@simonp , thank you very much and all of your team ! ! !
Keep up the outstanding work.
Regards,
Marc
@simonp , thank you very much and all of your team ! ! !
Keep up the outstanding work.
Regards,
Marc
Hi @simonp.
The problem is gone with commit 44e5b!!!
Up-to-date XCP-NG host and XenOrchestra VM were restarted after updating XenOrchestra.
I just initiated a full backup and all VMs - including my problematic machine - were backed up successfully without error.
Awesome! I will wait with closing until the scheduled delta backup is completed successfully, too.
Edit:
Scheduled backup ran without issue. The problem seems to have been resolved!
Thanks for all your work and assistance 
Regards,
Marc
Hi @simonp
The host was restarted regularly. After every update I restart the host and consequently all VMs running on it. The XOA VM is also running on that host.
Regards,
Marc
Just to give an update.
I still am having the issue with current commit 090ce.
Regards,
Marc
Evening @pierrebrunet
My bad.
I am now on commit b440f and the issue persist.
I have written you a message with the link to the file.
Regards,
Marc
With commit c74a8 the problem is still present but the transfer was completed again.
Unfortunately my installation does not recognize the "xen-bugtool" command. And both log files are not present.
Is this something that needs enabling after install of XCP-NG?
Unfortunately and unnoticed my syslog-server did not receive any messages from XCP-NG in the last 30 days.
Other inputs work 
**Edit:
I have deleted and re-added the syslog-server with port and now logs are being send to Graylog.**
Thanks for your assistance y'all.
Regards,
Marc
With commit caa17 the transfer did not happen again and fails the with the known message.
Regards,
Marc
Quick Update:
Was looking good with commit cf26d.
After the transfer completed the VDI of that particular VM was still in use, according to XO.
So still failure on the job.
Regards,
Marc
Hi @pierrebrunet.
I have deleted the "parentless" VDIs and snapshots.
So the "Unhealthy VDI" page is empty for me.
So everytime I retry with the VM in question it is creating a new (full) backup-chain.
Regards,
Marc
Problem still present in commit 04deb.
Here is the log from the XO6 interface:
"XapiError: VDI_IN_USE(OpaqueRef:ce1e2c1b-9b52-d813-88fc-18513a51306f, destroy)\n
at XapiError.wrap (file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/_XapiError.mjs:16:12)\n
at default (file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/_getTaskResult.mjs:13:29)\n
at Xapi._addRecordToCache (file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/index.mjs:1078:24)\n
at file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/index.mjs:1112:14\n
at Array.forEach (<anonymous>)\n
at Xapi._processEvents (file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/index.mjs:1102:12)\n
at Xapi._watchEvents (file:///opt/xo/xo-builds/xen-orchestra-202606131310/packages/xen-api/index.mjs:1275:14)\n
at process.processTicksAndRejections (node:internal/process/task_queues:104:5)"
Thanks for your assistance ! ! !
Regards,
Marc

I am giving a short "report", when there is new version out and I have tested it.
Nice weekend @y'all
Regards,
Marc
Problem still persists with commit e9b66.
Thanks for the support!
Regards,
Marc
Commit 1ba82 did change something. It transferred the VDI but then fails with the VDI_IN_USE on that particular machine.
Regards,
Marc
The problem still persists with commit e376a.
After installation of updates to XenOrchestra I reboot the VM. Still no backup on this one VM possible.
For now I have created a separate backup job which seems to be working.
Regards,
Marc
I have restarted XO as well as my NAS several times since Saturday.
Still no change.
Regards,
Marc
Hi @pierrebrunet.
Thanks for the tip.
Didn't help, unfortunately. Same error message regarding VDI_IN_USE.
