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    Error on Delta Backup - cannot read property "length" of undefined

    Scheduled Pinned Locked Moved Xen Orchestra
    16 Posts 5 Posters 3.0k Views 2 Watching
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    • V
      vmpr
      last edited by

      I had the same problem in my homelab - xo from sources, installed it the official way from the documentation. updated via git pull --ff-only 3 days ago. the backups are failing with the error message:

        "tasks": [
          {
            "data": {
              "type": "VM",
              "id": "abc2c07e-33e8-97e2-6724-3e69f837d0f7"
            },
            "id": "1617691268721:0",
            "message": "backup VM",
            "start": 1617691268721,
            "status": "failure",
            "tasks": [
              {
                "id": "1617691271853",
                "message": "snapshot",
                "start": 1617691271853,
                "status": "success",
                "end": 1617691328127,
                "result": "74c58079-3e89-53db-a770-6f3b936833b2"
              },
              {
                "id": "1617691328128",
                "message": "merge",
                "start": 1617691328128,
                "status": "failure",
                "end": 1617691328128,
                "result": {
                  "message": "Cannot read property 'length' of undefined",
                  "name": "TypeError",
                  "stack": "TypeError: Cannot read property 'length' of undefined\n    at /home/toor/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/home/toor/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /home/toor/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/home/toor/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/home/toor/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/home/toor/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/home/toor/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/home/toor/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/home/toor/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                }
              }
            ],
            "end": 1617691344109,
            "result": {
              "message": "Cannot read property 'length' of undefined",
              "name": "TypeError",
              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /home/toor/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/home/toor/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /home/toor/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/home/toor/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/home/toor/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/home/toor/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/home/toor/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/home/toor/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/home/toor/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
            }
          },
      

      I created a new delta backup job and it works now, deleted the old one - but its not the best solution, maybe something is incompatible with the last releases in the master branch to old backup jobs?

      hope to help other people with a quick workaround, but hopefully the xoa guys can look into that - great job btw!

      cheers, Ringo

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

        Maybe a transient issue on master. That's why, when there's an issue, it's important to check you are on latest master commit and try again 🙂

        V 1 Reply Last reply
        Reply Quote 0
        • V
          vmpr @olivierlambert
          last edited by

          @olivierlambert yes I thought the same so I updated the code from the master again yesterday but didn't help 😞

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

            Have you tried to create a new job since the update?

            1 Reply Last reply
            Reply Quote 0
            • M
              mbt
              last edited by

              I can confirm having the same issue on two XO instances since upgrading to 5.78.2 / 5.80.0

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

                Only master makes sense 🙂 There's no "release" concept on the sources. Please update to latest master commit, recreate a job and report if you still have the problem 👍

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

                  @olivierlambert Hi Olivier,
                  I updated both instances, recreated the jobs and while backups on one instance now work again, on the other they still fail:

