Re: Rescan for ahcisata ?

[Paul Goyette <paul%whooppee.com@localhost>]

On Sat, 14 Jan 2012, Jonathan A. Kollasch wrote:

> > What would it take to implement DRVRESCANBUS for ahcisata?  Seems to
> > me it would be quite useful to attach and detach external drives at
> > will.
>
> drvctl -a ata_hl -r atabus<N>

Perfect - thanks!

I'm not sure if it is possible, but it would certainly be helpful if a 
better error message could be reported.

        # drvctl -r atabus0
        drvctl: DRVRESCANBUS: Invalid argument
        #

Is EINVAL (Invalid argument) a standard return value for when a driver 
requires an attribute?  If yes, perhaps it should be documented in the 
man page?

Is anyone working on a way to retrieve the possible attributes?  If I 
could figure this out, would anyone object to adding a -L (or -A) option 
to drvctl to display a list of possible attributes?





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