disk errors: CAM status: Uncorrectable parity/CRC error

[Steven Hartland]

Try reducing the disk connection speed down to see if that helps.

On Sun, 24 Sep 2017 at 06:49, Graham Menhennitt <graham at menhennitt.com.au>
wrote:

> G'day all,
>
> I'm setting up a machine running 11-Stable on a PC Engines APU2C board.
> It has a 16Gb SSD as its first disk (ada0), and a Seagate 2Tb SATA-3
> disk as its second (ada1). I'm getting lots of read errors on the second
> disk. They appear on the console as:
>
> (ada1:ahcich1:0:0:0): READ_FPDMA_QUEUED. ACB: 60 00 00 6b 02 40 00 00 00
> 01 00 00
> (ada1:ahcich1:0:0:0): CAM status: Uncorrectable parity/CRC error
> (ada1:ahcich1:0:0:0): Retrying command
>
> dmesg:
>
> <ST2000DM001-1ER164 CC25> ACS-2 ATA SATA 3.x device
> ada1: Serial Number XXXXXXXX
> ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
> ada1: Command Queueing enabled
> ada1: 1907729MB (3907029168 512 byte sectors)
> ada1: quirks=0x1<4K>
>
> I've replaced the disk and the cable without improvement. Unfortunately,
> I don't have a second CPU board to try.
>
> Is it possible that the board can't keep up with the data coming from
> the disk? If so, can I try slowing it down somehow?
>
> Any other suggestions, please?
>
> Thanks,
>
>      Graham
>
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