Regards,
Marc
Hi @DustinB
The VM could be backed up successfully with the same warning about the "disk parent":

The backup log:
{
"data": {
"mode": "delta",
"reportWhen": "never"
},
"id": "1780940083480",
"jobId": "8326600e-9863-4afa-b724-ae493f564ec8",
"jobName": "ITServices-Detla-Test",
"message": "backup",
"scheduleId": "98f60867-3ac9-4ec5-b0fc-c3fe5520dc1b",
"start": 1780940083480,
"status": "success",
"tasks": [
{
"id": "0mq5hqsy6-9uqj9yfb22",
"start": 1780940085774,
"status": "success",
"tasks": [
{
"id": "0mq5hqsyx-i5pdr4zkson",
"start": 1780940085801,
"status": "success",
"warnings": [
{
"data": {
"path": "/xo-vm-backups/011114a9-b622-92eb-581f-36f961efe622/vdis/21bbca2a-59ad-4fa2-bb73-f60c1e9216e7/63a73be5-96ff-4c25-b7dd-c93284719916/20260608T150007Z.vhd",
"error": {}
},
"message": "failed to read disk parent info"
}
],
"end": 1780940085910,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5hqtyu-9l484fbage",
"start": 1780940087094,
"status": "success",
"end": 1780940087947,
"result": "396960d5-93e9-670e-e8b5-345283148c0f",
"message": "snapshot"
},
{
"id": "0mq5hqumk-7yfetdkltc2",
"start": 1780940087948,
"status": "success",
"tasks": [
{
"id": "0mq5hqvn3-wfuuk0sz1mi",
"start": 1780940089263,
"status": "success",
"end": 1780940089285,
"result": {
"size": 104448
},
"message": "transfer",
"data": {
"progress": 100
}
},
{
"id": "0mq5hr0dj-1l495zk6iys",
"start": 1780940095399,
"status": "success",
"warnings": [
{
"data": {
"path": "/xo-vm-backups/011114a9-b622-92eb-581f-36f961efe622/vdis/21bbca2a-59ad-4fa2-bb73-f60c1e9216e7/63a73be5-96ff-4c25-b7dd-c93284719916/20260608T150007Z.vhd",
"error": {}
},
"message": "failed to read disk parent info"
}
],
"end": 1780940095573,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780940095590,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780940095590,
"message": "backup VM",
"data": {
"id": "011114a9-b622-92eb-581f-36f961efe622",
"type": "VM",
"name_label": "ITServices",
"progress": 0
}
}
],
"end": 1780940095591,
"infos": [
{
"data": {
"vms": [
"011114a9-b622-92eb-581f-36f961efe622"
]
},
"message": "vms"
}
]
}
I am using "smart mode" for backup jobs. The standalone job went through with and without "smart mode".
Removing the tag from the VM in question and adding it again did not help. I have also deleted the snapshot linked to the backup job and retried, with no change in behavior.
The VM is shutdown and I only turn it on when I need to. During backup it is usually not running.
Thanks again.
Regards,
Marc
Hi there.
Given is a community edition XO on commit 3500d.
Since June 6th one out of seven VMs is no longer backing up.
It is always the same VM which is failing.
The remote is working (six VMs back up without issue).

