Re: ATA resets with Intel 8/C220 and HGST drive

[Dan Ritter <dsr@randomstring.org>]

On Mon, Apr 27, 2015 at 03:03:58PM +0200, Nicolas George wrote:
> [  409.772773] ata2.00: failed command: WRITE FPDMA QUEUED
> [  409.772776] ata2.00: cmd 61/28:88:e0:a3:04/00:00:02:00:00/40 tag 17 ncq 20480 out
> [  409.772776]          res 50/00:28:e0:a3:04/00:00:02:00:00/40 Emask 0x10 (ATA bus error)
> [  409.772777] ata2.00: status: { DRDY }
> [  409.772779] ata2: hard resetting link
> [  410.092732] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [  410.097670] ata2.00: configured for UDMA/133
> 
> Last week, hinted by the penultimate line, I tried to lower the speed of the
> SATA link permanently, and it worked. I did this by adding
> "libata.force=2:3.0Gbps" to the kernel command line (configured using
> /etc/default/grub).
> 
> Since then, no reset happened; I am confident that seven days without them
> are not a coincidence.

Two options occur to me:

1. There may be a firmware update for your disk.

2. You may have a bad SATA cable.

-dsr-