[Xenomai] Linux ATA driver issues and lockups

Paul paul_c at tuxcnc.org
Fri Aug 29 18:38:57 CEST 2014


On Thursday 28 August 2014, Matthew Lindner wrote:
> We are using an Advantech-PCM9389 board running Linux 3.10.32 with
> Xenomai 2.6.3. Regularly there is an error that occurs. Sometimes
> operation continues as normal, sometimes the operating system freezes
> (with no panic).
 <snip> 
> Has anyone experienced things similar to this?
>
> Jul 29 04:34:09 delta kernel: ata1.00: exception Emask 0x0 SAct 0x0
> SErr 0x0 action 0x6 frozen
> Jul 29 04:34:09 delta kernel: ata1.00: BMDMA stat 0x24
> Jul 29 04:34:09 delta kernel: ata1.00: failed command: WRITE DMA
> Jul 29 04:34:09 delta kernel: ata1.00: cmd
> ca/00:10:68:11:40/00:00:00:00:00/e0 tag 0 dma 8192 out
> Jul 29 04:34:09 delta kernel:         res
> 50/00:00:68:11:40/00:00:00:00:00/e0 Emask 0x2 (HSM violation)
> Jul 29 04:34:09 delta kernel: ata1.00: status: { DRDY }

Experienced similar problems with a couple of drives, one an SD card (if 
that makes any difference). Replaced the drives with known good ones 
and the problem disappeared.

What you may have is a drive that is in the early stages of failure. I'd 
recommend backing up any important data and replacing it. If you must 
use the old drive, save it for non-critical applications.


Regards, Paul.




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