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  • All Xen related stuff

    627 Topics
    6k Posts
    H
    @dinhngtu said: dinhngtu VATES 🪐 XCP-NG TEAM a day ago @hrvojer There are many bugs in older versions of the Xen PV drivers. I suggest running Windows without guest tools and drivers if you can take the performance and functionality hit (no suspend/migration on UEFI VMs, no metric reporting, etc). Thanks @dinhngtu, appreciated. Running without PV drivers is hard for us: this is an I/O-heavy production SQL Server and we already had timeout problems before adding RAM, so I'm worried emulated disk performance would hurt more than an occasional crash. Our medium-term plan is to migrate SQL to a new VM with a supported Windows Server and current tools. Until then, a few follow-up questions: Is there any official place to still get XenServer VM Tools 9.2.3 (or whichever last version works on 2012 R2)? Would an older XCP-ng PV driver release (e.g. 8.2.2.200) likely be any better here, or is it the same xenvbd code base? One more detail I missed: in the same Feb 2026 change we also enabled "Lock Pages in Memory" for the SQL Server service account (together with 16 -> 64 GB RAM). Is there any known issue between old xenvbd and locked pages / large guest memory? Meanwhile we've capped SQL max server memory at 32 GB as a stopgap.

  • The integrated web UI to manage XCP-ng

    29 Topics
    367 Posts
    olivierlambertO
    The same as @john.c and also XO Lite tends to be less a priority because less critical than the full fledged XO (the priority is to replace entirely XO 5 in the next releases). Why you would need XO Lite outside basic actions? It's mostly meant to bootstrap XO itself and do basic operations (which is already the case, at least with many basic features already). Initially, the goal hasn't moved: replacing XenCenter. We are moving in that direction, but again, I think it's more important to get XO 6 finished first. I'm curious to understand more the use case of XO Lite in your context @unreal-shizzle ?

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

    132 Topics
    1k Posts
    J
    @mpiton Thanks for a fantasticly quick answer, and detailed as well. I will test this immediately! Update: I can confirm that this was indeed the problem!

  • Hardware related section

    178 Topics
    2k Posts
    S
    @yannsionneau Yes it works Thank you very much, great job Tested on Ryzen 9 9950X / AMD Raphael iGPU Tested the new experimental iGPU passthrough packages. - CPU: AMD Ryzen 9 9950X - iGPU: AMD Raphael (1002:13c0) - XCP-ng: 8.3 - Guest: Bazzite AMD - VBIOS: extracted from the ACPI VFCT and supplied as /root/vbios.bin - iGPU passthrough: working - AMD amdgpu driver: working - Physical HDMI output: working - Bazzite desktop displayed successfully on the physical HDMI port. Ubuntu 24.04.2 was able to initialize the GPU and Vulkan/RADV detected the Raphael iGPU, but the HDMI output went black when the graphical desktop started. Bazzite worked and provided a stable display output. So on my Ryzen 9 9950X, the experimental packages appear to successfully enable Raphael iGPU passthrough and physical HDMI output.

  • The place to discuss new additions into XCP-ng

    255 Topics
    3k Posts
    dicode-nlD
    New version: https://github.com/dicode-nl/xcp-ng-ceph-rbd/releases/tag/v20260903 This one includes native Ceph rbd SXM over SMAPIv3! GitHub updated with the latest commits and changes. As always, use with caution. I did run a lot of test scenario's but please do test yourself and let me know your findings!
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  • S

    Problems with existing pool, problems migrating to new pool

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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
  • G

    Rebuild boot / OS drive

    community os rebild disaster-rec
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    G
    @Danp So, that's the "best" way? Backup the meta-data with XOA, rebuild the OS drive - add the "new" server into XOA and restore the meta-data back to the new install? (I'm not doubting it is, just wanting to be sure we're understanding each other fully.) Seems straight-forward - but there's a ton of things I've done over the years that "seemed" pretty straight-forward that turned out to be anything but, and at least occasionally found I had no way back.
  • M

    Re enabling NIC without rebooting host

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    BenjiReisB
    @mmancina Hi you can try to call xe pif-scan host-uuid=<uuid of your host> , the NIC should appear after that.
  • MathieuM

    Endless Xapi#getResource /rrd_updates in tasks list

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    1
    Spoke too soon. Still getting them... Just much slower and father apart.. about 5-10 a day
  • W

    8.3beta2 dom0 kernel panic, possibly triggered by over-mtu packet?

