
> (ada0:ahcich0:0:0:0): ATA status: 41 (DRDY ERR), error: 04 (ABRT )
> (ada0:ahcich0:0:0:0): RES: 41 04 00 00 00 40 00 00 00 00 00
> (ada0:ahcich0:0:0:0): Retrying command
> Unsupported cmd:c4
>
>
> Any suggestion for what I’m doing wrong? Did I compile my kernel with some 
> idiotic set of not-working options?
>

Are you, by any chance, setting the tunable 'hw.ata.ata_dma' to 0 to
disable DMA?

I ask this because in the dmesg above you have:
ada0: 300.000MB/s transfers (SATA 2.x, PIO4, PIO 8192bytes)

In my setup, I get this instead:
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)

best
Neel

>
> Ask
>
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