В пн, 28/03/2005 в 15:28 +0200, Bernd Walter пишет: > 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_at_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. I guess, may bad example messed up discussion. sorry. >From begin: I have USB-connected card-reader (Sony Memory Stick). It connected as umass0 (ehci), then as da0. It can't be unplugged. (on-board notebook device) Problem: When I change card (it was not mounted) da0 device does not detect media change and following mount fails. Workarounds (I know three at this moment): - kldunload umass; kldload umass - the ugliest, will affect other umass devices. - cat /dev/null > /dev/da0 before mount - GEOM hacking (also I do not like do cat into device with data) - camcontrol detach da0; camcontrol rescan all - requires CAM patch So, I am asking about solution, how it is supposed to work, I guess, like with CD, there is should not be special exercises after card change. Probably my card-read is too stupid to send any media change notifications, how to test it ? Another, probably related question, is there way to detect card insertion/removal ? > > 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. It is not disconnected physically, just card removed. > Do you run recent RELENG_5 or -current code? 6-CURRENT. > 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. -- Vladimir B. Grebenchikov vova_at_fbsd.ruReceived on Mon Mar 28 2005 - 12:06:17 UTC
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