On Mon, Oct 03, 2016 at 12:22:51PM -0700, Andy Grover wrote: > Hi Mike and GregKH, > > I want a way to get devicemapper events without using the DM ioctl, > because that requires creating a thread to sleep in the ioctl for each > dm device I want events from. > > It would seem like using uevents and KOBJ_CHANGE would be a good way > to do this, but Mike said that the uevent maintainers (Greg that's > you?) did not think this was a good idea? KBOJ_CHANGE is a tricky one. It has been used for a variety of different things, but usually it is used to show that a major change has happened with a device like a docking station plug in or out. How often do DM events happen? What is triggering them? How do you want to send them to userspace? Through a sysfs file? Why not just use your own netlink connection? thanks, greg k-h -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
