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    XCP-ng 7.6 RC1 available

    Scheduled Pinned Locked Moved Development
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    • C Offline
      conradical
      last edited by

      I haven't seen much, but I am curious about my post earlier about xcp-emu-manager, I see emu-manager referenced in the logs and was curious if xcp-emu-manager should be referenced.

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      • rizaemet 0R Offline
        rizaemet 0
        last edited by

        I did a test. Tried a storage live migrate on a vm which have one sanpshot. And cause this migrate problem. stack in 99%.
        Then I delete snapshot of this vm and wait coalesce process. then tried again storage live migrate. Successfull.
        I did this test on same vm. so, for now I think problem source is look like snapshot. I will do more test.

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

          On 7.6, right?

          rizaemet 0R 1 Reply Last reply Reply Quote 0
          • rizaemet 0R Offline
            rizaemet 0 @olivierlambert
            last edited by rizaemet 0

            @olivierlambert Sorry, maybe not right topic for this issue but my xcp-ng is 7.5

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

              Okay so it's not the right topic indeed, but I really want to know if you still have these issues on 7.6 RC 🙂

              rizaemet 0R 1 Reply Last reply Reply Quote 0
              • rizaemet 0R Offline
                rizaemet 0 @olivierlambert
                last edited by

                @olivierlambert I will try and will post result

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

                  Thanks a lot! It's important to test between 2x 7.6 hosts, to be sure it's still an issue and not a problem from another version in the middle 🙂

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                  • C Offline
                    conradical
                    last edited by conradical

                    @olivierlambert said in XCP-ng 7.6 RC1 available:

                    o test between 2x 7.6 hosts, to be sure it's still an issue and n

                    Mine is between multiple 7.6 hosts. PV tools, no PV tools, linux, windows. It all does it.

                    rizaemet 0R 1 Reply Last reply Reply Quote 0
                    • rizaemet 0R Offline
                      rizaemet 0 @conradical
                      last edited by

                      @conradical vm have any snapshot what you try to migrate? is this storage live migrate or vm live migrate?

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                      • C Offline
                        conradical @rizaemet 0
                        last edited by

                        @rizaemet-0
                        No snapshots. It happens on both storage migrate and love migrate.

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

                          Any activity in the VM or it's idle?

                          Are they in the same pool?

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                          • C Offline
                            conradical @olivierlambert
                            last edited by

                            @olivierlambert
                            Same Pool. It does not seem to matter if it is idle or not.

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                            • C Offline
                              conradical
                              last edited by

                              Interesting update: I installed the latest PV tools by enabling window update, this fixed 4 out of my 5 test VMs running windows. More testing is underway with linux PV and HVM.

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

                                That's maybe the reason why I can't reproduce. It's like old tools will lead to migration problems but not more recent ones 😕

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                                • C Offline
                                  conradical @olivierlambert
                                  last edited by

                                  @olivierlambert said in XCP-ng 7.6 RC1 available:

                                  That's maybe the reason why I can't reproduce. It's like old tools will lead to migration problems but not more recent ones 😕

                                  HVM also have migration problems.

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

                                    I'm testing with PVHVM guests, I can't reproduce since I got latest tools installed 😞

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                                    • K Offline
                                      KFC-Netearth
                                      last edited by borzel

                                      I don't know if this helps but I have also been doing some test on 7.5 and it looks like VMs that are using a large percentage of their memory have problems migrating.
                                      eg Centos 7 HVM with Atlassian bitbucket java process using about 80%
                                      From top:

                                      PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND 
                                       1874 atlbitb+  20   0 3695600   1.3g   6440 S   0.3 42.8   0:52.40 java                 
                                       1891 atlbitb+  20   0 4154320   1.1g   8124 S   1.3 36.5   6:40.68 java     
                                      

                                      Live migration stops at 99% and stays there till you cancel the migration and I have seen it go to 100% and the VM crash.
                                      You then need to restart the toolstack on the receiving server or
                                      /var/log/xcp-rrdd-plugins.log
                                      fills up with these messages

                                       xcp-rrdd-squeezed: [ warn|xen1-3|0 ||rrdd-plugins] Couldn't find cached dynamic-max value for domain 66, using 0
                                      

                                      Shut down the 2 java processes and it migrates OK.

                                      I have also seen the same problem with migration of virtual disks between iSCSI SRs

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                                      • borzelB Offline
                                        borzel XCP-ng Center Team @KFC-Netearth
                                        last edited by

                                        @KFC-Netearth edited your post to see the top output better

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

                                          @KFC-Netearth That's really interesting. Do you have the latest tools version installed in your VM?

                                          edit: I'll try to use 80%+ RAM on a test VM and see if it triggers the problem 🙂

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                                          • K Offline
                                            KFC-Netearth
                                            last edited by

                                            I have this version of the guest-tools on the VM
                                            #rpm -aq|grep xen
                                            xe-guest-utilities-xenstore-7.10.0-1.x86_64

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