On Thu, Jul 07, 2011 at 05:17:45PM +0200, Lars Erik Dangvard Jensen wrote:

> # Statistics for device aoestorage1-90-2-2000r6
[...]
> ata_err: 46

This tells you that some commands resulted in an error. Either the
request was invalid (like trying to read/write past the end of the
device), or the kernel reported an error. The reason should have been
logged by ggaoed.

> What can cause ata_err ? (connected to several initiators all
> reporting ata error):
> aoe: ata error cmd=24h stat=41h from e90.2
> end_request: I/O error, dev etherd/e90.2, sector 3898431360
> Buffer I/O error on device etherd/e90.2, logical block 487303920
> aoe: ata error cmd=24h stat=41h from e90.2
> end_request: I/O error, dev etherd/e90.2, sector 3898431360
> Buffer I/O error on device etherd/e90.2, logical block 487303920
> ...
> 
> I've checked the physical raid array on the target but this have no
> errors, and all disks are good.
> 
> Can merge-delay or queue-length cause ata errors?

Not really.

Gabor

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