Subject: Re: sd read/write timeout
To: Manuel Bouyer <bouyer@antioche.lip6.fr>
From: enami tsugutomo <enami@sm.sony.co.jp>
List: tech-kern
Date: 05/24/2000 10:11:05
Manuel Bouyer <bouyer@antioche.lip6.fr> writes:

> On Mon, May 22, 2000 at 04:40:03PM +0900, enami tsugutomo wrote:
> > Why 10s is acceptable but 60s isn't acceptable?  To provide the way to
> 
> 5*10 = 50s, 5*60 = 5mn :)

Where 5* come from?  SDRETRIES?

> > cancel active i/o before removing the device is the right thing, isn't
> > it?
> 
> Sometime the device removes itself without warnings :)

Hmm.  But, since it may be difficult to determine an exact least
necessary timeout value (especially if device can accept multiple io
request), I'm affraid that shortening timeout value causes bad
effects.

> I didn't notice PR #3009, thanks. Then would a different timeoutm, based on
> fixed ws removable media be OK ?

... and, I'm not sure the long timeout is necessary because of
T_REMOVAL, T_OPTICAL or yet other each device specific
characteristics.

enami.