XO (self build) tasks spamming

[Danp]

@marcoi Hard to say because you haven't really given us much to go on. There are various things you could try --

• Deploy a new VM with XO from sources and see if you get the same behavior

• Investigate the XO tasks to see if you can find some commonality

• You can wait to see if others start reporting this same issue

What version of Node is installed on this VM?

[marcoi]

Ill just dump some info maybe something might help.

OS is Ubuntu 24.04.3 LTS (GNU/Linux 6.8.0-78-generic x86_64)
4 CPU / 4GB Ram
Xen Orchestra, commit c1c3b
Master, commit c1c3b

text when opening up a task- so far they all seem similar with different ids.

{
  "error": "no such task 0merqc0ye",
  "data": {
    "id": "0merqc0ye",
    "type": "task"
  }
}

{
  "error": "no such task 0merqdzm2",
  "data": {
    "id": "0merqdzm2",
    "type": "task"
  }
}

One error in the log

host.getSchedulerGranularity
{
  "host": "4214a8b3-4628-43a6-b10d-c40503dd9694"
}
{
  "code": 1,
  "data": {
    "id": "4214a8b3-4628-43a6-b10d-c40503dd9694",
    "type": "host"
  },
  "message": "no such host 4214a8b3-4628-43a6-b10d-c40503dd9694",
  "name": "XoError",
  "stack": "XoError: no such host 4214a8b3-4628-43a6-b10d-c40503dd9694
    at noSuchObject (/opt/xo/xo-builds/xen-orchestra-202508251601/packages/xo-common/api-errors.js:26:11)
    at Xo.getObject (file:///opt/xo/xo-builds/xen-orchestra-202508251601/packages/xo-server/src/xo.mjs:88:13)
    at file:///opt/xo/xo-builds/xen-orchestra-202508251601/packages/xo-server/src/xo-mixins/api.mjs:172:25
    at /opt/xo/xo-builds/xen-orchestra-202508251601/node_modules/lodash/_createBaseFor.js:17:11
    at baseForOwn (/opt/xo/xo-builds/xen-orchestra-202508251601/node_modules/lodash/_baseForOwn.js:13:20)
    at /opt/xo/xo-builds/xen-orchestra-202508251601/node_modules/lodash/_createBaseEach.js:17:14
    at forEach (/opt/xo/xo-builds/xen-orchestra-202508251601/node_modules/lodash/forEach.js:38:10)
    at Xo.call (file:///opt/xo/xo-builds/xen-orchestra-202508251601/packages/xo-server/src/xo-mixins/api.mjs:163:3)
    at Api.#callApiMethod (file:///opt/xo/xo-builds/xen-orchestra-202508251601/packages/xo-server/src/xo-mixins/api.mjs:411:50)"
}

Seems to be a host that i am testing pcie pass through with. I did redo that host install and used the same name/ip address. Not sure if this is just an error not related to task list issue.

[marcoi]

when i use command line

marco@xen:/opt/xo/xo-server$ xo-cli rest get tasks/0merqp0hz
404 Not Found
✖ {
  "error": "no such task 0merqp0hz",
  "data": {
    "id": "0merqp0hz",
    "type": "task"
  }
}

[flakpyro]

@marcoi Same issue here with the latest commit (c1c3b). Rolling back to 4e3c1 from 2025-08-06 which i was running previously resolves the issue. Not sure whats going on or when it started happening exactly as i usually only update once a month.

Edit: Updated to commit 4eeae and also do not experience the task spam. So im guessing this is something that happened during the commits today (Aug 25, 2025)

Edit 2: Tested on both my homelab install and a second test environment install and both seem to exhibit this issue on the latest commit.

[marcoi]

@flakpyro I went back a few versions to Xen Orchestra, commit 70d59 and no longer seeing the task spamming.
Guess I will disable the nightly update schedule for now. @Danp let me know if you need me to go to this version to test something or try a new version. etc..

[olivierlambert]

It's been reproduced internally and will be fixed ASAP

[MathieuRA]

Hi.
A PR is open: https://github.com/vatesfr/xen-orchestra/pull/8900

If anyone can confirm that the issue is fixed, that would be great. Thanks.

MathieuRA opened this pull request in vatesfr/xen-orchestra

closed fix(@xen-orchestra/rest-api): fix watch tasks #8900

[olivierlambert]

Thank you for the PR @MathieuRA !

[flakpyro]

@olivierlambert On my test instance which is admittedly not very busy (only 2 hosts) this fixed the issue!

[olivierlambert]

Thanks for the feedback!

[marcoi]

is this in the latest build or do i need to download a separate branch etc? I'm using a script someone made to build my XO so not sure how to do a separate branch but if the change made it into main build i can download an update and test as well.

[olivierlambert]

@marcoi in a branch at the moment. Ask your script provider to tell you how to switch to a branch

[marcoi]

@olivierlambert
Okay i got it I am running
Xen Orchestra, commit 09f67
Master, commit 35428

I will watch it and see how the tasks issue goes

Update 2: been about 20 mins and nothing showing up in the task list.

[acebmxer]

I just updated to Commit d1577 and I seam to have the bug now.

[olivierlambert]

@acebmxer The fix is inside the branch mra-rest-fix-task, not yet on master.

[MathieuRA]

Fix available on master

[acebmxer]

Commit a4410 fix task spam issue.

[marcoi]

looks good
Xen Orchestra, commit 384bb
Master, commit 384bb

thanks for quick fix