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    W
    @bleader No, the opnsense box itself doesn't have wireguard (or anything else VPN-ish) running on it. It's mostly just a NAT with the normal variety of DHCP, DNS, ... services running on it.
  • D

    After installing updates: 0 bytes free, Control domain memory = 0B

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    nikadeN
    @Dataslak said in After installing updates: 0 bytes free, Control domain memory = 0B: @nikade @olivierlambert @stormi @Danp @yann Just wanted to say to you all: Thank you for your contributions and kind helpful assistance which has helped me through this crisis. I would have been in deep trouble without you. I respect your expertise, and appreciate deeply that you are working so hard to help us dumb users. I have learned a lot, and hope one day to become skilled enough to at least help other new users on this forum. Best wishes Aslak Happy everything worked out, this is what this community is all about. I've gotten a lot of help and given some too, it's all about helping out with the things that you can. With time you'll be able to help out more and more and more
  • M

    8.3 beta, crashed Windows11 VM when trying to snapshot with memory

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    stormiS
    Using dynamic memory is known to be prone to causing occasional issues. Thanks for the feedback. Oh, by the way, regarding vTPM and snapshots, we finally established that it's fully supported by XenServer 8 and that the documentation was just out of date.
  • C

    cluster slave no connection to pool

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  • A

    Guest tools in nested XCP-ng

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    olivierlambertO
    Hi, It's not possible.
  • F

    XCP/Vates support hours

    support xcp-ng xostor
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    olivierlambertO
    Hi, No.
  • J

    Hosts fencing after latest 8.2.1 update

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    J
    Right, so yeah I did just that - disabled HA and have been keeping an eye on the logs as well as general performance in the env. Glad to know my actions align with your recommendations at least There are a couple of hosts that get a lot of these sorts of messages in the kern.log: Apr 25 08:15:33 oryx kernel: [276757.645457] vif vif-21-3 vif21.3: Guest Rx ready Apr 25 08:15:54 oryx kernel: [276778.735509] vif vif-22-3 vif22.3: Guest Rx stalled Apr 25 08:15:54 oryx kernel: [276778.735522] vif vif-21-3 vif21.3: Guest Rx stalled Apr 25 08:16:04 oryx kernel: [276788.780828] vif vif-21-3 vif21.3: Guest Rx ready Apr 25 08:16:04 oryx kernel: [276788.780836] vif vif-22-3 vif22.3: Guest Rx ready Am I wrong to attribute this to issues within specific VMs (i.e. not a hv performance issue)? I know one of the VMs that causes these is a very old centos 5 testing VM one of my devs use and the messages stop when it's powered down. Is there any way to easily associate those vifs with the actual VMs they are attached to? My google-foo failed me for that. Other than that, I noticed my nic firmware is a bit old on the X710-da2's I use so I'm going through and upgrading those with no noticeable changes. I'm fairly hesitant to re-enable HA without tracking down the root cause.
  • D

    Stuck in maintenance mode after joining pool.

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    DanpD
    @DwightHat said in Stuck in maintenance mode after joining pool.: When I try to look at the host in Xen Orchestra it just says "An error has occurred". Check to browser's Dev Tools console when this happens. It will likely contain some additional details. You likely need to check the logs to find out why you are encountering this issue. Many times the "stuck in maintenance mode" issue is related to an unmountable storage repository. https://docs.xcp-ng.org/troubleshooting/log-files/
  • ForzaF

    Whatchdog support for Linux and Windows guests

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    olivierlambertO
    This post specifically: https://xcp-ng.org/forum/post/57441 The person had issues to speak in English but wanted to tell this configuration worked. You can use the xen_wdt backend to rely on a Xen operation to force restart the VM. I have no idea how it works on Windows.
  • A

    Virtualized XCP-ng reboots when trying to install Debian from an ISO from the local ISO store

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    A
    @lawrencesystems I think this is quite common when you need to test certain scenarios with multiple hypervisors (backup, migrations, etc.). You only need a couple of HVs with a few tiny running VMs. We have done this setup with nested esxi many times for testing purposes. And since e.g. Ubuntu and Windows work this way, the problem is probably specific to Debian (and maybe others?).
  • R

    PXE Boot a VM and use HTTP for kernel/initrd download

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    olivierlambertO
    Question for @gduperrey or @stormi
  • I

    USB pass-through device with wrong product and vendor identifiers on 8.2

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    I
    @infodavid Finally, I follow an existing topic and configure nut-server on the hypervisor to access the ups via usb. I know that Olivier is not fully aligned with the fact that the host is modified but IMO it is an acceptable change on my XCP-NG host.
  • S

    This topic is deleted!

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  • L

    VMs are abruptly getting shutdown

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    J
    @lritinfra Something to consider also the HPE Intelligent Provisioning is the main way, outside of HPE iLO, HPE SUM or HPE SPP to update the server's hardware firmware. If you aren't using individual RPMs or SCEXE files for the task. With HPE Intelligent Provisioning and HPE SPP being able to update, both firmware and BIOS. As not all of the updates for firmware will be in a compatible format, for use with HPE iLO. I'm not sure if it has changed but an Administrator Password set on the BIOS (at minimum), also locks out (disables) access to the Erase option on the HPE Intelligent Provisioning. At least it does on my only HPE Server running an up to date BIOS, HPE iLO and HPE Intelligent Provisioning. Thus disabled HPE Intelligent Provisioning doesn't help with being up to date enough to fix vulnerabilities and bugs at hardware or firmware level.
  • K

    Is it possible to prioritize the booting of certain VMs over another when xcp-ng starts?

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    R
    @rjt Note to self about creating and managing appliances at xe cli. xe help --all | egrep -i '(appliance)' # find xe appliance related commands. appliance-assert-can-be-recovered, appliance-create, appliance-destroy, appliance-list, appliance-param-clear, appliance-param-get, appliance-param-list, appliance-param-set, appliance-recover, appliance-shutdown, appliance-start,