                  {
                    "data": {
                      "mode": "delta",
                      "reportWhen": "failure"
                    },
                    "id": "1617829260018",
                    "jobId": "72cb10c2-9949-4b9c-9618-33a2de5b0f79",
                    "jobName": "customer-weekdays",
                    "message": "backup",
                    "scheduleId": "8333dbe9-6525-4f4f-a2da-cc6304254e96",
                    "start": 1617829260018,
                    "status": "failure",
                    "infos": [
                      {
                        "data": {
                          "vms": [
                            "adbe367b-e33e-66f7-863c-e21ea8fa301a",
                            "3837691a-c7c2-3ba9-143f-8afd0eb14f94",
                            "cbee81b4-afb8-2773-a92a-dd4b3f83651f",
                            "16dd84d4-2455-c293-2529-6311a98ecd46",
                            "03037a27-bc51-7cfc-ad64-4146992fc95a",
                            "324aa303-4404-20c1-c8f7-686ace47fd3f",
                            "5544f33e-5fd9-12e1-ee65-f5849bd7f442",
                            "d649555a-c134-fe17-aa68-d49b5ba50edf"
                          ]
                        },
                        "message": "vms"
                      }
                    ],
                    "tasks": [
                      {
                        "data": {
                          "type": "VM",
                          "id": "adbe367b-e33e-66f7-863c-e21ea8fa301a"
                        },
                        "id": "1617829261498:0",
                        "message": "backup VM",
                        "start": 1617829261498,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829282666",
                            "message": "snapshot",
                            "start": 1617829282666,
                            "status": "success",
                            "end": 1617829289768,
                            "result": "4815149b-0fb3-8cf3-8ec0-e32d5f3432fc"
                          },
                          {
                            "id": "1617829289768:0",
                            "message": "merge",
                            "start": 1617829289768,
                            "status": "failure",
                            "end": 1617829289771,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829291965,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "3837691a-c7c2-3ba9-143f-8afd0eb14f94"
                        },
                        "id": "1617829291966",
                        "message": "backup VM",
                        "start": 1617829291966,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829292001",
                            "message": "snapshot",
                            "start": 1617829292001,
                            "status": "success",
                            "end": 1617829299739,
                            "result": "e095c928-92c3-c085-1ea0-70584e5300e1"
                          },
                          {
                            "id": "1617829299739:0",
                            "message": "merge",
                            "start": 1617829299739,
                            "status": "failure",
                            "end": 1617829299739,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829301116,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "cbee81b4-afb8-2773-a92a-dd4b3f83651f"
                        },
                        "id": "1617829301116:0",
                        "message": "backup VM",
                        "start": 1617829301116,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829301149",
                            "message": "snapshot",
                            "start": 1617829301149,
                            "status": "success",
                            "end": 1617829309295,
                            "result": "b34ab48b-4077-0ad8-ea82-8c7233c82db6"
                          },
                          {
                            "id": "1617829309296",
                            "message": "merge",
                            "start": 1617829309296,
                            "status": "failure",
                            "end": 1617829309296,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829320279,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "16dd84d4-2455-c293-2529-6311a98ecd46"
                        },
                        "id": "1617829320279:0",
                        "message": "backup VM",
                        "start": 1617829320279,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829320312",
                            "message": "snapshot",
                            "start": 1617829320312,
                            "status": "success",
                            "end": 1617829333295,
                            "result": "1596e20b-e061-df4c-46d3-b2d5cce00094"
                          },
                          {
                            "id": "1617829333295:0",
                            "message": "merge",
                            "start": 1617829333295,
                            "status": "failure",
                            "end": 1617829333295,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829339414,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "03037a27-bc51-7cfc-ad64-4146992fc95a"
                        },
                        "id": "1617829339415",
                        "message": "backup VM",
                        "start": 1617829339415,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829339440",
                            "message": "snapshot",
                            "start": 1617829339440,
                            "status": "success",
                            "end": 1617829343670,
                            "result": "65a5a558-c30a-d0d8-5d02-57056bf6f7fc"
                          },
                          {
                            "id": "1617829343671",
                            "message": "merge",
                            "start": 1617829343671,
                            "status": "failure",
                            "end": 1617829343671,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829344953,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "324aa303-4404-20c1-c8f7-686ace47fd3f"
                        },
                        "id": "1617829344954",
                        "message": "backup VM",
                        "start": 1617829344954,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829344986",
                            "message": "snapshot",
                            "start": 1617829344986,
                            "status": "success",
                            "end": 1617829352405,
                            "result": "a0e9ca62-3e76-b6d1-cb0c-a3f0e602aded"
                          },
                          {
                            "id": "1617829352405:0",
                            "message": "merge",
                            "start": 1617829352405,
                            "status": "failure",
                            "end": 1617829352405,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829354244,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "5544f33e-5fd9-12e1-ee65-f5849bd7f442"
                        },
                        "id": "1617829354244:0",
                        "message": "backup VM",
                        "start": 1617829354244,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829354276",
                            "message": "snapshot",
                            "start": 1617829354276,
                            "status": "success",
                            "end": 1617829358692,
                            "result": "6f1be8c4-4559-35da-e0b7-efc042d9b174"
                          },
                          {
                            "id": "1617829358692:0",
                            "message": "merge",
                            "start": 1617829358692,
                            "status": "failure",
                            "end": 1617829358692,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829359980,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      },
                      {
                        "data": {
                          "type": "VM",
                          "id": "d649555a-c134-fe17-aa68-d49b5ba50edf"
                        },
                        "id": "1617829359980:0",
                        "message": "backup VM",
                        "start": 1617829359980,
                        "status": "failure",
                        "tasks": [
                          {
                            "id": "1617829360005",
                            "message": "snapshot",
                            "start": 1617829360005,
                            "status": "success",
                            "end": 1617829365133,
                            "result": "7b152071-5515-80c0-13fc-e390a13592d4"
                          },
                          {
                            "id": "1617829365133:0",
                            "message": "merge",
                            "start": 1617829365133,
                            "status": "failure",
                            "end": 1617829365133,
                            "result": {
                              "message": "Cannot read property 'length' of undefined",
                              "name": "TypeError",
                              "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                            }
                          }
                        ],
                        "end": 1617829367170,
                        "result": {
                          "message": "Cannot read property 'length' of undefined",
                          "name": "TypeError",
                          "stack": "TypeError: Cannot read property 'length' of undefined\n    at /opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:114:31\n    at Zone.run (/opt/xen-orchestra/node_modules/node-zone/index.js:80:23)\n    at /opt/xen-orchestra/node_modules/node-zone/index.js:89:19\n    at Function.fromFunction (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:20:27)\n    at SyncThenable.fulfilledThen [as then] (/opt/xen-orchestra/@xen-orchestra/backups/_syncThenable.js:2:50)\n    at TaskLogger.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:77:10)\n    at Object.run (/opt/xen-orchestra/@xen-orchestra/backups/Task.js:157:17)\n    at DeltaBackupWriter._deleteOldEntries (/opt/xen-orchestra/@xen-orchestra/backups/_DeltaBackupWriter.js:108:17)\n    at Array.<anonymous> (/opt/xen-orchestra/@xen-orchestra/backups/_VmBackup.js:150:70)\n    at Function.from (<anonymous>)"
                        }
                      }
                    ],
                    "end": 1617829367170
                  }
                  
