persisting ATA problems

Ion-Mihai Tetcu itetcu at
Mon Oct 4 13:18:07 PDT 2004

On Mon, 04 Oct 2004 21:46:50 +0200
Søren Schmidt <sos at> wrote:

 [ ... ]

> > Today I had the following in log:
> > 
> > ad0: WARNING - WRITE_DMA interrupt was seen but timeout fired LBA=637375
> > 
> > i don`t know exactly what does it mean and if data was written or not..
> > can anybody explain it?
> It just means that the data has hit the disk but the taskqueue that 
> should return data to the system hasn't yet. This is a warning ...

I would suggest an entry in the FAQ explaining the *_DMA errors; Søren,
I can do the SGML formatting if you send me some text.

Unregistered ;) FreeBSD "user"

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