On 11/08/2020 15.38, Joonas Niilola wrote: > > On 8/11/20 11:36 AM, Jaco Kroon wrote: >> And I've already provided you one use case where udev doesn't work well >> but eudev does. I've also mentioned some historic issues I believe >> should already be fixed but which did bit me in systemd-udev which was >> never a problem in eudev. >> > Your systems seem to diverge a lot from what I'd consider as 'default'. > You must already make many changes to them. > > Before this thread I didn't even know/remember I was using eudev. It > works and there doesn't seem to be any global issues related to it. > However after reading this thread I'm a bit considered about the > maintenance state of it. > > Switched to udev. Simple as 'emerge -1 sys-fs/udev'. It works, didn't > notice any difference. > > If musl is a problem, to my knowledge musl has its own stage images, so > why can't those stages use eudev while other ones defaulting to udev?
For the sake of science, I've also moved one of my systems to sys-fs/udev and noticed a single incompatibility. There are few ways how to disable the systemd/udev predictable NIC names, one of them is to boot with net.ifnames=0, another is to mask rule file that trigger the rename, as described on wiki Long story short, on eudev it's 80-net-name-slot.rules, on udev it's 80-net-setup-link.rules The result was that my system booted without working network, as connman started to poke around Ethernet interfaces (this is ok, I had blacklisted eth*, not enp*), which then resulted in switching routing to Ethernet that failed to get IP from DHCP, even that WiFi had a fully working Internet access, so more like connman bug. (And yes, I am aware that net.ifnames=0 will work on both) This however shows two things: eudev is (no longer) drop-in replacement, as some interfaces changed in upstream udev, which leads to second thing, we need to have migration path, because even if(!) Gentoo change default (I am not a fan of this idea really), then it might lead to people doing fresh installation or reinstallation, migrating their configs resulting in not working systems/working in other way that previous one.  https://wiki.gentoo.org/wiki/Udev#Keep_classic_.27eth0.27_naming -- Piotr.
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