It seems XO has trouble cleaning up the backup directory:

Here is the full backup log:
{
"data": {
"mode": "delta",
"reportWhen": "failure"
},
"id": "1780936394962",
"jobId": "21bbca2a-59ad-4fa2-bb73-f60c1e9216e7",
"jobName": "VM-Backup",
"message": "backup",
"scheduleId": "15044139-f4b7-4078-92bc-891e9b641d52",
"start": 1780936394962,
"status": "failure",
"tasks": [
{
"id": "0mq5fjqwf-22j12nbve5e",
"start": 1780936397295,
"status": "failure",
"tasks": [
{
"id": "0mq5fjqwy-ymsrhlbl67s",
"start": 1780936397314,
"status": "success",
"warnings": [
{
"data": {
"path": "/xo-vm-backups/011114a9-b622-92eb-581f-36f961efe622/vdis/21bbca2a-59ad-4fa2-bb73-f60c1e9216e7/63a73be5-96ff-4c25-b7dd-c93284719916/20260608T150007Z.vhd",
"error": {}
},
"message": "failed to read disk parent info"
}
],
"end": 1780936399044,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fku8o-i3wwl2zfkza",
"start": 1780936448280,
"status": "success",
"warnings": [
{
"data": {
"path": "/xo-vm-backups/011114a9-b622-92eb-581f-36f961efe622/vdis/21bbca2a-59ad-4fa2-bb73-f60c1e9216e7/63a73be5-96ff-4c25-b7dd-c93284719916/20260608T150007Z.vhd",
"error": {}
},
"message": "failed to read disk parent info"
}
],
"end": 1780936454149,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936454187,
"result": {
"code": "VDI_IN_USE",
"params": [
"OpaqueRef:ce1e2c1b-9b52-d813-88fc-18513a51306f",
"destroy"
],
"task": {
"uuid": "173eb901-7e4b-90d5-48cb-1306493d61d5",
"name_label": "Async.VDI.destroy",
"name_description": "",
"allowed_operations": [],
"current_operations": {},
"created": "20260608T16:34:06Z",
"finished": "20260608T16:34:08Z",
"status": "failure",
"resident_on": "OpaqueRef:8a7ca417-3c20-466f-8ebc-f19cbb63384f",
"progress": 1,
"type": "<none/>",
"result": "",
"error_info": [
"VDI_IN_USE",
"OpaqueRef:ce1e2c1b-9b52-d813-88fc-18513a51306f",
"destroy"
],
"other_config": {},
"subtask_of": "OpaqueRef:NULL",
"subtasks": [],
"backtrace": "(((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 5212))((process xapi)(filename fun.ml)(line 33))((process xapi)(filename fun.ml)(line 38))((process xapi)(filename ocaml/xapi/helpers.ml)(line 1821))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 5201))((process xapi)(filename ocaml/xapi/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
},
"message": "VDI_IN_USE(OpaqueRef:ce1e2c1b-9b52-d813-88fc-18513a51306f, destroy)",
"name": "XapiError",
"stack": "XapiError: VDI_IN_USE(OpaqueRef:ce1e2c1b-9b52-d813-88fc-18513a51306f, destroy)\n at XapiError.wrap (file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/_XapiError.mjs:16:12)\n at default (file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/_getTaskResult.mjs:13:29)\n at Xapi._addRecordToCache (file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/index.mjs:1078:24)\n at file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/index.mjs:1112:14\n at Array.forEach (<anonymous>)\n at Xapi._processEvents (file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/index.mjs:1102:12)\n at Xapi._watchEvents (file:///opt/xo/xo-builds/xen-orchestra-202606081816/packages/xen-api/index.mjs:1275:14)\n at process.processTicksAndRejections (node:internal/process/task_queues:104:5)"
},
"message": "backup VM",
"data": {
"id": "011114a9-b622-92eb-581f-36f961efe622",
"type": "VM",
"name_label": "ITServices"
}
},
{
"id": "0mq5fjqwh-hhuivj17nmu",
"start": 1780936397297,
"status": "success",
"tasks": [
{
"id": "0mq5fjqx1-nwsciopgbxh",
"start": 1780936397317,
"status": "success",
"end": 1780936399283,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fjsl1-29b0qivtg74",
"start": 1780936399477,
