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  • All Xen related stuff

    616 Topics
    6k Posts
    henri9813H
    Hello, When i boot a Rocky Linux 10 with the latest kernel, it's very slow on cpu XXX spinlock event irq. Someone have the same issue ? [image: 1780672780770-6a83318c-cef3-4ad3-821f-be989c23695f-image.jpeg] [image: 1780672794096-45b08065-ab42-402e-a106-ac7984f46794-image-resized.jpeg] Thanks !

  • The integrated web UI to manage XCP-ng

    29 Topics
    369 Posts
    acebmxerA
    @pdonias confirmed... [image: 1780065202934-screenshot-2026-05-29-103255.png]

  • Section dedicated to migrations from VMWare, HyperV, Proxmox etc. to XCP-ng

    126 Topics
    1k Posts
    C
    Hi, everyone Thank you for your help. I had a flux that was blocked by our firewall. The button worked after that. But it doesn't explain why I lost this configuration and had to reinstall it. Thanks again.

  • Hardware related section

    169 Topics
    2k Posts
    J
    @acebmxer Yeah, it does not show up as an available device in XOA or XCP-ng Center. Just listed when running lspci

  • The place to discuss new additions into XCP-ng

    253 Topics
    3k Posts
    bvitnikB
    @dthenot Aaaaah, so it even depends on the SR type. That also explains the difference I'm seeing in my lab with 8.1 vs 8.3. The first one uses LVM backed SR and the other one uses file system (ext) backed SR. I'll have to investigate this a little bit more. Was image-format key added by you (XCP-ng team) and is specific to XCP-ng or was it used at any point in XenServer also?
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  • U

    Nested virtualization

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    M
    @olivierlambert Can you provide insights? Is nested virtualization as in running Hyper-V inside a XCP-ng VM expected to work?
  • U

    Hot-adding a resource

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    U
    Thank you all for your answers—now it's clear.
  • okynnorO

    xcp-ng patches install fail

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    P
    https://xcp-ng.org/forum/topic/11951/just-fyi-current-update-seams-to-break-nut-dependancies
  • D

    XCP-ng center 25.04.0 does not see guest-tools.iso

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    D
    Thank you for the input everyone. I've tested XenAdminQt and it sees iso library, thank you for advice! Reason for using XCP-ng center is ease of use/simplicity during quick testing deployments in comparison to XO.
  • acebmxerA

    Issues with new vm after latest 8.3 updates (priror to release)

    Solved
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    4 Posts
    430 Views
    olivierlambertO
    No worries, it happens! Glad you found the problem
  • C

    USB-Passthrough does not survive reboot of VM

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    C
    @DustinB doesn't it use the exact same mechanism? I have to find out.
  • A

    Issues joining pool with less pif on the newest host

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    A
    @semarie This pool is still on 8.2.1, we are trying to add this host in order upgrade with little to no downtime.
  • ditzy-oliveD

    Deploying firewall to XCP-NG with rescue

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    ditzy-oliveD
    @bleader thanks for the tip. You see my knowledge in redhat based systems is almost non existant. Think I'm almost 99% debian and 1% ubuntu (and that not by choice) So I will take care of redeploying the script as soon as I upgrade, should be easily noticeable since monitoring will loose access and yell at me.
  • O

    Every virtual machine I restart doesn't boot.

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    D
    @nikade said in Every virtual machine I restart doesn't boot.: @DustinB yeah im guessing the VDI isn't attached to the VM for some reason, based on the screenshot. Im also wondering if he ever rebooted the VM's after installing them with PXE Right, it's a likely answer... but even then I would've expected his PXE server to just restart the installation process all over again... assuming that the disk is attached to the VM etc and that PXE boot isn't disabled automatically like it is with an ISO after first boot. haha
  • nikadeN

    Hosts fenced, new master, rebooted slaves not reconnecting to pool

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    No one has replied
  • G

    HP DL380 Gen 8 - XCP-ng 8.1.0 Failing to update microcode

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  • O

    VM state is halted but should be running

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    DanpD
    @olivierlambert New thread is here
  • acebmxerA

    Error installing Ubuntu 24.04 on new xcp-ng host.

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    A
    @malemburg Kernel versions: 24.04 - Linux ubuntu-server 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux 24.04.3 - Linux ubuntu-server 6.8.0-71-generic #71-Ubuntu SMP PREEMPT_DYNAMIC Tue Jul 22 16:52:38 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux This is what is running after all the updates: Linux pxe000 6.8.0-100-generic #100-Ubuntu SMP PREEMPT_DYNAMIC Tue Jan 13 16:40:06 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux I have this in my autoinstall to install the tools late-commands: - echo 'deb [trusted=yes] https://gitlab.com/api/v4/projects/xen-project%252Fxen-guest-agent/packages/generic/deb-amd64/ release/' > /target/etc/apt/sources.list.d/xen-guest-agent.list - curtin in-target -- apt update - curtin in-target -- apt install -y xen-guest-agent And this to get all the updates: updates: all
  • N

    Booting to Dracut (I trusted ChatGPT)

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    M
    I know this is old but I had a similar issue. In the end I told dracut NOT to reassemble my raid array which allowed the system to boot perfectly after. I have no idea why it tries to assemble the same array two but on the second seems to be important
  • acebmxerA

    VM time ahead by 5 hours

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    acebmxerA
    @dinhngtu I think it just have been a bad migration or the Win 11 Template did other things to the windows 10 os. Since new test vm did not show the time issues, and a fresh migration of the vim with correct template selected did not have the issues either. I dont know but maybe there is a way to put detect the correct VM template or make note. I didnt think using the win 11 template would have caused issues since using the "wrong" template on vm creation does not have the same effect.
  • B

    Windows 11 (Win11_25H2_English_x64.iso) Fails to Install

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    acebmxerA
    @busthead said in Windows 11 (Win11_25H2_English_x64.iso) Fails to Install: It appears I missed the key press to start setup Dont you know your are not suppose to blink when doing working. You might miss something Glad you figured it out.
  • D

    Create new virtual machine?

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    7 Posts
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    acebmxerA
    @drwhite85 I suggest watching some youtube videos about xcp-ng. I guest Lawrence Systems - https://www.youtube.com/watch?v=2wMmSm_ZeZ4 He has other videos that go into more depth
  • R

    botched pool patching and now we can't change pool master

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    808 Views
    R
    Resolved. Patched the rest of the hosts. Restarted all the toolstacks for good measure. I can move the master role now, and deploy new VMs.
  • D

    Lost VMs disk after using new SR

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    D
    Resolved by rebuild, and doing VM backup and metadata to trunas dataset.... Start Backup earlier. Be better then me
  • ?

    Red Hat Linux 10.1 ISO Won't Boot in UEFI Mode

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    J
    Actually Alma Linux does have a variant for v2 CPUs so they can run 10.0. Just look for x86_64 v2 on the downloads page.