Date: Mon, 28 Mar 2005 15:04:51 +0200 From: Bernd Walter <ticso@cicely12.cicely.de> To: Vladimir Grebenschikov <vova@fbsd.ru> Cc: ticso@cicely.de Subject: Re: Reattach/redetect allways connected umass device - is it possible ? Message-ID: <20050328130451.GB14532@cicely12.cicely.de> In-Reply-To: <1112014711.1022.37.camel@localhost> References: <30956.1112011996@critter.freebsd.dk> <1112014711.1022.37.camel@localhost>
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On Mon, Mar 28, 2005 at 04:58:31PM +0400, Vladimir Grebenschikov wrote: > ? ??, 28/03/2005 ? 14:13 +0200, Poul-Henning Kamp ?????: > > In message <20050328114633.GZ14532@cicely12.cicely.de>, Bernd Walter writes: > > > > >> camcontrol detach da0; camcontrol rescan all > > >> helps, but, it should be much better if it will be issued automatically. > > > > > >Yes - GEOM seems to ignore media change signals from drives. > > >I've added PHK to the recipient list - maybe he has an idea about this > > >problem. > > > > No, GEOM doesn't ignore any such thing, because as far as I know > > GEOM doesn't get any such thing to ignore in the first place. > > So, let's imagine following situation: > > We get SCSI BUS with removable da device. > device detected as da0 and not mounted. > Device disconnected from SCSI bus. > And finally, another device with different geometry connected with same > SCIS ID. This ist not a *media* exchange - this is a *device* and in this case even a scbus exchange. > Please describe how to suppose detect geometry change in this case ? This is a completely different case. You get a new device and GEOM gets a new device event. That your device didn't get disconnected is your problem. You won't see the new device as long as the old device blocks the USB event thread. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de
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