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    Error: invalid HTTP header in response body

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    • P Offline
      peo @manilx
      last edited by

      @manilx Does your backup job succeed if you run it manually after a failure (as I have figured out is happening for me) ?
      I did some more tests and found out that the setting "Purge snapshot data when using CBT" under advanced backup settings might be the cause of the problem. The only thing is that with this setting disabled, every machine being backed up will keep a space-wasting snapshot in the same storage repository as the snapshotted disk.

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

        @peo I don't have this setting set. The errors appear inconsistently.

        P 2 Replies Last reply Reply Quote 0
        • P Offline
          peo @manilx
          last edited by

          @manilx as you describe it, it might be a problem with the remote NFS storage, but still, the it would be nice if that error message could be a bit clearer.

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

            @peo Nope. Remote has no issue whatsoever.
            The issue is with the backup code because this is what changed. Worked before for many months without issues.
            And it's still working at the office on stable XOA.

            1 Reply Last reply Reply Quote 0
            • M Offline
              markxc
              last edited by

              dear all i am facing the same issue

              Error: invalid HTTP header in response body

              {
  "data": {
    "mode": "delta",
    "reportWhen": "failure"
  },
  "id": "1749107336350",
  "jobId": "89511625-67f3-46be-98fe-8d7a7584386f",
  "jobName": "All-2-50G-Delta",
  "message": "backup",
  "scheduleId": "405be84c-8b49-408a-871e-b21c211ee326",
  "start": 1749107336350,
  "status": "failure",
  "infos": [
    {
      "data": {
        "vms": [
          "20e7d42f-bf69-186d-ec65-82e08230e557"
        ]
      },
      "message": "vms"
    }
  ],
  "tasks": [
    {
      "data": {
        "type": "VM",
        "id": "20e7d42f-bf69-186d-ec65-82e08230e557",
        "name_label": "PfSense_Ip_92_61_60_23_EXT_172_16_16_99_INT_2022_03_03_07_24_57"
      },
      "id": "1749107339106",
      "message": "backup VM",
      "start": 1749107339106,
      "status": "failure",
      "tasks": [
        {
          "id": "1749107339113",
          "message": "clean-vm",
          "start": 1749107339113,
          "status": "success",
          "end": 1749107339118,
          "result": {
            "merge": false
          }
        },
        {
          "id": "1749107339665",
          "message": "snapshot",
          "start": 1749107339665,
          "status": "success",
          "end": 1749107341927,
          "result": "02828209-8cc6-8694-8fdd-af5aa04d5b90"
        },
        {
          "data": {
            "id": "455eee8b-49ca-4552-9431-ebb417fbd8f8",
            "isFull": true,
            "type": "remote"
          },
          "id": "1749107341927:0",
          "message": "export",
          "start": 1749107341927,
          "status": "success",
          "tasks": [
            {
              "id": "1749107347491",
              "message": "clean-vm",
              "start": 1749107347491,
              "status": "success",
              "end": 1749107347494,
              "result": {
                "merge": false
              }
            }
          ],
          "end": 1749107347496
        }
      ],
      "end": 1749107347496,
      "result": {
        "message": "invalid HTTP header in response body",
        "name": "Error",
        "stack": "Error: invalid HTTP header in response body\n    at checkVdiExport (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/xapi/vdi.mjs:40:19)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Xapi.exportContent (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/xapi/vdi.mjs:326:7)\n    at async file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_incrementalVm.mjs:56:34\n    at async Promise.all (index 1)\n    at async cancelableMap (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_cancelableMap.mjs:11:12)\n    at async exportIncrementalVm (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_incrementalVm.mjs:25:3)\n    at async IncrementalXapiVmBackupRunner._copy (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_runners/_vmRunners/IncrementalXapi.mjs:44:25)\n    at async IncrementalXapiVmBackupRunner.run (file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_runners/_vmRunners/_AbstractXapi.mjs:396:9)\n    at async file:///opt/xo/xo-builds/xen-orchestra-202503211145/@xen-orchestra/backups/_runners/VmsXapi.mjs:166:38"
      }
    }
  ],
  "end": 1749107347497
}
              1 Reply Last reply Reply Quote 0
              • P Offline
                peo @olivierlambert
                last edited by

                @olivierlambert Have you heard of any progress in this case ? I found out that I got rid of the error when I disabled "Purge snapshot data when using CBT" on all my backups, so the backups are no longer failing, except from the Docker VM I have mentioned in another case "Success or failure" (or similar), which indicates failure, but restores successfully (which is weird).

