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    Updated XOA with kernel >5.3 to support nconnect nfs option

    Scheduled Pinned Locked Moved Xen Orchestra
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    • florentF Offline
      florent Vates 🪐 XO Team @Forza
      last edited by

      @Forza said in Updated XOA with kernel >5.3 to support nconnect nfs option:

      @florent hi, for the full backup test above, I used normal mode with zstd enabled. There were no snapshots of the source VM and it was stored on local ssd storage on the pool master.

      can you test a backup on an empty remote with block mode ?

      M 1 Reply Last reply Reply Quote 0
      • M Offline
        manilx @florent
        last edited by

        @florent Did a test on my 8.3 homelab.
        Using XO on a Debian 12 VM.

        2 full (delta) backups using "nconnect=6" of all my 10 VM's

        With block defined at remote:
        ScreenShot 2024-04-29 at 10.38.11.png
        ScreenShot 2024-04-29 at 10.52.12.png

        without block (my normal mode):
        ScreenShot 2024-04-29 at 10.56.04.png
        ScreenShot 2024-04-29 at 10.51.57.png

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

          I'm not sure to get it with your graph. Can you write down the average values for each scenario?

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          • M Offline
            manilx @olivierlambert
            last edited by

            @olivierlambert

            with block: 100-150 MB/s approx
            without: 200-300 MB/s

            Values from observed NAS traffic.

            ForzaF 1 Reply Last reply Reply Quote 0
            • ForzaF Offline
              Forza @manilx
              last edited by

              @manilx Do you mean block as NBD mode?

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              • M Offline
                manilx @Forza
                last edited by manilx

                @Forza Did another test:

                A: Remote as nfs share with "Store backup as multiple data blocks"
                B: same but without multiple data blocks

                1st backup to A,"Backup"
                ScreenShot 2024-04-29 at 13.45.47.png
                2nd backup to B, "Backup"
                ScreenShot 2024-04-29 at 13.45.57.png
                3rd backup to A, "Backup"
                ScreenShot 2024-04-29 at 13.46.04.png
                4th backup to B, "Delta Backup"
                ScreenShot 2024-04-29 at 13.46.10.png

                ScreenShot 2024-04-29 at 13.44.27.png

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                • M Offline
                  manilx @manilx
                  last edited by

                  @manilx This was just one VM. Did not use NBD (forgot to turn on)

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

                    I'm a bit confused, you are comparing block based vs VHD, but did you also change the nconnect option between run or kept it to a specific number? (in case, which one)

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                    • M Offline
                      manilx @olivierlambert
                      last edited by

                      @olivierlambert allbackups done with nfs option "nconnect=6"

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                      • M Offline
                        manilx @manilx
                        last edited by

                        @manilx 2 more and yes seems to be confusing and just to round it up.

                        Same VM as above

                        Delta (full) backup using NBD without and with "nconnect=6" in the remote setting:

                        ScreenShot 2024-04-29 at 14.27.19.png

                        with nconnect=6
                        ScreenShot 2024-04-29 at 14.28.57.png

                        nconnect=6 doesn't seem to do a lot.

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