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  • All Xen related stuff

    616 Topics
    6k Posts
    A
    @laszlobortel we've seen far less of this issue since my last message, not sure what made it better and when. But we're still making sure to reboot monthly (during patching, as we normally do anyways) + after live migration, and that helps. We don't use load balancing, so once a VM is staying put on one hypervisor, there is no issue. Live migration and time triggers the issue for us. What changed in our infra is upgrade to XCP-NG 8.3 and moving to XOSTOR as shared storage. We've seen no issue with AlmaLinux 9 and CloudLinux 9 at all. They also perform better I/O wise.

  • 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
    poddingueP
    That leftover NIC is probably a stale PIF that XAPI is still holding, even though the card is physically gone, and the Refresh button re-scans rather than removing it. The docs have proper "remove a physical NIC" steps that end in forgetting the old PIF with xe pif-forget: https://docs.xcp-ng.org/networking/#remove-a-physical-nic. For the GPU side, the PCI passthrough flow (hiding the device from dom0, then assigning it) is here: https://docs.xcp-ng.org/compute#detaching-a-pci-device. If the GPU still won't show up as assignable once the stale PIF is gone, it might be worth a mention to @Team-Hypervisor-Kernel.

  • The place to discuss new additions into XCP-ng

    253 Topics
    3k Posts
    nathanael-hN
    @pszelestey Hi, yes, we've pushed an initial commit and a few more here https://github.com/vatesfr/cluster-api-provider-vates/ it is moging every day. Ping us in Matrix/Discord devops if you want to chat live while trying
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  • B

    yum update, no more free space?

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    I
    @bloodyskullz If you still see the old ISO SR, the easiest way to migrate is simply by creating a new one and migrate the ISOs through XO to the new one. In regards to deletion of the old SR you need to check if it really is mapped to another drive or if the mapping was not working and it filled / if so, you might not be able to delete it
  • C

    Guide to Replace Tianocore UEFI Logo

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  • robytR

    update via yum or via xoa?

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    robytR
    @bleader said in update via yum or via xoa?: yes you're basically doing an RPU manually. But it is indeed odd that the process is stuck at 0%, it should be fairly fast to do the install patches, no errors in the logs? i've another install all patches and install all. Now i'll use rpm update and see if speed is the same or not
  • O

    Pool Tasks Don't Complete? Major Issues...

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    O
    @Danp Yes to both. I've probably restarted the toolstack at least a dozen times, mostly to clear hung tasks. I did notice some weird issues with a secondary SR being disconnected on xcp02, (one of 10 hosts, 9 after I ejected and forgot xcp01), but there's no disks on it. It wasn't being used for anything at all (yet), and it's fine on all the rest. That does lead me to think maybe it was a power bump that rebooted a switch or something though. Maybe it caused some kind of hangup with xcp01 and xcp02, and since xcp01 was the pool master, it cascaded to the other issues I've seen? Could that cause the VM's that were originally running on xcp02 to die and not be able to be recovered easily?
  • K

    A task keeps poping up every second or so

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    olivierlambertO
    In any case, you can ignore it.
  • henri9813H

    VM migration is blocked during backup whereas no backup in progress

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    henri9813H
    @Danp Okay, you're a genius, I upgrade this morning after my backup. So that could explain my issue. the mentioned thread is exactly my issue, but I didn't find it when I was searching about my issue. Thanks for all !
  • D

    can't start vm after host disconnect

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    olivierlambertO
    No, from the XCP-ng point of view, the VM is still running without any interruption.
  • J

    XCP-ng Documentation - Roadmap

    Solved xcp-ng doc roadmap question out of date questions
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    J
    @olivierlambert @Marc-pezin Thank you very much for sorting this out!
  • N

    problem with export or moving VM between pools

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    N
    @nick-lloyd I like your interpretation.
  • A

    Upgrading to 2.5GB NICs and Troubleshooting Driver Issues on XCP-ng

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    A
    @aghering You could try compiling it yourself on 8.1... I don't have an 8.1 test/build system.
  • N

    Optimization of Virtual Machines

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    E
    @NerdsOrder66 Ah, good question... My most recent environment included a Windows Server with 100+ RDP users. There wasn't anything special for optimization there aside from giving it a bunch of RAM/CPU resources, but YMMV.
  • T

    Recurring crashes on VM

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    T
    @olivierlambert No, the only thing I get with xl dmesg on the host, for some time back, are random brief reports of individual CPUs running above temperature threshold and then being clocked down, and then resolving. Nothing else.
  • K

    VHD import fails

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  • K

    import vhd

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    olivierlambertO
    I suppose you mean OVA, right? Anyway, good news
  • D

    Very scary host reboot issue

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    M
    @olivierlambert said in Very scary host reboot issue: I am very very busy so I don't have time to make a search by myself but maybe someone else around with few minutes could point you to the blog post talking about this edit: found it in few sec luckily: https://xcp-ng.org/blog/2024/01/26/january-2024-security-update/ Thanks. I'll check this out.
  • M

    This topic is deleted!

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  • B

    PVHv2 - how to configure VM

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    olivierlambertO
    Indeed, but it's a bit old, and I would say for many reasons HVM with PV drivers is still the way to go for classical server virtualization mode
  • D

    Unable to unblock a vm for reversion of snapshot

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    D
    @Danp I tried some of the xe commands listed in that post like xe vm-param-clear and xe vm-param-remove and wasn't successful.
  • S

    Problems with existing pool, problems migrating to new pool

    Solved
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    12 Posts
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    S
    @tjkreidl Yeah, thanks. 12 hours, 68 VDIs to coalesce down to 10. Quite the improvement.
  • L

    Oops! We removed busybox

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    olivierlambertO
    Interpreting vulnerability scanners is a hard task. They are often screaming for "common cases", but remember XCP-ng is an appliance, so there are many cases where things do not apply. Happy to help you further via our pro support to answer in details your concerns