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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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  • J

    SMB share write performance issue windows server 2019

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    D
    Hello, I've tried benchmarking several Windows VMs from another client and am getting expected performance: Read: .\diskspd.exe -c1G -d10 -Su -Sw g:\data.dat Write: .\diskspd.exe -c1G -d10 -Su -Sw -w100 g:\data.dat Windows Server 2022: Read IO thread | bytes | I/Os | MiB/s | I/O per s | file ------------------------------------------------------------------------------ 0 | 1151533056 | 17571 | 109.72 | 1755.53 | g:\data.dat (1GiB) ------------------------------------------------------------------------------ total: 1151533056 | 17571 | 109.72 | 1755.53 Write IO thread | bytes | I/Os | MiB/s | I/O per s | file ------------------------------------------------------------------------------ 0 | 966000640 | 14740 | 92.12 | 1473.98 | g:\data.dat (1GiB) ------------------------------------------------------------------------------ total: 966000640 | 14740 | 92.12 | 1473.98 Windows 11 24H2 (with Eset): Read IO thread | bytes | I/Os | MiB/s | I/O per s | file ------------------------------------------------------------------------------ 0 | 1100283904 | 16789 | 104.81 | 1677.01 | g:\data.dat (1GiB) ------------------------------------------------------------------------------ total: 1100283904 | 16789 | 104.81 | 1677.01 Write IO thread | bytes | I/Os | MiB/s | I/O per s | file ------------------------------------------------------------------------------ 0 | 931594240 | 14215 | 88.82 | 1421.07 | g:\data.dat (1GiB) ------------------------------------------------------------------------------ total: 931594240 | 14215 | 88.82 | 1421.07 Several questions: Are you running benchmarks on a separate virtual disk? If not, could you try again using a share created from a separate virtual disk? Could you run CrystalDiskMark locally on these VMs and see the performance? You mentioned that Eset security takes up 100% CPU during the benchmark. Could you try temporarily uninstalling Eset and testing again?
  • J

    USB Passthrough speed issue

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    16 Posts
    5k Views
    olivierlambertO
    Thanks for your feedback. In the meantime, I will plan a "spike" to investigate the status of USB speed on passthrough.
  • A

    8.3 USB Passthrough - Win Server 2019 BSOD

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    M
    @andsmith windbg is also a regular win32 app and is included in any recent windows SDK. Here: https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/ You just need windbg so deselect all the other crap.
  • H

    VDI export of running VM

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    olivierlambertO
    Yes, you can use XO webhooks (IIRC) to trigger something before or after a backup and send the request to a custom agent you made inside the VM. But I'm not sure to get it, can you provide what do you want to achieve, not the technical solution (script VM backup is already a solution, not the problem you are trying to solve)
  • K

    Is Cold Migration of VMs from XCP-ng 8.3 back to 8.2.1 Not Supported?

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    stormiS
    @andrewperry The release notes warn about PV guests.
  • L

    8.3 cannot contact other host using TLS

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    1 Posts
    406 Views
    No one has replied
  • P

    XO-lite issue - 8.3 / IPv6

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    BenjiReisB
    @PimAarts hi! Thx for the report - I reproduced the issue and am investigating. Meanwhile clicking on Cancel will give you access to XOLite
  • M

    Failed upgrade to 8.3 now stuck on grub

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    7 Posts
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    olivierlambertO
    2 times the charm I have no idea why it failed initially, but at least you tested the magic rollback As you can see, it's really a GREAT feature
  • T

    Host not running VMs after update

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    16 Posts
    3k Views
    T
    We are now live again with all the VMs - which is a relief. The above steps from @stormi were great, the one thing I notced was the /etc/stunnel/certs directory didn't exist. I created that manually and everything else seemed happy. I did have to mess about a bit with the fibre NICs, but I've repeated the previous renaming and that's now running fine. Thanks very much for all the help - I appreciate it.
  • A

    "Hardware-assisted virtualization is not enabled on this host" even though platform:exp-nested-hvm=true is set

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    58 Posts
    28k Views
    olivierlambertO
    There is some diff, but not that much between HyperV, ESXi and Xen. However, it's big enough to require a lot of effort to get nested working correctly, one small mistake and your VM is dead.
  • E

    Change Default Grub Option In 8.3 To Serial Console

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    E
    @elvintmp75 I should have searched forum better lol. Because it’s UEFI the file is in a different location https://xcp-ng.org/forum/post/11939
  • P

    Live Migrate fails with `Failed_to_suspend` error

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    R
    @randyrue Confirmed that after cold booting a VM to a new host I can then migrate it live to another new host.
  • T

    XCP-ng 8.2.1 Guest UEFI Secure Boot

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    12 Posts
    3k Views
    MathieuRAM
    I see that the bug is actually already fixed on the latest version (5.98.1).
  • apzA

    Guest running kernel 6.8 hangs after a while

    Solved
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    17 Posts
    5k Views
    T
    I believe Proxmox Backup Server kernel Linux pbs 6.8.4-2-pve has also the same issue. updating to Linux pbs 6.8.12-1-pve solves.
  • M

    Protectli now available preinstalled with XCP-NG

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    6 Posts
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    olivierlambertO
    @darkbounce Short answer: it seems that Intel hybrid architecture is finding a way to make something that would result of Xen running the VM with the less "featured" CPU, meaning your VM will never use all P core instructions that aren't on E core, meaning... it will work without disabling one or another. Hard to tell how much is lost in terms of perfs vs the best Intel hybrid scheduler (which is on... Windows) but probably not that much on a machine with a reduced number of P cores like this one.
  • Y

    Mirror moved Permanently

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    8 Posts
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    olivierlambertO
    @yammy I hope you are not talking of installing Docker in the Dom0, because this is really a bad idea.
  • P

    xo vm-export / vm-import issue with latest XCP-Ng 8.3

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    10 Posts
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    P
    @Pix [image: 1724423840376-capture-d-e-cran-2024-08-23-a-16.36.56.png] Looks like the different HW or Pool is an issue, i'll make more tests and report here if it's ok
  • P

    Disable DHCP option 60 when PXE booting

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    10 Posts
    2k Views
    P
    @PontusB i don't even know if disabling option 66 solves the issue but as soon as we add option 66 in our DHCP server it boots fine from XenServer (but without HA between the many PVS servers).
  • RealTehrealR

    Issue after latest host update

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    57 Posts
    27k Views
    M
    @stormi Thanks, looking forward.
  • T

    Vates please work acquiring vmware in the future

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    3 Posts
    609 Views
    T
    @olivierlambert There you go hehe