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

                  I'm not aware of similar issues for our XOA users 😕

                  @florent does it ring any bell?

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

                    @olivierlambert

                    today same issue again

                    Snapshot
                    Start: 2025-06-12 07:16
                    End: 2025-06-12 07:16
                    50G-Backup-Delta
                    Start: 2025-06-12 07:16
                    End: 2025-06-12 07:16
                    Duration: a few seconds
                    Start: 2025-06-12 07:16
                    End: 2025-06-12 07:16
                    Duration: a few seconds
                    Error: invalid HTTP header in response body
                    Type: full

                    vm is a PFSense

                    with template Other install media

                    Management agent 6.2.0-76888 detected
                    Hardware virtualization with paravirtualization drivers enabled (PVHVM)

                    florentF 1 Reply Last reply Reply Quote 0
                    • florentF Offline
                      florent Vates 🪐 XO Team @markxc
                      last edited by

                      @markxc if you are on master you should have something on the xo logs , starting with invalid HTTP header in response body

                      Can you check and tell us what is the error message attached ?

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

                        @florent

                        un 12 07:16:23 xenorchestra xo-server[1679463]: 2025-06-12T05:16:23.729Z xo:xapi:vdi WARN invalid HTTP header in response body {
Jun 12 07:16:23 xenorchestra xo-server[1679463]:   body: 'HTTP/1.1 500 Internal Error\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     'content-length: 266\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     'content-type:text/html\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     'connection:close\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     'cache-control:no-cache, no-store\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     '\r\n' +
Jun 12 07:16:23 xenorchestra xo-server[1679463]:     '<html><body><h1>HTTP 500 internal server error</h1>An unexpected error occurred; please wait a whi>Jun 12 07:16:23 xenorchestra xo-server[1679463]: }
Jun 12 07:16:28 xenorchestra xo-server[1679463]: 2025-06-12T05:16:28.522Z xo:backups:MixinBackupWriter WARN cleanVm: incorrect backup size in metadata {
Jun 12 07:16:28 xenorchestra xo-server[1679463]:   path: '/xo-vm-backups/04d4ce05-81fd-e2b6-ef0d-4e9b91f3ffb1/20250610T051506Z.json',
Jun 12 07:16:28 xenorchestra xo-server[1679463]:   actual: 1116023296,
Jun 12 07:16:28 xenorchestra xo-server[1679463]:   expected: 1116023808
Jun 12 07:16:28 xenorchestra xo-server[1679463]: }
Jun 12 07:16:29 xenorchestra xo-server[1675344]: 2025-06-12T05:16:29.954Z xo:backups:mergeWorker INFO merge in progress {
Jun 12 07:16:29 xenorchestra xo-server[1675344]:   done: 59198,
Jun 12 07:16:29 xenorchestra xo-server[1675344]:   parent: '/xo-vm-backups/eda7fcd9-484f-7f19-b5ae-0cfd94ca2207/vdis/89511625-67f3-46be-98fe-8d7a7584386>Jun 12 07:16:29 xenorchestra xo-server[1675344]:   progress: 83,
Jun 12 07:16:29 xenorchestra xo-server[1675344]:   total: 71442
Jun 12 07:16:29 xenorchestra xo-server[1675344]: }
Jun 12 07:16:39 xenorchestra xo-server[1675344]: 2025-06-12T05:16:39.954Z xo:backups:mergeWorker INFO merge in progress {
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   done: 59467,
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   parent: '/xo-vm-backups/eda7fcd9-484f-7f19-b5ae-0cfd94ca2207/vdis/89511625-67f3-46be-98fe-8d7a7584386
un 12 07:16:39 xenorchestra xo-server[1675344]: 2025-06-12T05:16:39.954Z xo:backups:mergeWorker INFO merge in progress {
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   done: 59467,
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   parent: '/xo-vm-backups/eda7fcd9-484f-7f19-b5ae-0cfd94ca2207/vdis/89511625-67f3-46be-98fe-8d7a7584386>
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   progress: 83,
Jun 12 07:16:39 xenorchestra xo-server[1675344]:   total: 71442
