Hi Markus, On Fri, Feb 05, 2016 at 10:03:41AM +0100, Markus Pargmann wrote: > Hi Wouter, > > On Tuesday, February 02, 2016 04:27:00 PM Wouter Verhelst wrote: > > There already is a uevent by default when closing a device upon connect > > of the device. However, the same isn't true on disconnect. > > > > This makes it hard for userspace to keep track of whether a device is > > connected, since we are notified when the connection is created, but not > > when it is removed again. > > > > Explicitly issue a "change" uevent to remedy. > > > > [v2: incorporate feedback from udev maintainer and make sure that we > > issue a uevent upon connect as well as disconnect, rather than connect > > only] > > The systemd people had the same feedback.
Well, the systemd people and the udev people are the same people these days :-) > Basically the device is not marked as ready until a uevent is received. My > idea was to use the size property consistently. If the device is connected > the size is correctly changed and a uevent is created. On disconnect the size > is set to 0 with another uevent. > > Does this work for you as well? I will send the patch as reply. Sure. What matters most is that the uevent is done; how it's done, less so. I should add that this was meant to go with systemd #2422. I wasn't aware of #358, or I would've talked to you more :-) -- It is easy to love a country that is famous for chocolate and beer -- Barack Obama, speaking in Brussels, Belgium, 2014-03-26
