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    New Rust Xen guest tools

    Scheduled Pinned Locked Moved Development
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    • DustyArmstrongD Offline
      DustyArmstrong @dClauzel
      last edited by

      Testing the agent out on Arch Linux (mainly due to the spotty 'support' in the AUR/generally) and it is working fine - better than what I had before (which did not report VM info properly). I've set it up as a systemd service to replace the previous one I had, also working as expected.

      This would be fun to contribute towards.

      1 Reply Last reply Reply Quote 1
      • Tristis OrisT Offline
        Tristis Oris Top contributor
        last edited by

        Not sure is it an issue. Agent itself is working.

        Welcome to Ubuntu 24.04.3 LTS (GNU/Linux 6.14.0-37-generic x86_64)

        systemctl status xen-guest-agent
● xen-guest-agent.service - Xen guest agent
     Loaded: loaded (/usr/lib/systemd/system/xen-guest-agent.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-02-09 14:28:41 MSK; 36min ago
   Main PID: 959 (xen-guest-agent)
      Tasks: 17 (limit: 19041)
     Memory: 4.8M (peak: 6.7M)
        CPU: 76ms
     CGroup: /system.slice/xen-guest-agent.service
             └─959 /usr/sbin/xen-guest-agent

Feb 09 14:28:41 oris systemd[1]: Started xen-guest-agent.service - Xen guest agent.
Feb 09 14:28:41 oris xen-guest-agent[959]: cannot parse yet os version Custom("24.04")

        Welcome to Ubuntu 24.04.3 LTS (GNU/Linux 6.17.0-14-generic x86_64)

        systemctl status xen-guest-agent
● xen-guest-agent.service - Xen guest agent
     Loaded: loaded (/usr/lib/systemd/system/xen-guest-agent.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-02-09 15:04:31 MSK; 1s ago
   Main PID: 9058 (xen-guest-agent)
      Tasks: 17 (limit: 76999)
     Memory: 2.5M (peak: 4.7M)
        CPU: 32ms
     CGroup: /system.slice/xen-guest-agent.service
             └─9058 /usr/sbin/xen-guest-agent

Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
        J 1 Reply Last reply Reply Quote 0
        • olivierlambertO Online
          olivierlambert Vates 🪐 Co-Founder CEO
          last edited by

          Question for @yann or @teddyastie I assume

          1 Reply Last reply Reply Quote 0
          • J Offline
            john.c @Tristis Oris
            last edited by

            @Tristis-Oris said in New Rust Xen guest tools:

            Not sure is it an issue. Agent itself is working.

            Welcome to Ubuntu 24.04.3 LTS (GNU/Linux 6.14.0-37-generic x86_64)

            systemctl status xen-guest-agent
● xen-guest-agent.service - Xen guest agent
     Loaded: loaded (/usr/lib/systemd/system/xen-guest-agent.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-02-09 14:28:41 MSK; 36min ago
   Main PID: 959 (xen-guest-agent)
      Tasks: 17 (limit: 19041)
     Memory: 4.8M (peak: 6.7M)
        CPU: 76ms
     CGroup: /system.slice/xen-guest-agent.service
             └─959 /usr/sbin/xen-guest-agent

Feb 09 14:28:41 oris systemd[1]: Started xen-guest-agent.service - Xen guest agent.
Feb 09 14:28:41 oris xen-guest-agent[959]: cannot parse yet os version Custom("24.04")

            Welcome to Ubuntu 24.04.3 LTS (GNU/Linux 6.17.0-14-generic x86_64)

            systemctl status xen-guest-agent
● xen-guest-agent.service - Xen guest agent
     Loaded: loaded (/usr/lib/systemd/system/xen-guest-agent.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-02-09 15:04:31 MSK; 1s ago
   Main PID: 9058 (xen-guest-agent)
      Tasks: 17 (limit: 76999)
     Memory: 2.5M (peak: 4.7M)
        CPU: 32ms
     CGroup: /system.slice/xen-guest-agent.service
             └─9058 /usr/sbin/xen-guest-agent

Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240
Feb 09 15:04:31 k3s xen-guest-agent[9058]: Specified IFLA_INET6_CONF NLA attribute holds more(most likely new kernel) data which is unknown to netlink-packet-route crate, expecting 236, got 240

            Is this a graphical (desktop) based VM running the agent?

            @olivierlambert If his VM is a desktop graphical Ubuntu then, it’s Kernel will be regularly updated with each new standard lifecycle point be an upgraded HWE kernel. So will be frequently getting this message, new info in the kernel. HWE kernels are default in modern Ubuntu desktop environments!

            Tristis OrisT 1 Reply Last reply Reply Quote 0
            • Tristis OrisT Offline
              Tristis Oris Top contributor @john.c
              last edited by

              @john.c server, no UI.

              yannY 1 Reply Last reply Reply Quote 0
              • yannY Offline
                yann Vates 🪐 XCP-ng Team @Tristis Oris
                last edited by

                @Tristis-Oris yes it is likely you're using a newer kernel, we likely need to rebuild the agent using a newer version of the netlink crate.

                1 Reply Last reply Reply Quote 1
                • A Offline
                  Andrew Top contributor @olivierlambert
                  last edited by

                  @olivierlambert Error causes tools to fail to load... >256 IP addresses on an interface (IPv4 and IPv6):

                  xen-guest-agent[514]: Error: Custom { kind: OutOfMemory, error: "no free slot for a new IP address" }

                  Best is to account for all the IP addresses.... second best is to ignore the extra IP addresses and not fail and exit.

                  yannY 1 Reply Last reply Reply Quote 0
                  • olivierlambertO Online
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    Ping @teddyastie

                    1 Reply Last reply Reply Quote 0
                    • yannY Offline
                      yann Vates 🪐 XCP-ng Team @Andrew
                      last edited by

                      HI @andrew,

                      Thanks for the report. Would you mind opening an issue in https://gitlab.com/xen-project/xen-guest-agent/-/work_items?

                      A 1 Reply Last reply Reply Quote 0
                      • A Offline
                        Andrew Top contributor @yann
                        last edited by

                        @yann Item Opened on Gitlab.

                        1 Reply Last reply Reply Quote 1

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