Jun 12 07:16:39 xenorchestra xo-server[1675344]: }
Jun 12 07:16:46 xenorchestra xo-server[1679463]: 2025-06-12T05:16:46.783Z @xen-orchestra/xapi/disks/Xapi WARN openNbdCBT Error: CBT is disabled
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at XapiVhdCbtSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/xapi/d>
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async #openNbdCbt (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/xapi/disks>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async XapiDiskSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/di>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/backups/_incrementalVm.>
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async Promise.all (index 1)
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async cancelableMap (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/backups/>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async exportIncrementalVm (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/ba>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async IncrementalXapiVmBackupRunner._copy (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async IncrementalXapiVmBackupRunner.run (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xe>
Jun 12 07:16:46 xenorchestra xo-server[1679463]:   code: 'CBT_DISABLED'
Jun 12 07:16:46 xenorchestra xo-server[1679463]: }
Jun 12 07:16:46 xenorchestra xo-server[1679463]: 2025-06-12T05:16:46.863Z @xen-orchestra/xapi/disks/Xapi WARN openNbdCBT Error: CBT is disabled
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at XapiVhdCbtSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/xapi/d>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async #openNbdCbt (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/xapi/disks>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async XapiDiskSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/di>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/backups/_incrementalVm.>
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async Promise.all (index 2)
Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async cancelableMap (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/backups/>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async exportIncrementalVm (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xen-orchestra/ba>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async IncrementalXapiVmBackupRunner._copy (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@>Jun 12 07:16:46 xenorchestra xo-server[1679463]:     at async IncrementalXapiVmBackupRunner.run (file:///opt/xo/xo-builds/xen-orchestra-202506050918/@xe>
Jun 12 07:16:46 xenorchestra xo-server[1679463]:   code: 'CBT_DISABLED'
Jun 12 07:16:46 xenorchestra xo-server[1679463]: }
                        florentF 1 Reply Last reply Reply Quote 0
                        • florentF Offline
                          florent Vates 🪐 XO Team @markxc
                          last edited by

                          @markxc thank you that is the part I wanted

                          I think someone on the xapi side should look into it

                          1 Reply Last reply Reply Quote 0
                          • F Offline
                            FritzGerald
                            last edited by

                            Hello everyone,

                            this type of error now popped up at my delta backup as well.

                            Some specs:
                            OS: Debian 12 patched
                            Xen Orchestra: as of 20250616 0005
                            XEN-NG: 8.3 latest patches applied
                            Job Type: Delta Backup with 8 VMs backing up to remote Synology NAS

                            The job run for a quiet a few weeks without any problems. But I have to admit, that I cannot say, what exactly induced the problem, since I updated xen orchestra and modified the backup job (I removed 2 VM, moved them to another machine, added additional disks and readded them the same backup job). Manually triggering the backup via "Restart VM backup" upon the failures dialog successfully runs the backup.

