[Nix-dev] NixOS hangs on boot after upgrading 15.09 -> 16.03; systemd update to blame?

[Tomasz Czyż]

James, maybe it's worth to open the ticket on
https://github.com/NixOS/nixpkgs/issues/

2016-06-23 4:08 GMT+01:00 James Cook <james.cook at utoronto.ca>:

> On 22 June 2016 at 19:27, James Cook <james.cook at utoronto.ca> wrote:
> > After updating my desktop from 15.09 to 16.03, it hangs on boot after
> > printing the message "regenerating udev hardware database". I do not
> > think the problem is directly related to that message; see below. Any
> > ideas for debugging this?
> >
> > Here's what I've figured out so far:
> >
> > * Using git-bisect, it seems that the problem starts at commit
> > ecbe04b4, "systemd: Update to 225". (I had to cherry-pick 3cc04956,
> > "libseccomp: Fix hash", to got it to build.)
> >
> > * I don't think the script that prints "regenerating udev hardware
> > database" is the one that hangs. I added a debugging echo command to
> > the end of system.activationScripts.udevd (in
> > nixos/modules/services/hardware/udev.nix), and I saw the extra message
> > when I booted. So the hang happens after.
> >
> > My next step was going to be to add more debugging statements to the
> > boot process, but I'm having trouble figuring out where any of that
> > stuff is. I can't find where system.activationScripts.udevd is called
> > from, and I was mystified to find that grep -R "egenerating udev"
> > /nix/store/(...)-nixos-16.0.3.git.3cc0495M produces no output (except
> > some errors, e.g. etc/zoneinfo/posix is a directoly loop).
> >
> > James
>
> Another note: the problem also happens on master (commit 0167eef9).
> The "regenerating udev hardware database..." message is no longer
> printed at master; the last messages before the hang are "setting up
> /etc..." and a bunch of "removing obsolete symblink ..." and "removing
> group ..." messages.
>
> James
> _______________________________________________
> nix-dev mailing list
> nix-dev at lists.science.uu.nl
> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>



-- 
Tomasz Czyż
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.science.uu.nl/pipermail/nix-dev/attachments/20160623/3de8f0a0/attachment.html>