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    XCP-ng 8.0.0 Beta now available!

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

      Can you provide the full VM record of the problematic one? with

      vm param-list uuid=<YOUR FAILING VM UUID>

      Also the same with the one now working, so I can compare.

      P 1 Reply Last reply Reply Quote 0
      • P Offline
        peder @olivierlambert
        last edited by

        @olivierlambert Sure.
        I've put the param-list logs as well as the VMs (sans the Disk) on https://student.oedu.se/~peder/xcp-ng/

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

          So I imported your VM metadata in my lab pool, attached to a VM disk with Debian (so we don't really care about the OS) and it worked 😆

          I also attached a disk of a previously working CentOS 7 VM, same thing: migration worked 🐹

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          • P Offline
            peder
            last edited by

            Weird.

            Maybe it's due to the hardware I'm using. I only have 8 GB RAM in the servers but the migration fails even if I'm not running any other VM.
            And since it works if static max=dynamic max it shouldn't be a RAM case either.

            Unless the migration for some reason tries to allocate 2-3 times the amount of RAM if static and dynamic max differ.

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            • s_mcleodS Offline
              s_mcleod @MajorTom
              last edited by

              @MajorTom Sorry about that I've been (and still am AFK):

              Corrected link: https://github.com/sammcj/benchmark_results/blob/master/xcpng/8/hyperthreading_impact/test_2_sysbench_prime.md

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              • A Offline
                AllooTikeeChaat
                last edited by AllooTikeeChaat

                Folks... was at Citrix event today and the morning was a talk by LoginVSI looking at the impact of the latest security patches for Intel CPU's and the performance impact server on EUC work loads and server scalebility on the Hypervisors. According to the presenter all the Hypervisors (Hyper-V, VMware ESX and XenServer) that they were testing were seeing approx 20-25% decrease in performance when using Intel based systems. What I found interesting was VMware has developed a new scheduler, SCAv2 to help reduce the impact although no numbers where mentioned. There was no mention of anything of th sort for XenServer or HyperV.

                https://blogs.vmware.com/performance/2019/05/new-scheduler-option-for-vsphere-6-7-u2.html

                According to that blog post .. the impact using the SCAv2 was reduced to 11%.

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

                  This will come in Xen. In fact, work already started. It's called "core scheduling", and this is the preliminary work before sync scheduling, which is a perfect solution (better perfs AND better security) against Intel CPU flaws.

                  Source: https://lists.xenproject.org/archives/html/xen-devel/2019-05/msg00370.html

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                  • A Offline
                    AllooTikeeChaat @olivierlambert
                    last edited by

                    @olivierlambert

                    Good to know that they're already working on it for Xen. Surprised that none of the Citrix bod's at the event mentioned it. Looks like the best way to do get around the massive performance hit without switching to AMD !

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

                      @AllooTikeeChaat I'm always stunned by the fact Citrix communication on Xen is equal to /dev/null, despite all the great efforts made by the Xen devs (half of them are from Citrix!)

                      So as I said, it's not there yet, but it's going into that direction pretty well, I would expect this stuff to be backported in the future I suppose, because it's really powerful!

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                      • D Offline
                        dariosplit
                        last edited by

                        When will the final version of XCP-ng 8.0.0. be available?

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

                          This will depend a bit on community feedback: more feedback means faster release 🙂

                          s_mcleodS 1 Reply Last reply Reply Quote 1
                          • s_mcleodS Offline
                            s_mcleod @olivierlambert
                            last edited by

                            @olivierlambert I’m sorry I’m not more available to bring more testing to the table this week, I am AFK.

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

                              No worries mate! To give a more precise answer, we might target a RC for the end of the month, maybe sooner, IDK yet.

                              Then if there is no big issue spotted with the RC, release will come near after 🙂

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                              • P Offline
                                peder
                                last edited by

                                Connecting an iSCSI SR in xsconsole fails if there's a discovery password.
                                It works if I disable the authentication.

                                It works in XenOrchestra if I attach it as a new SR (With auth) AND have the same discovery username and password in the ACL of the iqn.
                                That still doesn't work in xsconsole.

                                My iscsi server uses targetcli-fb/LIO.

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

                                  Is it something broken before? Because I don't think we ever touched xsconsole outside colors

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                                  • s_mcleodS Offline
                                    s_mcleod
                                    last edited by

                                    I’ve fairly certain I’ve had this problem since xenserver 6.x

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

                                      Okay so this issue could be opened somewhere, but IMHO it shouldn't be a blocker for the release 🙂

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                                      • P Offline
                                        peder
                                        last edited by

                                        I used tgt and no authentication before so I can't say.
                                        I decided to try targetcli and authentication when I installed 8 beta.

                                        No, it's probably not a blocker.

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                                        • apayneA Offline
                                          apayne @olivierlambert
                                          last edited by

                                          @olivierlambert Go figure - just two days after that posting, my creaky old HP DL365 Gen1 up and died. CPU 1 memory bank shows a solid set of lights for RAM sockets, i.e. the memory controller can't access RAM. Bummer.

                                          My wife took pity on me - or got me a father's day gift, depending on your point of view - and sprung for a Dell R815, which is supported. Of course, I gave the 8.0 beta a spin.

                                          Installation was slightly faster, but there have been a few minor quirks along the way:

                                          • The USB key I stuck into the unit wasn't an option for the OS install, but did show up as an option when creating storage for VMs. No big deal, but still kinda strange.
                                          • Peeking at a different console via Alt-F2 and Alt-F3 showed some patches? And the kernel/dracut root/boot installation section took a loooong time to complete; everything else flew by. If it's downloading those patches that would explain the delay - the unit has a slow wifi bridge connection.

                                          Other than those, it seems fine. I'm still poking around it, getting a few for what's changed.

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

                                            @apayne I'm not aware of the installer being able to download patches from the internet. Can you create a tarball of /var/log/installer and make it available to me so that I check that?

                                            Not being able to install the system on usb key is a good thing: it is not recommended because it would wear out too quickly due to frequent writes.

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