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    Getting MESSAGE_METHOD_UNKNOWN(VDI.get_cbt_enabled) with XenServer 7.1

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    • olivierlambertO Offline
      olivierlambert Vates 🪐 Co-Founder CEO
      last edited by olivierlambert

      Hi,

      You need to disable NBD on your networks. Check in your Pool/network.

      M 1 Reply Last reply Reply Quote 0
      • M Offline
        marcom @olivierlambert
        last edited by

        @olivierlambert Thanks a lot for your answer.
        May I ask you exactly where should I look for that option because for me is no clear.

        On XO under Pool->Network all the interfaces have the NBD disabled.
        On the Citrix APP I didn't find any opition and I had a look also on the Synology NAS that actually I'm using to test the backup and also there I didn't find the option.

        Sorry in advance if this is a stupid question

        Thanks a lot again!

        BR
        Marco

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        • olivierlambertO Offline
          olivierlambert Vates 🪐 Co-Founder CEO
          last edited by

          It's not ultra clear but here is a tricky example:

          ffa9e87c-114a-4981-9fcf-bccc766978d2-image.png

          Only one of this network has NBD enabled. To be sure you have 0 NBD, all the lines on all the pages MUST start with "No NBD".

          Then, double check your backup job: NBD must be disabled in the Advanced options.

          If, despite that, you still have the issue, does it prevent you to run a backup? If no, ignore it, otherwise, we'll have to make our code more robust 🙂

          M 1 Reply Last reply Reply Quote 0
          • M Offline
            marcom @olivierlambert
            last edited by

            @olivierlambert I did double check,

            Unfortunately I'm in the case where all the options are disabled and I also double checked my Backup Job, but this one already double checked
            yesterday and I can't ignore it because the Job fail.

            If you need more information or log to understand better, just let me know, I will be happy to share the info to improve the tool,

            BR
            Marco

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            • olivierlambertO Offline
              olivierlambert Vates 🪐 Co-Founder CEO
              last edited by

              I think the issue is clear. I created it: https://github.com/vatesfr/xen-orchestra/issues/7877

              If it's not too hard to prevent, we'll fix it. In any case, I suggest to upgrade to XCP-ng, your XS is EOL.

              olivierlambert created this issue in vatesfr/xen-orchestra

              closed Don't block VHD backup if CBT doesn't exist #7877

              M 1 Reply Last reply Reply Quote 0
              • M Offline
                marcom @olivierlambert
                last edited by

                @olivierlambert Yes I know, I'm evaluating several solution, also the Xen 8.2 and yours.

                I still don't have clear idea, I have to read more about your xcp-ng

                Thanks for the support

                BR
                Marco

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

                  On the technical side, upgrading to XS 7.1 to XCP-ng 8.2 will cost you exactly the same effort than upgrading from 7.1 to XS 8.2

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                  • nikadeN Offline
                    nikade Top contributor @marcom
                    last edited by

                    @marcom said in Getting MESSAGE_METHOD_UNKNOWN(VDI.get_cbt_enabled) with XenServer 7.1:

                    @olivierlambert Yes I know, I'm evaluating several solution, also the Xen 8.2 and yours.

                    I still don't have clear idea, I have to read more about your xcp-ng

                    Thanks for the support

                    BR
                    Marco

                    Do you currently pay for XenServer or are you using the free version?
                    XenServer and XCP-NG is pretty much the same and XCP-NG offers both a free version AND a paid version which includes support, XCP-NG also offers more features than XenServer and the migration would be rather easy since you are already using XenServer.

                    M 1 Reply Last reply Reply Quote 0
                    • M Offline
                      marcom @nikade
                      last edited by

                      @nikade Sorry for the late answer. At the moment running the free version, but I would like to switch to supported one, because we are a company and we want the systems and the support really reliable.

                      There is something interesting that attract me in the project. Maybe I will ask a demo to @olivierlambert to go deep in some aspects.

                      BR
                      Marco

                      nikadeN 1 Reply Last reply Reply Quote 0
                      • nikadeN Offline
                        nikade Top contributor @marcom
                        last edited by

                        @marcom said in Getting MESSAGE_METHOD_UNKNOWN(VDI.get_cbt_enabled) with XenServer 7.1:

                        @nikade Sorry for the late answer. At the moment running the free version, but I would like to switch to supported one, because we are a company and we want the systems and the support really reliable.

                        There is something interesting that attract me in the project. Maybe I will ask a demo to @olivierlambert to go deep in some aspects.

                        BR
                        Marco

                        I understand, I think you are correct about asking Vates for a presentation or a demo of some kind if you want to buy their supported product.

                        Remember that you can always setup a lab with the free/opensource version of XCP-NG 8.2.1 (8.3 will be released soon as well) and try stuff out.
                        The XCP-NG product is very much a like the XenServer product, but at the same time it is very different because of the enhancements made by Vates and the community.

                        M 1 Reply Last reply Reply Quote 0
                        • M Offline
                          marcom @nikade
                          last edited by

                          @nikade yes I will do.
                          Easy question. With Xen actually I use also the Windows APP Xen center to manage the pool.
                          With XCP-ng if I undestood correctly will be used Orchestra as management tool, right?

                          In that case would be better to have Orchestra as physical server outside the Hypervisor environment? or?

                          BR
                          Marco

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                          • olivierlambertO Offline
                            olivierlambert Vates 🪐 Co-Founder CEO
                            last edited by

                            Everything is possible, you can run XO on the production pool or anywhere else. It's up to you. Both solutions work fine.

                            M 1 Reply Last reply Reply Quote 1
                            • nikadeN Offline
                              nikade Top contributor
                              last edited by

                              I can only speak for myself, but we have always run it as a VM in the pool.
                              The VM itself will be migrated to a different host during maintenance, updates and so on as long as you have shared storage (iSCSI or NFS).

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                              • M Offline
                                marcom @olivierlambert
                                last edited by

                                mmm ok. Let's take an example. Full disaster recovery. I have my backups on the NAS but I lost everything and I have to install everything from scratch.
                                What are the steps I need to do? What I imagine is:

                                • reinstall the XCP-ng
                                • reinstall the Orchestra on it
                                • reconfigure the NAS on it

                                After that I can restore the metadata and backups, and also the shared storage will be reconfigured automatcally?

                                Are more or less those the steps?

                                BR
                                Marco

                                nick.lloydN 1 Reply Last reply Reply Quote 0
                                • nick.lloydN Offline
                                  nick.lloyd @marcom
                                  last edited by

                                  @marcom The only thing that I would add (and I'm guessing you knew, adding this just in case) is to restore the backup of XO(A) and the pool metadata.

                                  nikadeN 1 Reply Last reply Reply Quote 0
                                  • nikadeN Offline
                                    nikade Top contributor @nick.lloyd
                                    last edited by

                                    Exactly what @nick-lloyd said, it is important to backup XO configuration AND the pool metadata as well to be able to recovery completely.

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