** Description changed: Hello, When using physical NIC passthrough in LXD containers [1], netplan fails when trying to run `udevadm`. Using these LXD devices for the container, where enp6s0 is a spare physical NIC: ``` devices: - eth0: - name: eth0 - nictype: physical - parent: enp6s0 - type: nic - root: - path: / - pool: default - type: disk + eth0: + name: eth0 + nictype: physical + parent: enp6s0 + type: nic + root: + path: / + pool: default + type: disk + ``` + + Netplan config (the default): + ``` + network: + version: 2 + ethernets: + eth0: + dhcp4: true ``` This happens when netplan is run in the container: ``` $ sudo netplan apply eth0: Failed to write 'move' to '/sys/devices/pci0000:00/0000:00:01.5/0000:06:00.0/virtio11/net/eth0/uevent': Permission denied Traceback (most recent call last): - File "/usr/sbin/netplan", line 23, in <module> - netplan.main() - File "/usr/share/netplan/netplan_cli/cli/core.py", line 58, in main - self.run_command() - File "/usr/share/netplan/netplan_cli/cli/utils.py", line 332, in run_command - self.func() - File "/usr/share/netplan/netplan_cli/cli/commands/apply.py", line 62, in run - self.run_command() - File "/usr/share/netplan/netplan_cli/cli/utils.py", line 332, in run_command - self.func() - File "/usr/share/netplan/netplan_cli/cli/commands/apply.py", line 255, in command_apply - subprocess.check_call(['udevadm', 'trigger', '--action=move', '--subsystem-match=net', '--settle']) - File "/usr/lib/python3.12/subprocess.py", line 413, in check_call - raise CalledProcessError(retcode, cmd) + File "/usr/sbin/netplan", line 23, in <module> + netplan.main() + File "/usr/share/netplan/netplan_cli/cli/core.py", line 58, in main + self.run_command() + File "/usr/share/netplan/netplan_cli/cli/utils.py", line 332, in run_command + self.func() + File "/usr/share/netplan/netplan_cli/cli/commands/apply.py", line 62, in run + self.run_command() + File "/usr/share/netplan/netplan_cli/cli/utils.py", line 332, in run_command + self.func() + File "/usr/share/netplan/netplan_cli/cli/commands/apply.py", line 255, in command_apply + subprocess.check_call(['udevadm', 'trigger', '--action=move', '--subsystem-match=net', '--settle']) + File "/usr/lib/python3.12/subprocess.py", line 413, in check_call + raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['udevadm', 'trigger', '--action=move', '--subsystem-match=net', '--settle']' returned non-zero exit status 1. $ apt-cache policy netplan.io netplan.io: - Installed: 1.1.1-1~ubuntu24.04.1 - Candidate: 1.1.1-1~ubuntu24.04.1 - Version table: - *** 1.1.1-1~ubuntu24.04.1 500 - 500 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages - 100 /var/lib/dpkg/status - 1.0-2ubuntu1.2 500 - 500 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages - 1.0-2ubuntu1 500 - 500 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages + Installed: 1.1.1-1~ubuntu24.04.1 + Candidate: 1.1.1-1~ubuntu24.04.1 + Version table: + *** 1.1.1-1~ubuntu24.04.1 500 + 500 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages + 100 /var/lib/dpkg/status + 1.0-2ubuntu1.2 500 + 500 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages + 1.0-2ubuntu1 500 + 500 http://archive.ubuntu.com/ubuntu noble/main amd64 Packages ``` This occurs in Jammy and Noble containers. A few things here: udevadm changed its return code logic in Feb 2021 to return errors when it fails to trigger devices. LXD does not handle udev in containers the way systemd upstream recommends [2][3] (/sys is mounted rw), so udevadm will trigger some devices and fail on others in a LXD container. Snapd ran into this problem when the udevadm change made its way into Ubuntu 21.10. They have a reasonable summary of the issue & their fix [4]. This boils down to snapd simply ignoring errors from `udevadm trigger`. It should be pretty straightforward to do the same fix for netplan [5], but I'd like someone with a little more exposure to the codebase to weigh in on this. Thanks! [1] https://documentation.ubuntu.com/lxd/en/latest/reference/devices_nic/#nictype-physical [2] https://github.com/systemd/systemd/issues/14431#issuecomment-570198194 [3] https://www.freedesktop.org/wiki/Software/systemd/ContainerInterface/ [4] https://github.com/canonical/snapd/pull/11056#pullrequestreview-806332045 [5] https://github.com/canonical/netplan/blob/main/netplan_cli/cli/commands/apply.py#L255
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2095203 Title: `netplan apply` fails in LXD container with physical NIC passthrough To manage notifications about this bug go to: https://bugs.launchpad.net/netplan/+bug/2095203/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
