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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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    • 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 Online
        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 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?

                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 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)

                          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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