                            I get the following error in the log:

                            ...
Jun 18 02:41:28 xoa xo-server[258369]: 2025-06-18T00:41:28.527Z xo:backups:MixinBackupWriter INFO merge in progress {
Jun 18 02:41:28 xoa xo-server[258369]:   done: 6895,
Jun 18 02:41:28 xoa xo-server[258369]:   parent: '/xo-vm-backups/924b4cf4-c8b3-18ab-5f78-d1daa77bc3fc/vdis/8c0477b9-b6e8-45ca-bcac-b78549e05b6f/ab2c3be9-bec5-4361-9ad2-81acfc14c16e/20250611T005140Z.vhd',
Jun 18 02:41:28 xoa xo-server[258369]:   progress: 97,
Jun 18 02:41:28 xoa xo-server[258369]:   total: 7132
Jun 18 02:41:28 xoa xo-server[258369]: }
Jun 18 02:41:38 xoa xo-server[258369]: 2025-06-18T00:41:38.528Z xo:backups:MixinBackupWriter INFO merge in progress {
Jun 18 02:41:38 xoa xo-server[258369]:   done: 7073,
Jun 18 02:41:38 xoa xo-server[258369]:   parent: '/xo-vm-backups/924b4cf4-c8b3-18ab-5f78-d1daa77bc3fc/vdis/8c0477b9-b6e8-45ca-bcac-b78549e05b6f/ab2c3be9-bec5-4361-9ad2-81acfc14c16e/20250611T005140Z.vhd',
Jun 18 02:41:38 xoa xo-server[258369]:   progress: 99,
Jun 18 02:41:38 xoa xo-server[258369]:   total: 7132
Jun 18 02:41:38 xoa xo-server[258369]: }
Jun 18 02:41:46 xoa xo-server[258369]: 2025-06-18T00:41:46.228Z xo:backups:MixinBackupWriter WARN cleanVm: incorrect backup size in metadata {
Jun 18 02:41:46 xoa xo-server[258369]:   path: '/xo-vm-backups/924b4cf4-c8b3-18ab-5f78-d1daa77bc3fc/20250617T235823Z.json',
Jun 18 02:41:46 xoa xo-server[258369]:   actual: 108580044800,
Jun 18 02:41:46 xoa xo-server[258369]:   expected: 108606965248
Jun 18 02:41:46 xoa xo-server[258369]: }
Jun 18 02:46:20 xoa xo-server[258369]: 2025-06-18T00:46:20.182Z xo:backups:MixinBackupWriter WARN cleanVm: incorrect backup size in metadata {
Jun 18 02:46:20 xoa xo-server[258369]:   path: '/xo-vm-backups/9960fd34-ad5a-8854-6a90-3b1e88c1398f/20250618T004205Z.json',
Jun 18 02:46:20 xoa xo-server[258369]:   actual: 12184453120,
Jun 18 02:46:20 xoa xo-server[258369]:   expected: 12190142976
Jun 18 02:46:20 xoa xo-server[258369]: }
Jun 18 02:46:41 xoa xo-server[258369]: 2025-06-18T00:46:41.281Z @xen-orchestra/xapi/disks/Xapi WARN openNbdCBT Error: can't connect to any nbd client
Jun 18 02:46:41 xoa xo-server[258369]:     at connectNbdClientIfPossible (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/xapi/disks/utils.mjs:23:19)
Jun 18 02:46:41 xoa xo-server[258369]:     at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
Jun 18 02:46:41 xoa xo-server[258369]:     at async XapiVhdCbtSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/xapi/disks/XapiVhdCbt.mjs:75:20)
Jun 18 02:46:41 xoa xo-server[258369]:     at async #openNbdCbt (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/xapi/disks/Xapi.mjs:129:7)
Jun 18 02:46:41 xoa xo-server[258369]:     at async XapiDiskSource.init (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/disk-transform/dist/DiskPassthrough.mjs:28:41)
Jun 18 02:46:41 xoa xo-server[258369]:     at async file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/backups/_incrementalVm.mjs:65:5
Jun 18 02:46:41 xoa xo-server[258369]:     at async Promise.all (index 1)
Jun 18 02:46:41 xoa xo-server[258369]:     at async cancelableMap (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/backups/_cancelableMap.mjs:11:12)
Jun 18 02:46:41 xoa xo-server[258369]:     at async exportIncrementalVm (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/backups/_incrementalVm.mjs:28:3)
Jun 18 02:46:41 xoa xo-server[258369]:     at async IncrementalXapiVmBackupRunner._copy (file:///opt/xo/xo-builds/xen-orchestra-202506160005/@xen-orchestra/backups/_runners/_vmRunners/IncrementalXapi.mjs:38:25) {
Jun 18 02:46:41 xoa xo-server[258369]:   code: 'NO_NBD_AVAILABLE'
Jun 18 02:46:41 xoa xo-server[258369]: }
Jun 18 02:46:43 xoa xo-server[258369]: 2025-06-18T00:46:43.098Z xo:xapi:vdi WARN invalid HTTP header in response body {
Jun 18 02:46:43 xoa xo-server[258369]:   body: 'HTTP/1.1 500 Internal Error\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     'content-length: 318\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     'content-type: text/html\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     'connection: close\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     'cache-control: no-cache, no-store\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     '\r\n' +
Jun 18 02:46:43 xoa xo-server[258369]:     '<html><body><h1>HTTP 500 internal server error</h1>An unexpected error occurred; please wait a while and try again. If the problem persists, please contact your support representative.<h1> Additional information </h1>VDI_INCOMPATIBLE_TYPE: [ OpaqueRef:1ed06eb9-ed6f-d8f0-25a4-647a4ff22ca6; CBT metadata ]</body></html>'
Jun 18 02:46:43 xoa xo-server[258369]: }
...

