Graham Menhennitt
2017-Sep-24 05:48 UTC
disk errors: CAM status: Uncorrectable parity/CRC error
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
Steven Hartland
2017-Sep-24 10:47 UTC
disk errors: CAM status: Uncorrectable parity/CRC error
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 > > _______________________________________________ > freebsd-stable at freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"