"status": "success",
"end": 1780936401784,
"result": "0d56ceb1-a627-1c97-e25d-ab641d5d3317",
"message": "snapshot"
},
{
"id": "0mq5fjud4-an4b4yrzygv",
"start": 1780936401784,
"status": "success",
"tasks": [
{
"id": "0mq5fjvy2-qfouxpigsx",
"start": 1780936403834,
"status": "success",
"end": 1780936418474,
"result": {
"size": 652498432
},
"message": "transfer",
"data": {
"progress": 99
}
},
{
"id": "0mq5fkcfx-f456mkr06ov",
"start": 1780936425213,
"status": "success",
"end": 1780936426551,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936428639,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780936428639,
"message": "backup VM",
"data": {
"id": "44ae09b4-47d2-ab1c-e187-3020f0626d74",
"type": "VM",
"name_label": "Unifi_OS_Server",
"progress": 0
}
},
{
"id": "0mq5fjqwi-vahgy7faqum",
"start": 1780936397298,
"status": "success",
"tasks": [
{
"id": "0mq5fjqx0-7cex64zgf22",
"start": 1780936397316,
"status": "success",
"end": 1780936399539,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fjswh-ubn0k70kwtb",
"start": 1780936399889,
"status": "success",
"end": 1780936402821,
"result": "5dc9f1c0-e790-c9cd-1309-ec58f64beedb",
"message": "snapshot"
},
{
"id": "0mq5fjv5x-4cl03s5xrcs",
"start": 1780936402821,
"status": "success",
"tasks": [
{
"id": "0mq5fjwif-1eoxjx0ass2",
"start": 1780936404567,
"status": "success",
"end": 1780936434954,
"result": {
"size": 1021871616
},
"message": "transfer",
"data": {
"progress": 100
}
},
{
"id": "0mq5fkklg-ubob0jzzxb",
"start": 1780936435780,
"status": "success",
"end": 1780936441161,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936441176,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780936441176,
"message": "backup VM",
"data": {
"id": "e764ee17-19de-29fc-802f-e97385d0635d",
"type": "VM",
"name_label": "Graylog",
"progress": 0
}
},
{
"id": "0mq5fjqwi-eyuvf4i18bv",
"start": 1780936397298,
"status": "success",
"tasks": [
{
"id": "0mq5fjqwx-kykb7016aud",
"start": 1780936397313,
"status": "success",
"end": 1780936399348,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fjsl0-1jdpq922616",
"start": 1780936399476,
"status": "success",
"end": 1780936400960,
"result": "d403776f-e797-5af2-2428-35963e1af590",
"message": "snapshot"
},
{
"id": "0mq5fjtq9-o2xr8f7gelf",
"start": 1780936400961,
"status": "success",
"tasks": [
{
"id": "0mq5fjvcs-7jaedl39bym",
"start": 1780936403068,
"status": "success",
"end": 1780936471627,
"result": {
"size": 4130425344
},
"message": "transfer",
"data": {
"progress": 100
}
},
{
"id": "0mq5fld9j-pzmbsqgh56",
"start": 1780936472935,
"status": "success",
"end": 1780936476387,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936476416,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780936476416,
"message": "backup VM",
"data": {
"id": "a329942c-10e9-70d4-4155-95c70e6c25c8",
"type": "VM",
"name_label": "XenOrchestra_Prod",
"progress": 0
}
},
{
"id": "0mq5fkf41-weadm4wk1xp",
"start": 1780936428673,
"status": "success",
"tasks": [
{
"id": "0mq5fkf5n-2ponux8v3bm",
"start": 1780936428731,
"status": "success",
"end": 1780936430525,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fkgor-fwufkt4zm1f",
"start": 1780936430715,
"status": "success",
"end": 1780936431803,
"result": "649ca352-0aab-dbd9-d75b-aae8748fb6a8",
"message": "snapshot"
},
{
"id": "0mq5fkhiz-u5o8qh9lpoh",
"start": 1780936431803,
"status": "success",
"tasks": [
{
"id": "0mq5fklec-1glqm0n1642",
"start": 1780936436820,
"status": "success",
"end": 1780936437167,
"result": {
"size": 43008
},
"message": "transfer",
"data": {
"progress": 100
}
},
{
"id": "0mq5fkn5y-g2hl3nyuc2f",
