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    UEFI Firmware not supported

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    • DanpD Offline
      Danp Pro Support Team
      last edited by

      Hi Andrew,

      This feature was added last month, and it appears to be using settings from the template to make this determination. Which template(s) are these VMs using? Can you show us the output of xe template-param-list uuid=<Template-UUID> where you replace <Template-UUID> with the actual UUID of one of the templates involved.

      Regards,
      Dan

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

        @Danp I did not know it was just reporting what was in the template. I thought it actually looked for the UEFI boot volume.

        The Debian Bookworm 12 template contains: recommendations ( RO): <restriction field="supports-uefi" value="no"/>

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        • Tristis OrisT Offline
          Tristis Oris Top contributor
          last edited by Tristis Oris

          Few months ago i created test VMs with uefi without any erors.
          But now all of them show same error on both 8.2 8.3. Doesn't matter which template - ubuntu, centos, oracle, alma, etc.

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          • stormiS Offline
            stormi Vates 🪐 XCP-ng Team
            last edited by

            You can ignore the warning. We added a feature so that you are warned when trying to enable legacy bios on an OS which doesn't support it, for example Windows 11, but it also started giving warning in the other direction, when uefi is chosen on a template which says it doesn't support it. Why the templates say they don't support UEFI, I think it comes initially from decisions at XenServer, because they didn't extensively test these OSes, but we know that any recent Linux supports UEFI and this works well in XCP-ng.

            F 1 Reply Last reply Reply Quote 2
            • F Offline
              ferrao @stormi
              last edited by

              @stormi is there any benefit in using those templates instead of just using Other Install Media, that allows UEFI and UEFI secure boot?

              stormiS K 2 Replies Last reply Reply Quote 0
              • stormiS Offline
                stormi Vates 🪐 XCP-ng Team @ferrao
                last edited by

                @ferrao Yes, they usually have better defaults for the target OS.

                1 Reply Last reply Reply Quote 0
                • K Offline
                  KPS Top contributor @ferrao
                  last edited by

                  @ferrao
                  There is another thread about bad performance of migrated VMs, where the main reason was/is, that the wrong template was active which did lead to a degraded performance.

                  F 1 Reply Last reply Reply Quote 1
                  • F Offline
                    ferrao @KPS
                    last edited by

                    @KPS @stormi may I ask another question:

                    Yes I do see thats some settings when I ask for the profile using xe:

