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    XCP-ng 8.3 updates announcements and testing

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    • A Online
      Andrew Top contributor @rzr
      last edited by

      @rzr Updates running. VHD use only.

      1 Reply Last reply Reply Quote 3
      • B Offline
        bufanda
        last edited by

        Installed on my usual lab setup works fine so far although I have the "Fell back to full backup" message for qcow2 VMs

        A 1 Reply Last reply Reply Quote 3
        • A Offline
          acebmxer @bufanda
          last edited by

          @bufanda Make sure you have enable the purge snapshot when using CBT, if you are using CBT. After the previous update that fixed fell back to full backup issue for me..

          Maybe also try running a manual full backup to reset the VDI chain.

          Screenshot_20260425_071444.png

          B 1 Reply Last reply Reply Quote 1
          • A Offline
            acebmxer @rzr
            last edited by acebmxer

            @rzr

            One thing i am noticing after this updates. Is i am seeing alot more traffic on my truenas. The gaps are me shutting down vms and starting each one to find the problem vms but it seems to be any vm. I didnt notice any performance issues just noticed the graph in truenas when its usally flat line there the occasional spike here and there not the big mess to the left in first screenshot. 5 vms running

            My xoa is on local storage on master host. and used for these test.
            All vms are powered off except xoa and xo

            Screenshot_20260425_130107.png

            Here i booted the xo vm and left it idle. The spike after is me live migrate back to vhd SR and then left idle.

            Screenshot_20260425_135258-1.png

            The gap in the middle is xo idle on vhd only SR.
            Screenshot_20260425_135604.png

            live Migrate xo back to qcow2 only SR
            Screenshot_20260425_140908.png

            Migration back to qcow2 completed
            Screenshot_20260425_143122.png

            Left xo ldle after migration to qcow2 sr.
            Screenshot_20260425_144314.png

            Again all vms booted and idle....

            Screenshot_20260425_145451.png

            From master host.
            Screenshot_20260425_150320.png

            stormiS 1 Reply Last reply Reply Quote 2
            • B Offline
              bufanda @acebmxer
              last edited by

              @acebmxer purge snapshots is active since I created the backup job over a year ago. I always enable purge snapshots on backup jobs.

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

                @bufanda I'm being told it's expected to have it the first time after the update, but in theory the next ones should be not be fulls. Can you try?

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

                  @acebmxer with qcow2, the way we scan the SR regularly uses more I/O, so this may explain it.

                  A 1 Reply Last reply Reply Quote 0
                  • A Offline
                    acebmxer @stormi
                    last edited by

                    @stormi said:

                    @acebmxer with qcow2, the way we scan the SR regularly uses more I/O, so this may explain it.

                    Thanks for the update, that this is expected. I think it its a bit a excessive being its only 4 -5 vms.

                    stormiS 1 Reply Last reply Reply Quote 0
                    • B Offline
                      bufanda @stormi
                      last edited by

                      @stormi said:

                      @bufanda I'm being told it's expected to have it the first time after the update, but in theory the next ones should be not be fulls. Can you try?

                      Just checked and the VM I was testing with was part of two backups and it seems that when one runs and the second starts that it will fall back. I removed the VM now from one backup and with being only member of one backup job it looks good then. Will keep an eye on it.

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

                        @acebmxer Can you evaluate the amount of data transferred at each spike? So that we can evaluate if it's more than expected. What's the total size of the VM disks?

                        1 Reply Last reply Reply Quote 0

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