Reattach/redetect allways connected umass device - is it possible ?

[Bernd Walter]

On Mon, Mar 28, 2005 at 09:28:28AM -0700, Scott Long wrote:
> Poul-Henning Kamp wrote:
> >In message <42481C66.7090409 at samsco.org>, Scott writes:
> >
> >
> >>So are you saying that an async notification mechanism needs to be
> >>invented for SCSI, or that all SCSI users should be required to use
> >>SES or SAFTE enclosures for all SCSI devices, or that we should be like
> >>Windows and constantly poll the devices?
> >
> >
> >I don't care _how_ we make CAM/SCSI behave like the users expect.
> >
> 
> Well, I waved my hands at it for a few minutes, but nothing changed... 
> hmm.... =-)
> 
> My question to you was partially rhetorical, since a good solution just
> doesn't exist.  Even the polling option isn't good because it will
> disrupt things like burning CD's; in Windows, the CD burning software
> packages that are out there go through an impressive set of hoops to
> deal with this polling problem.

What exactly is the problem with burning and polling?
I personaly could easily imagine a kernel thread that polls devices
e.g. once every second.
It is out of question IMO that we need an async change notification
framework somehow.

-- 
B.Walter                   BWCT                http://www.bwct.de
bernd at bwct.de                                  info at bwct.de