Potential bug with Windows VM backup: "Body Timeout Error"

MajorP93

Hey!
Any news in this regard?
Would be really interested in testing this fix in our lab environment if possible.
Thanks and best regards!

olivierlambert

Let me reping @stormi or @Team-XAPI-Network

psafont

@olivierlambert Because Andriy did quite a bit of work before this merge, xcp-ng depends on xenserver releasing the package to the clients before we can integrate it into xcp-ng. I'd say we can release the package February at the earliest

MajorP93

@psafont @olivierlambert As you previously mentioned february and we reached it as of now - I was wondering: do you have any update on when you plan to push the fix to XCP-ng repositories?

Thanks and best regards

psafont

@MajorP93 It's being packaged at the moment. between this and the testing that needs to be done it might take a couple of weeks to be released, but I can't promise anything yet

RS

I had same problem, about last 2 weeks, but is is about Xen update, after apply last update, Backup of Windows VMs works again.

gduperrey

The update mentioned by Pau should has just been released along with other updates. For more information, you can consult the corresponding blog post: https://xcp-ng.org/blog/2026/03/10/march-2026-maintenance-updates-for-xcp-ng-8-3-lts/

CodeMercenary

Amazing timing. I have been having this issue with a VM I just set up and I came here to find out if this is a known problem, only to discover that the 97 patches I have been planning to install tonight are going to fix it.

nikade

Did anyone try to patch xo and xcp-ng to the latest and did you have any luck with backups since then?
Im on XO (Xen Orchestra, commit 449e7 and Master, commit 2aff8) and the latest xcp-ng 8.3 with all patches installed and im still seeing the "Body timeout error" on 4/8 vm's:

Some works tho:

Observium has a 20Gb VDI with 15Gb used, jupiter has a 20Gb VDI with 12Gb used.
Let me know if you want any logs from my XO or XCP and I'll happily provide them.

CodeMercenary

@nikade I did install the 97 XCP patches and that night the VM that was failing to backup was able to successfully backup. It had a 500GB secondary drive that was formatted but totally empty.

I had not yet patched my XO from source to the latest, it was maybe 24 commits behind. On Friday I updated it so I will find out on Monday if those backups continued to work but I assume they did.