"start": 1780936439110,
"status": "success",
"end": 1780936440668,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936440676,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780936440676,
"message": "backup VM",
"data": {
"id": "8ec416aa-4885-b82b-e9ac-24df17672916",
"type": "VM",
"name_label": "RustDesk",
"progress": 0
}
},
{
"id": "0mq5fkodk-tkwoc2uthf",
"start": 1780936440680,
"status": "success",
"tasks": [
{
"id": "0mq5fkodq-e3kpftr1kr",
"start": 1780936440686,
"status": "success",
"end": 1780936443708,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fkqvi-egmgr1fdy0t",
"start": 1780936443918,
"status": "success",
"end": 1780936447236,
"result": "8bec4422-5b08-5410-eff2-4f8d8c6d0ac7",
"message": "snapshot"
},
{
"id": "0mq5fktfo-iuhc7r90uvc",
"start": 1780936447236,
"status": "success",
"tasks": [
{
"id": "0mq5fkv4r-dz2833iynb",
"start": 1780936449435,
"status": "success",
"end": 1780936457597,
"result": {
"size": 180524032
},
"message": "transfer",
"data": {
"progress": 100
}
},
{
"id": "0mq5fl3af-hde5wx2577",
"start": 1780936460007,
"status": "success",
"end": 1780936461168,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936461396,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": false,
"type": "remote"
}
}
],
"end": 1780936461396,
"message": "backup VM",
"data": {
"id": "db880663-5c76-ad1d-ce9c-126db11c4822",
"type": "VM",
"name_label": "Nextcloud",
"progress": 0
}
},
{
"id": "0mq5fkorf-psnurqj48qp",
"start": 1780936441179,
"status": "success",
"tasks": [
{
"id": "0mq5fkork-ui1kc8oo0i9",
"start": 1780936441184,
"status": "success",
"end": 1780936443835,
"result": {
"merge": false,
"size": 0
},
"message": "clean-vm"
},
{
"id": "0mq5fkr16-ve61u2lg6yr",
"start": 1780936444122,
"status": "success",
"end": 1780936448319,
"result": "4436636b-5f56-347c-45d9-339dfbde7809",
"message": "snapshot"
},
{
"id": "0mq5fku9r-4i3dvxltfoh",
"start": 1780936448319,
"status": "success",
"tasks": [
{
"id": "0mq5fkuzl-zbg2ht2gowa",
"start": 1780936449249,
"status": "success",
"end": 1780936568326,
"result": {
"size": 8392878592
},
"message": "transfer",
"data": {
"progress": 99
}
},
{
"id": "0mq5fnfo4-lh7uyjgbpw",
"start": 1780936569364,
"status": "success",
"end": 1780936570543,
"result": {
"merge": true,
"size": 0
},
"message": "clean-vm"
}
],
"end": 1780936570549,
"message": "export",
"data": {
"id": "442a4fc2-70ff-474d-aae9-88d0249ef5f2",
"isFull": true,
"type": "remote"
}
}
],
"end": 1780936570549,
"message": "backup VM",
"data": {
"id": "d01f5065-7ce2-cdfe-a11d-066000777c63",
"type": "VM",
"name_label": "Netbox",
"progress": 0
}
}
],
"end": 1780936570551,
"infos": [
{
"data": {
"vms": [
"44ae09b4-47d2-ab1c-e187-3020f0626d74",
"e764ee17-19de-29fc-802f-e97385d0635d",
"011114a9-b622-92eb-581f-36f961efe622",
"a329942c-10e9-70d4-4155-95c70e6c25c8",
"8ec416aa-4885-b82b-e9ac-24df17672916",
"db880663-5c76-ad1d-ce9c-126db11c4822",
"d01f5065-7ce2-cdfe-a11d-066000777c63"
]
},
"message": "vms"
}
]
}
Maybe this is linked to the thread by @andrew :
I upgraded today to commit 3500d, rebooted the XO VM and retried the backup. Still failing.
Thanks for the assistance.
Regards,
Marc
Hi @McHenry .
You should obfuscate the IP address in your first screenshot. Also check your profile and private chat 
Hope everyone had a joyful Christmas and I wish everyone the best for 2026.
Regards,
Marc
Hi.
I am a little late to the party.
I have currently a stable situation with a Netbox 4.4.3 installation and XCP-NG 8.3 (up-to-date).
Which exact commit for XenOrchestra fixed the issue for me personally I cannot tell. Now it is syncing just fine.
Regards
Marc