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    Unable to mount NFS Remote for backups while storage and ISO NFS SR's work perfectly

    Scheduled Pinned Locked Moved Backup
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    • P Online
      Pilow @Bub
      last edited by

      @Bub -v, --verbose say what is being done

      just try -v ?

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      • B Offline
        Bub @Pilow
        last edited by

        @Pilow seems the same error
        xo@xo-ce:/run/xo-server/mounts/LAB-NFS$ sudo mount -t -v nfs -o vers=3 192.168.221.20:/LAB-NFS /run/xo-server/mounts/LAB-NFS/
        mount: bad usage
        Try 'mount --help' for more information.

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        • P Online
          Pilow @Bub
          last edited by

          @Bub mmm put -v before the -t !

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          • B Offline
            Bub @Pilow
            last edited by

            @Pilow That seems did the trick!
            xo@xo-ce:/run/xo-server/mounts/LAB-NFS$ sudo mount -v -t nfs -o vers=3 192.168.221.20:/LAB-NFS /run/xo-server/mounts/LAB-NFS/
            mount.nfs: timeout set for Thu Nov 20 15:42:55 2025
            mount.nfs: trying text-based options 'vers=3,addr=192.168.221.20'
            mount.nfs: prog 100003, trying vers=3, prot=6
            mount.nfs: trying 192.168.221.20 prog 100003 vers 3 prot TCP port 2049
            mount.nfs: prog 100005, trying vers=3, prot=17
            mount.nfs: trying 192.168.221.20 prog 100005 vers 3 prot UDP port 54698
            mount.nfs: mount(2): Device or resource busy
            xo@xo-ce:/run/xo-server/mounts/LAB-NFS$ ping 192.168.221.20
            PING 192.168.221.20 (192.168.221.20) 56(84) bytes of data.
            64 bytes from 192.168.221.20: icmp_seq=1 ttl=64 time=0.884 ms
            64 bytes from 192.168.221.20: icmp_seq=2 ttl=64 time=0.531 ms
            64 bytes from 192.168.221.20: icmp_seq=3 ttl=64 time=0.507 ms
            64 bytes from 192.168.221.20: icmp_seq=4 ttl=64 time=0.648 ms
            64 bytes from 192.168.221.20: icmp_seq=5 ttl=64 time=0.496 ms
            ^C
            --- 192.168.221.20 ping statistics ---
            5 packets transmitted, 5 received, 0% packet loss, time 4082ms
            rtt min/avg/max/mdev = 0.496/0.613/0.884/0.145 ms
            xo@xo-ce:/run/xo-server/mounts/LAB-NFS$

            Why would it time out if it does mount nfs sr from the same qnap and same permission settings?! My head is starting to smoke lol

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            • P Online
              Pilow @Bub
              last edited by

              @Bub perhaps is it permission related, or NFS version /mapping related ?

              screenshot ther nfs server side configuration ? if possible.

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              • B Offline
                Bub @Bub
                last edited by

                6752efc5-b958-4fde-8b6a-0eb03e58303e-image.png
                .22 XCP-ng host
                .24 XOA
                .115 Unraid server1 - Able to mount with no issues
                .114 Unraid server2 - Able to mount with no issues

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                • B Offline
                  Bub
                  last edited by

                  What gets me is that if it was permissions related, theoretically, it should not mount the nfs storage SR with the same settings pointing to the xcpng host from the same qnap?!
                  It feels like something is different between the xoa nfs implementation and the xcpng host itself.
                  Dont you agree?

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                  • P Online
                    Pilow @Bub
                    last edited by Pilow

                    @Bub I agree, all checks are green ✅

                    could you do a : ip a
                    on the xoa ?

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                    • B Offline
                      Bub
                      last edited by

                      xo@xo-ce:/run/xo-server/mounts/LAB-NFS$ ip a
                      1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
                      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
                      inet 127.0.0.1/8 scope host lo
                      valid_lft forever preferred_lft forever
                      inet6 ::1/128 scope host
                      valid_lft forever preferred_lft forever
                      2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
                      link/ether c6:e3:43:a1:5b:e7 brd ff:ff:ff:ff:ff:ff
                      inet 192.168.221.24/24 brd 192.168.221.255 scope global eth0
                      valid_lft forever preferred_lft forever
                      inet6 fe80::c4e3:43ff:fea1:5be7/64 scope link
                      valid_lft forever preferred_lft forever

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                      • P Online
                        Pilow @Bub
                        last edited by Pilow

                        @Bub

                        get out of /run/xo-server/mounts/LAB-NFS

                        could you do a : mount -t nfs

                        just to see if there is not ALREADY a mount point... ?

