On Tue, Mar 08, 2022 at 07:42:40AM +0100, Hannes Reinecke wrote: > Most rules relating to storage devices test for both, 'add' _and_ 'change' > as DM devices are only usable after a 'change' event. > In particular multipath has been coded with that in mind, so I don't see any > issues with just adding the RO setting to the 'add' event. We don't even need that. An application needs to look at the initial device state at add time. We can't add extra arguments to the add event for every bit of state. And in this case - if you're using dm-multipath on nvme you're already doing something horribly wrong, and no amount of tweaking uevents is going to fix that.