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    XCP-ng 8.0.0 Beta now available!

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    • A Offline
      AllooTikeeChaat @stormi
      last edited by AllooTikeeChaat

      @stormi yum clean all worked. Installed aok and modprobe zfs doesn't complain so that's all good.

      A repair of the ZFS SR fails with the same error and "zpool status: no pools available" and "zfs list no datasets available".

      I'll open a new post if I can't get it working rather than replying to this one.

      Update: fixed the issue ..

      bad2f941-78f1-482b-ae10-a663b4a01928-image.png

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

        Which was? (the issue)

        A 1 Reply Last reply Reply Quote 0
        • A Offline
          AllooTikeeChaat @olivierlambert
          last edited by

          @olivierlambert
          (1) Missing the ZFS packages from the base install.
          (2) Needed a "yum clean all" to be able to install zfs packages.
          (3) Needed to manually import the ZFS zpool

          I'm a noob with zfs so had to work out how to import an existing zpool and once thats done it can be repaired/mounted.

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

            Good 🙂 So now you are on ZoL 0.8, no need to disable sync anymore 🙂

            A 1 Reply Last reply Reply Quote 0
            • A Offline
              AllooTikeeChaat @olivierlambert
              last edited by

              @olivierlambert
              I'm assuming that sync is enabled by default ?

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

                Yup, but before (0.8) it wasn't good for performances, at all, due to cache poisoning (no O_DIRECT support).

                1 Reply Last reply Reply Quote 1
                • C Offline
                  cocoon XCP-ng Center Team
                  last edited by

                  Any chance to get a newer lsblk that supports json output?
                  Would be great for plugins and would make parsing output much easier.

                  Currently installed on XCP-ng 8 beta: util-linux-2.23.2-52.el7_5.1.x86_64

                  (something later than v2.27?)
                  https://git.devuan.org/CenturionDan/util-linux/commit/4a102a4871fdb415f4de5af9ffb7a2fb8926b5d1

                  ... ah forget it, I see, CentOS is using the old versions since long time ...

                  stormiS 1 Reply Last reply Reply Quote 0
                  • stormiS Offline
                    stormi Vates 🪐 XCP-ng Team @cocoon
                    last edited by

                    @cocoon said in XCP-ng 8.0.0 Beta now available!:

                    ... ah forget it, I see, CentOS is using the old versions since long time ...

                    Yeah the chances that we'd change the version of such a low level package just for added functionality are very low.

                    C 1 Reply Last reply Reply Quote 0
                    • C Offline
                      cocoon XCP-ng Center Team @stormi
                      last edited by

                      @stormi yes and I totally understand that ... I just thought at first, it is so old, there must be something new if CentOS 7.5 is new ... but no 😕

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                      • akurzawaA Offline
                        akurzawa
                        last edited by

                        hi

                        Is this possible to install xcp-ng in xcp-ng just for tests?

                        borzelB 1 Reply Last reply Reply Quote 0
                        • ruskofdR Offline
                          ruskofd
                          last edited by

                          Sure you need to enable Nested Virtualization when you create your VM and that's it.

                          1 Reply Last reply Reply Quote 0
                          • borzelB Offline
                            borzel XCP-ng Center Team @akurzawa
                            last edited by

                            @akurzawa https://github.com/xcp-ng/xcp/wiki/Testing-XCP-ng-in-Virtual-Machine-(Nested-Virtualization)

                            1 Reply Last reply Reply Quote 1
                            • ruskofdR Offline
                              ruskofd
                              last edited by

                              Just updated my homelab server from XCP-ng 7.6 to XCP-ng 8.0 Beta, so far so good. I also tested the new experimental UEFI mode with Windows VM, seems good too.

                              I also tested the new XOA deployment through the Web interface of my host, perfect !

                              We will see during the following week how it goes 😉

                              1 Reply Last reply Reply Quote 1
                              • P Offline
                                peder
                                last edited by

                                It does NOT work to migrate a paravirtualized (PV) CentOS6 machine or a PVHVM CentOS7 between two "servers" with Core i3-3110M CPUs in 8.0beta.
                                C6 throws a "xenopsd, error from emu-manager: Invalid argument" and C7 "xenopsd, error from emu-manager: xenguest Invalid argument".

                                It works on the exact same hardware in 7.6 so that seems to be a new "unsupported old CPU" limitation, unless it's a proper bug in 8.0b.

                                I can migrate a Fedora28 (HVM) on that hardware in 8.0b so it appears to depend on what virtualization method the machine uses.

                                stormiS 1 Reply Last reply Reply Quote 0
                                • stormiS Offline
                                  stormi Vates 🪐 XCP-ng Team @peder
                                  last edited by

                                  @peder Thanks for testing. It confirms our recent findings related to PV guests indeed! We're working on it and will post here once it's fixed.

                                  P 1 Reply Last reply Reply Quote 1
                                  • P Offline
                                    peder @stormi
                                    last edited by

                                    @stormi Nice to hear, thanks!

                                    1 Reply Last reply Reply Quote 0
                                    • ronan-aR Offline
                                      ronan-a Vates 🪐 XCP-ng Team
                                      last edited by ronan-a

                                      @peder Fixed! This fix will be available (as soon as possible) in a future xcp-emu-manager package.

                                      1 Reply Last reply Reply Quote 2
                                      • stormiS Offline
                                        stormi Vates 🪐 XCP-ng Team
                                        last edited by

                                        I have updated https://github.com/xcp-ng/xcp/wiki/Test-XCP with lots of new tests for those who need ideas 🙂

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                                        • s_mcleodS Offline
                                          s_mcleod
                                          last edited by s_mcleod

                                          Just FYI - I have performed CPU and PGBench benchmarks on XCP-ng 8 beta 1, both with Hyperthreading enabled and disabled when running two identical VMs under different types of low, medium and heavy CPU load.

                                          Results are available here: https://github.com/sammcj/benchmark_results/tree/master/xcpng/8/hyperthreading_impact

                                          TLDR;

                                          • Significant performance decrease (38.7725%) when running multithreaded Sysbench CPU benchmarks in parallel on two VMs when hyperthreading is disabled.

                                          • Significant performance decrease (16.96%) when running PGBench under 'normal' load benchmarks in parallel on two VMs when hyperthreading is disabled.

                                          • No significant performance decrease when running Phoronix Test Suite's Pybench and OpenSSL benchmarks in parallel on two VMs when hyperthreading is disabled.

                                          MajorTomM 1 Reply Last reply Reply Quote 1
                                          • stormiS Offline
                                            stormi Vates 🪐 XCP-ng Team
                                            last edited by

                                            yum update will now install the latest xcp-ng-emu-manager that fixes the PV guest migration and brings better debug traces in case of crash of the emu-manager binary. We'd be interested if anyone managed to make a migration fail.

                                            Testing ideas still at https://github.com/xcp-ng/xcp/wiki/Test-XCP

                                            P 1 Reply Last reply Reply Quote 1
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