Re: Problem with concurrent SATA-Writes

[Tobias Reinhard]

Lennart Sorensen wrote:
> Might it be a problem with having two things using /dev/zero at the same
> time?
No, dding from /dev/zero two times at the same time is working perfectly

> What blocksize do you use with dd?
Generally I use 1M. But the Problem is the same with 128k or with 4k

> What happens if you do dd from /dev/zero to two different files on one
> of the hds (with some filesystem on the drive obviously)?
I did it without a FS on it and its no problem to write at two different 
locations - as long as they are on one disc.

It seems to me that the driver has problems with handling two 
write-requests on two ports at the same time.

Tobias
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