                            Anyone has any ideas?

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

                              @FritzGerald Do you have "Purge snapshot data when using CBT" enabled?

                              I had and when I disabled this, it didn't happen since.

                              F 1 Reply Last reply Reply Quote 0
                              • F Offline
                                FritzGerald @manilx
                                last edited by

                                Hi @manilx.

                                thank you for the quick reply. I indeed do have it enabled.

                                I am just surprised since the exact same job worked previously and it does not make sense to me to keep it. Nevertheless I have to admit, that my knowledge is limited to these types of snapshots and its impact upon storage usage. Just FYI, there is this discussion I found: https://xcp-ng.org/forum/topic/10400/purge-snapshot-data-when-using-cbt-why-wouldn-t-i-enable-this.

                                However, your point is very good. I just disabled it in order to validate your thesis. If so, I think upon our system behavior we could then report some sort of "bug". Did you backup did not work from the start either or was it also after "some sort of modifications"?

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

                                  @FritzGerald This error happened only on my backups to a remore (a bit slower location but also mounted as nfs like to the local one). It started out of the blue after running perfectly and didn't happen all the time. No rime.
                                  I read about disabling this option in this thread and tried it. Seems to have worked and it is most definitely a bug.

                                  F 1 Reply Last reply Reply Quote 0
                                  • F Offline
                                    FritzGerald @manilx
                                    last edited by

                                    @manilx okay. I will wait and see. Backup runs tonight.

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                                      peo @manilx
                                      last edited by

                                      @manilx said in Error: invalid HTTP header in response body:

                                      @peo I don't have this setting set. The errors appear inconsistently.

                                      So you confirmed my "solution" to the problem, even if you did not had that setting enabled when I suggested turning it off.

                                      It's great that more people have this problem and it gets resolved with the same "solution". I was starting to think I imagined the problems week after week before I first reported it.

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                                        manilx @peo
                                        last edited by

                                        @peo I had the setting turned on and turned it off! Seems to have helped.

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                                          FritzGerald @FritzGerald
                                          last edited by

                                          Hi everyone, just FYI. During my delta backup testing, I ran out of space on my NAS (although it should have had enough?!?). It must have created more data then I expected. Therefore I had other priorities, I removed the backups and set up new delta backups. However, thereby I could not dive into further exploring the problems.

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                                            FritzGerald @FritzGerald
                                            last edited by

                                            Hi everyone again. I pretty much got back to square one. What I can observer is, that all my VMs where I added additional disc run into the above error code. So 1 disc per VM works fine for 6 backups, the two others VMs (on with 2 disc, one with 5 discs) fail. Does CBT based delta backups only work if there is no disc attached? I really appreciate any help.

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