Date: Mon, 28 Mar 2005 15:28:02 +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: <20050328132801.GD14532@cicely12.cicely.de> In-Reply-To: <1112015844.1022.44.camel@localhost> References: <30956.1112011996@critter.freebsd.dk> <1112014711.1022.37.camel@localhost> <20050328130451.GB14532@cicely12.cicely.de> <1112015844.1022.44.camel@localhost>
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On Mon, Mar 28, 2005 at 05:17:24PM +0400, Vladimir Grebenschikov wrote: > ? ??, 28/03/2005 ? 15:04 +0200, Bernd Walter ?????: > > 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. > > Ok, so my case is media exchange, not device exchange. No - it is a device exchange. GEOM only has problems with media exchange. A new device is no problem for GEOM. Your problem is very likely not GEOM related. > How it is supposed to work in this case ? You get a new device and all layers are freshly setup. That is get's the same device numers as the old is unrelated, it's still a new device after all. You should see why your disconnect doesn't work. Do you run recent RELENG_5 or -current code? Disconnect the device and "ps -axl | grep usb" - you will see the usb threads - each host controller has one of them. Normaly idle usb threads should wait in usbevt and usbtask should wait in usbtsk - see what it is in your case. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de
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