                  1 Reply Last reply
                  Reply Quote 0
                  • olivierlambertO
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    Does it ring any bell @julien-f ?

                    1 Reply Last reply
                    Reply Quote 0
                    • julien-fJ
                      julien-f Vates 🪐 Co-Founder XO Team
                      last edited by

                      Nope, I don't see how this error can occur, are you up to date with master?

                      M 1 Reply Last reply
                      Reply Quote 0
                      • M
                        mbt @julien-f
                        last edited by

                        At least I think so. I worked with svn for years but that was ages ago and I never got into using git.

                        root@xo:/opt/xen-orchestra# git rev-parse master
                        de288a008d83b81ea93d7f45889972028ff9ed6c
                        root@xo:/opt/xen-orchestra# git branch
                        * master
                        root@xo:/opt/xen-orchestra# git fetch --dry-run
                        remote: Enumerating objects: 5, done.
                        remote: Counting objects: 100% (5/5), done.
                        remote: Compressing objects: 100% (2/2), done.
                        remote: Total 5 (delta 3), reused 5 (delta 3), pack-reused 0
                        Unpacking objects: 100% (5/5), done.
                        From https://github.com/vatesfr/xen-orchestra
                           e2515e531..52c4df4e4  ya_host_update_rev -> origin/ya_host_update_rev
                        
                        julien-fJ 1 Reply Last reply
                        Reply Quote 0
                        • julien-fJ
                          julien-f Vates 🪐 Co-Founder XO Team @mbt
                          last edited by

                          @mbt A simple git pull --ff-only should do the trick.

                          Anyway, I think I found the issue 🙂

                          julien-fJ 1 Reply Last reply
                          Reply Quote 0
                          • julien-fJ
                            julien-f Vates 🪐 Co-Founder XO Team @julien-f
                            last edited by

                            Should be fixed on master, please test and keep me posted 🙂

                            FYI https://github.com/vatesfr/xen-orchestra/commit/8e4c90129e2ce82cd1d4097005048c0564898e72

                            M 1 Reply Last reply
                            Reply Quote 0
                            • M
                              mbt @julien-f
                              last edited by

                              @julien-f Hi Julien,

                              I updated, recreated the backup job and now it works again. Thank you! 🙂

                              julien-fJ 1 Reply Last reply
                              Reply Quote 0
                              • julien-fJ
                                julien-f Vates 🪐 Co-Founder XO Team @mbt
                                last edited by

                                @mbt Great! Thanks for your report and testing 🙂

                                1 Reply Last reply
                                Reply Quote 0

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