                        if there is just do : umount /run/xo-server/mounts/LAB-NFS

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                        • P Online
                          Pilow @Pilow
                          last edited by

                          This post is deleted!
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                          • B Offline
                            Bub
                            last edited by

                            xo@xo-ce:~$ mount -t nfs
                            xo@xo-ce:~$ sudo mount -v -t nfs -o vers=3 192.168.221.20:/LAB-NFS /run/xo-server/mounts/LAB-NFS/
                            mount.nfs: timeout set for Thu Nov 20 16:50:18 2025
                            mount.nfs: trying text-based options 'vers=3,addr=192.168.221.20'
                            mount.nfs: prog 100003, trying vers=3, prot=6
                            mount.nfs: trying 192.168.221.20 prog 100003 vers 3 prot TCP port 2049
                            mount.nfs: prog 100005, trying vers=3, prot=17
                            mount.nfs: trying 192.168.221.20 prog 100005 vers 3 prot UDP port 54698
                            xo@xo-ce:~$ mount -t nfs
                            192.168.221.20:/LAB-NFS on /run/xo-server/mounts/LAB-NFS type nfs (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.221.20,mountvers=3,mountport=54698,mountproto=udp,local_lock=none,addr=192.168.221.20)
                            xo@xo-ce:~$ sudo umount /run/xo-server/mounts/LAB-NFS
                            xo@xo-ce:~$ mount -t nfs

                            So mounting in CLI seems to show it created a mount but i do not see it in the gui. so I unmounted it again and tried to remount in the gui remotes, its did add the remote but after a while, it gave a timeout error
                            a0003377-f39a-4bf8-877b-9b11e70f1c7f-image.png
                            {
                            "shortMessage": "Command failed with exit code 32: mount -o hard -t nfs 192.168.45.20:/LAB-NFS /run/xo-server/mounts/eecbb7da-e271-4c39-9681-5b50f8d65e9a",
                            "command": "mount -o hard -t nfs 192.168.45.20:/LAB-NFS /run/xo-server/mounts/eecbb7da-e271-4c39-9681-5b50f8d65e9a",
                            "escapedCommand": "mount -o hard -t nfs "192.168.45.20:/LAB-NFS" "/run/xo-server/mounts/eecbb7da-e271-4c39-9681-5b50f8d65e9a"",
                            "exitCode": 32,
                            "stdout": "",
                            "stderr": "mount.nfs: Connection timed out",
                            "failed": true,
                            "timedOut": false,
                            "isCanceled": false,
                            "killed": false
                            }

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                            • P Online
                              Pilow @Bub
                              last edited by

                              @Bub why 192.168.45.20 in the REMOTE configuration ?!

                              in CLI you point to 192.168.221.20

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                              • B Offline
                                Bub
                                last edited by

                                OMG I guess that's what happens when you try to to work on two labs same time, I mixed the lab1 subnet I'm working on with the lab2 on my last mount attempt.
                                I changed it to the correct subnet and it mounted properly this time
                                c0a2bcbd-3f04-4524-8e34-bcaff215abec-image.png

                                Can it be that unmounting it in cli fixed the issue?
                                I am going to try the same unmount command on lab1 setup, and see if that will get it going also.

                                Thank you so much @Pilow . I appreciate the time and energy you spend helping me with this one!

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                                • P Online
                                  Pilow @Bub
                                  last edited by Pilow

                                  @Bub haha great 😃

                                  yup in the process, you probably had a successful test in CLI to mount and it would block in XOA remote config as the mount already exists.

                                  in your first post it was : "stderr": "mount.nfs: failed to prepare mount: Operation not permitted
                                  and you had a mount.nfs: mount(2): Device or resource busy later on

                                  so keep this unmount command in case 😃

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                                  • B Offline
                                    Bub
                                    last edited by

                                    I will tell you a little secret, you taught me more than that one command for CLI lol
                                    One more important note for my Bitwarden 🙂
                                    Thanks again bud!

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