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.

Screenshot 2025-08-26 111446.png

Screenshot 2025-08-26 111509.png

Screenshot 2025-08-26 111540.png

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