Network usage 0 on eth0 on v3.3 was fine on v3.1

[lcherone]

Required information

• Distribution: Ubuntu (server)
• Distribution version: 18.04 driver_version: 3.0.1 kernel_architecture: x86_64 kernel_version: 4.15.0-29-generic server_version: "3.3" storage: btrfs storage_version: "4.4" server_clustered: false

Issue description

Since updating from 3.1 to 3.3, can no longer see network usage (counters) on eth0, values are just 0.

Steps to reproduce

lxc info ct1

user@server:~$ lxc info ct1
Name: ct1
Remote: unix://
Architecture: x86_64
Created: 2018/07/23 17:35 UTC
Status: Running
Type: persistent
Profiles: default
Pid: 2992
Ips:
  eth0: inet    10.0.0.148  vethWQOR8X
  eth0: inet6   fe80::216:3eff:fe37:e6b vethWQOR8X
  lo:   inet    127.0.0.1
  lo:   inet6   ::1
Resources:
  Processes: 91
  CPU usage:
    CPU usage (in seconds): 16
  Memory usage:
    Memory (current): 507.60MB
    Memory (peak): 516.69MB
  Network usage:
    eth0:
      Bytes received: 0B
      Bytes sent: 0B
      Packets received: 0
      Packets sent: 0
    lo:
      Bytes received: 28.25kB
      Bytes sent: 28.25kB
      Packets received: 390
      Packets sent: 390

Same with lxc query output:

lxc query -X GET /1.0/containers/ct1/state

{
    "cpu": {
        "usage": 16660715393
    },
    "disk": {},
    "memory": {
        "swap_usage": 0,
        "swap_usage_peak": 0,
        "usage": 508026880,
        "usage_peak": 516694016
    },
    "network": {
        "eth0": {
            "addresses": [
                {
                    "address": "10.0.0.148",
                    "family": "inet",
                    "netmask": "24",
                    "scope": "global"
                },
                {
                    "address": "fe80::216:3eff:fe37:e6b",
                    "family": "inet6",
                    "netmask": "64",
                    "scope": "link"
                }
            ],
            "counters": {
                "bytes_received": 0,
                "bytes_sent": 0,
                "packets_received": 0,
                "packets_sent": 0
            },
            "host_name": "vethWQOR8X",
            "hwaddr": "00:16:3e:37:0e:6b",
            "mtu": 1500,
            "state": "up",
            "type": "broadcast"
        },
        "lo": {
            "addresses": [
                {
                    "address": "127.0.0.1",
                    "family": "inet",
                    "netmask": "8",
                    "scope": "local"
                },
                {
                    "address": "::1",
                    "family": "inet6",
                    "netmask": "128",
                    "scope": "local"
                }
            ],
            "counters": {
                "bytes_received": 28255,
                "bytes_sent": 28255,
                "packets_received": 390,
                "packets_sent": 390
            },
            "host_name": "",
            "hwaddr": "",
            "mtu": 65536,
            "state": "up",
            "type": "loopback"
        }
    },
    "pid": 2992,
    "processes": 91,
    "status": "Running",
    "status_code": 103
}

[stgraber]

Looking into that one now.

[stgraber]

tracked it down, going to figure out the best way to fix it