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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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    • ForzaF Offline
      Forza @florent
      last edited by

      @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.

      florentF 1 Reply Last reply Reply Quote 0
      • A Offline
        acomav
        last edited by

        Just replying to thank you for pointing this out. I have been having very poor backup speeds for over a month and this sorted it out.
        I have only used nconnect=4 and 6 for my NFS shares.

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

          Hi @acomav

          Can you give more details on your setup and the result before/after? We might use this to update our XO guide with the new values 🙂

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

            @olivierlambert Hi Olivier. I'll see what I can do. I've spent the weekend cleaning up my backups and catching up on mirror transfers. Once completed, I'll do a few custom backups at various nconnect values.

            1 Reply Last reply Reply Quote 2
            • 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 Offline
                  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?

                  M 1 Reply Last reply Reply Quote 0
                  • 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?

                      M 1 Reply Last reply Reply Quote 0
                      • 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

                        M 1 Reply Last reply Reply Quote 0
                        • 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 Offline
                            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)

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

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

                              M 1 Reply Last reply Reply Quote 0
                              • 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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