[Bug 1770481] Re: core: fall back to bind-mounts for PrivateDevices= execution environments

[Christian Brauner]

We just had a short discussion on systemd and for systemd 229 on 16.04
we also need:

9e5f825280192be429cc79153235d12778427fae :
https://github.com/systemd/systemd/commit/9e5f825280192be429cc79153235d12778427fae

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Title:
  core: fall back to bind-mounts for PrivateDevices= execution
  environments

Status in systemd package in Ubuntu:
  New

Bug description:
  Hey,

  Currently any service that has PrivateDevices=true set will fail to
  start in unprivileged containers since mknod is not possible and in
  privileged containers that drop CAP_MKNOD. I pushed a patch to systemd
  upstream that solves this problem and makes PrivateDevices useable in
  both scenarios. It would be great if this could be backported to
  Ubuntu 16.04 and 18.04. We already have a lot of users that would like
  this feature enabled/don't want to edit each service file:

  16498617443da94533ef9ae28be0ffaace40c526 :
  https://github.com/systemd/systemd/commit/af984e137e7f53ca3e2fd885b03a25e17fdd0fad

  af984e137e7f53ca3e2fd885b03a25e17fdd0fad :
  https://github.com/systemd/systemd/commit/16498617443da94533ef9ae28be0ffaace40c526

  Thanks!
  Christian

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