                    [15:19 xen1 ~]# xe template-param-list uuid=6c91b878-5095-421e-a914-224b3bb1088c 
                    uuid ( RO)                                  : 6c91b878-5095-421e-a914-224b3bb1088c
                                                name-label ( RW): Red Hat Enterprise Linux 9
                                          name-description ( RW): To use this template from the CLI, install your VM using vm-install, then set other-config-install-repository to the path to your network repository, e.g. http://<server>/<path> or nfs:server:/<path>
                                              user-version ( RW): 1
                                             is-a-template ( RW): true
                                       is-default-template ( RW): true
                                             is-a-snapshot ( RO): false
                                               snapshot-of ( RO): <not in database>
                                                 snapshots ( RO): 
                                             snapshot-time ( RO): 19700101T00:00:00Z
                                             snapshot-info ( RO): 
                                                    parent ( RO): <not in database>
                                                  children ( RO): 
                                         is-control-domain ( RO): false
                                               power-state ( RO): halted
                                             memory-actual ( RO): 0
                                             memory-target ( RO): 0
                                           memory-overhead ( RO): 36700160
                                         memory-static-max ( RW): 4294967296
                                        memory-dynamic-max ( RW): 4294967296
                                        memory-dynamic-min ( RW): 4294967296
                                         memory-static-min ( RW): 2147483648
                                          suspend-VDI-uuid ( RW): <not in database>
                                           suspend-SR-uuid ( RW): <not in database>
                                              VCPUs-params (MRW): 
                                                 VCPUs-max ( RW): 1
                                          VCPUs-at-startup ( RW): 1
                                    actions-after-shutdown ( RW): Destroy
                                      actions-after-reboot ( RW): Restart
                                       actions-after-crash ( RW): Restart
                                             console-uuids (SRO): 
                                                       hvm ( RO): false
                                                  platform (MRW): videoram: 8; hpet: true; secureboot: false; device-model: qemu-upstream-compat; apic: true; device_id: 0001; vga: std; nx: true; pae: true; viridian: false; acpi: 1
                                        allowed-operations (SRO): changing_NVRAM; changing_dynamic_range; changing_shadow_memory; changing_static_range; provision; export; clone; copy
                                        current-operations (SRO): 
                                        blocked-operations (MRW): 
                                       allowed-VBD-devices (SRO): 0; 1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72; 73; 74; 75; 76; 77; 78; 79; 80; 81; 82; 83; 84; 85; 86; 87; 88; 89; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99; 100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 120; 121; 122; 123; 124; 125; 126; 127; 128; 129; 130; 131; 132; 133; 134; 135; 136; 137; 138; 139; 140; 141; 142; 143; 144; 145; 146; 147; 148; 149; 150; 151; 152; 153; 154; 155; 156; 157; 158; 159; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 170; 171; 172; 173; 174; 175; 176; 177; 178; 179; 180; 181; 182; 183; 184; 185; 186; 187; 188; 189; 190; 191; 192; 193; 194; 195; 196; 197; 198; 199; 200; 201; 202; 203; 204; 205; 206; 207; 208; 209; 210; 211; 212; 213; 214; 215; 216; 217; 218; 219; 220; 221; 222; 223; 224; 225; 226; 227; 228; 229; 230; 231; 232; 233; 234; 235; 236; 237; 238; 239; 240; 241; 242; 243; 244; 245; 246; 247; 248; 249; 250; 251; 252; 253; 254
                                       allowed-VIF-devices (SRO): 0; 1; 2; 3; 4; 5; 6
                                            possible-hosts ( RO): e49f21ab-723c-472e-8ad2-46c169e31172; 488e0f1d-69f3-4ecb-a37b-b5328764c229; f6d05b66-a21b-49bc-ad57-b4ca9bad756f
                                               domain-type ( RW): hvm
                                       current-domain-type ( RO): unspecified
                                           HVM-boot-policy ( RW): BIOS order
                                           HVM-boot-params (MRW): firmware: bios; order: cdn
                                     HVM-shadow-multiplier ( RW): 1.000
                                                 PV-kernel ( RW): 
                                                PV-ramdisk ( RW): 
                                                   PV-args ( RW): 
                                            PV-legacy-args ( RW): 
                                             PV-bootloader ( RW): 
                                        PV-bootloader-args ( RW): 
                                       last-boot-CPU-flags ( RO): 
                                          last-boot-record ( RO): ''
                                               resident-on ( RO): <not in database>
                                                  affinity ( RW): <not in database>
                                              other-config (MRW): default_template: true; import_task: OpaqueRef:5bfca08c-951b-4024-a329-60260d8936fe; mac_seed: 99974ea1-478b-426d-b483-960e65912bd8; disks: <provision><disk bootable="true" device="0" size="10737418240" sr="" type="system"/></provision>; install-methods: cdrom,nfs,http,ftp; linux_template: true
                                                    dom-id ( RO): -1
                                           recommendations ( RO): <restrictions><restriction field="memory-static-max" max="1649267441664"/><restriction field="vcpus-max" max="32"/><restriction field="has-vendor-device" value="false"/><restriction field="allow-gpu-passthrough" value="1"/><restriction field="allow-vgpu" value="1"/><restriction field="allow-network-sriov" value="1"/><restriction field="supports-bios" value="yes"/><restriction field="supports-uefi" value="no"/><restriction field="supports-secure-boot" value="no"/><restriction max="255" property="number-of-vbds"/><restriction max="7" property="number-of-vifs"/></restrictions>
                                             xenstore-data (MRW): 
                                ha-always-run ( RW) [DEPRECATED]: false
                                       ha-restart-priority ( RW): 
                                                     blobs ( RO): 
                                                start-time ( RO): 19700101T00:00:00Z
                                              install-time ( RO): 19700101T00:00:00Z
                                              VCPUs-number ( RO): 0
                                         VCPUs-utilisation (MRO): 
                                                os-version (MRO): <not in database>
                                        PV-drivers-version (MRO): <not in database>
                        PV-drivers-up-to-date ( RO) [DEPRECATED]: <not in database>
                                                    memory (MRO): <not in database>
                                                     disks (MRO): <not in database>
                                                      VBDs (SRO): 
                                                  networks (MRO): <not in database>
                                       PV-drivers-detected ( RO): <not in database>
                                                     other (MRO): <not in database>
                                                      live ( RO): <not in database>
                                guest-metrics-last-updated ( RO): <not in database>
                                       can-use-hotplug-vbd ( RO): <not in database>
                                       can-use-hotplug-vif ( RO): <not in database>
                                  cooperative ( RO) [DEPRECATED]: true
                                                      tags (SRW): 
                                                 appliance ( RW): <not in database>
                                         snapshot-schedule ( RW): <not in database>
                                          is-vmss-snapshot ( RO): false
                                               start-delay ( RW): 0
                                            shutdown-delay ( RW): 0
                                                     order ( RW): 0
                                                   version ( RO): 1
                                             generation-id ( RO): 
                                 hardware-platform-version ( RO): 0
                                         has-vendor-device ( RW): false
                                           requires-reboot ( RO): false
                                           reference-label ( RO): rhel-9
                                              bios-strings (MRO): 
                    

                    That's a lot of things.

                    The questions would be:

                    1. Is there a way to create another template that will inherit from the base template just to modify the UEFI support? Because let's be honest, it's 2024 and I don't feel like using legacy BIOS even for VMs... And when I mean inherit is that if something changes on the template it will be automatically changed on the inherited one. I'm aware that I can just clone/copy the template and modify but this will eventually lose updates to the base template.

                    2. Does XOA (the paid version) have more up to date templates with, for example, UEFI support for Linux? FreeBSD, etc?

                    Thank you all guys.

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                    • stormiS Offline
                      stormi Vates 🪐 XCP-ng Team
                      last edited by stormi

                      UEFI is supported for Linux already. It also works for FreeBSD, as far as I remember (but there are no official FreeBSD templates). Don't trust what XO or the templates say about UEFI support, until they have fixed the UI regression. Some template fields are legacy and not to be trusted, and this is one of them.

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                      • stormiS Offline
                        stormi Vates 🪐 XCP-ng Team
                        last edited by

                        Regarding how to inherit an existing template, I don't know if it is doable at the user level. Default templates are created in a way where they inherit from higher level templates, but that's before they become template objectifs in XAPI, so it's probably different for user templates.

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                        • F Offline
                          ferrao @stormi
                          last edited by ferrao

                          @stormi Thanks @stormi.

                          I have to get used to XO. I always use XCP-ng Admin on Windows because old habits die hard, and there I cannot even select UEFI with all the Linux templates.

                          The magic that XO does is that it allows to use the templates, but with UEFI.

                          I have a VM that I've deployed with the "Other install media" option, so I just dettached the disk and reimported on the new one created by XO, with the correct template. Everything seems fine.

                          So my question about inheriting the template is not relevant if we use XO. Hope my understand is correct.

                          Thanks.

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