Re: writing file to disk: not as easy as it looks

[Pavel Machek]

> > CRC errors, lost IRQs and the like are retried by the midlayer and
> > drivers and the error handling strategies will also try things like
> > reducing link speeds on repeated CRC errors.
> 
> I meant for example loose cable or so --- does it make sense to retry 
> indefinitely (until the admin plugs the cable or unmounts the filesystem) 
> or return error to the filesystem after few retries?

It is quite non-trivial to detect if it is "disk plugged back in"
vs. "faulty disk unplugged, new one plugged in"... so I suppose
automatic retry after failure of connection to disk is quite hard to
get right.

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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