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  • All Xen related stuff

    592 Topics
    6k Posts
    TeddyAstieT
    @Maelstrom96 said in Epyc VM to VM networking slow: What is the exact kernel patch that is required for the xen-platform-pci-bar-uc=false fix to work on a Linux guest? We're looking at potentially compiling our own kernel with the xen-netfront.c patch, and we would like to see about adding the other part of the Kernel code needed for the Grant table fix. Patch is in Linux since 5.19-rc. You also find it in some stable branches like 5.15. Otherwise, you can check this patch https://lore.kernel.org/xen-devel/ea4945df138527ed63e711cb77e3b333f7b3a4c9.1751633056.git.teddy.astie@vates.tech/

  • The integrated web UI to manage XCP-ng

    25 Topics
    343 Posts
    P
    @mx234 I'm running netbird with an exit node and I get access to my LAN. Everything works great

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

    107 Topics
    1k Posts
    D
    @linuxmoose The guest Secure Boot situation needs some fixing from our end (see https://xcp-ng.org/blog/2025/10/30/xcp-ng-8-3-varstored-update-unbootable-vm-risk-and-remediation/ for context). I can produce for you a test update which resolves all known problems and makes guest Secure Boot work again if you wish.

  • Hardware related section

    140 Topics
    1k Posts
    P
    @sir_alex_leo I don't know but are they of the same type ?? Total Width: 128 bits Data Width: 64 bits Total Width: 64 bits Data Width: 64 bits

  • The place to discuss new additions into XCP-ng

    244 Topics
    3k Posts
    olivierlambertO
    There's some nice progress on @psafont's work regarding improved revert. I'm confident we'll get there
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  • J

    PXE Boot from new VM not working

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    bleaderB
    @JBlessing as it looks like it does start, it looks like the networking side is working, at least at first. Just for debugging purpose you could try to switch that VM to BIOS instead of UEFI if it is possible, maybe it is related to what the pxe is starting in the VM. You could also try switching the VM between realtek and e1000 NIC, at this stage, PV drivers are not there so it is using an emulated NIC, maybe the image your PXE starts doesn't like the one you're using and it gets stuck somehow. As you're already using it with vmware, I assume you know how to size your VM, but if you went for a tight RAM value for this VM, you could try to give it more RAM to see if that could be related, as everything has to fit in RAM at some point, we may be using more at startup than vmware… Hope one of this can help
  • R

    Can't get slave out of maintenance mode after yum updates

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    276 Views
    olivierlambertO
    About the xsconsole: sometimes it's not refreshing. You can try to get access to the console, then type "xsconsole" it will start it and you should see it works You must have the master up to date if you want your slave to connect again. I never tried to elect a new master in the middle of the upgrade, I would discourage it. Better shutdown some VMs on the master, upgrade it and you are automatically back on track.
  • R

    VM failed and won't start. Displaying "An emulator required to run this VM failed to start"

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    35 Posts
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    olivierlambertO
    Then try to find anything happening around that time on other hosts, equipment, storage and so on.
  • msupportM

    XCP-NG Kubernetes micro8k

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    nathanael-hN
    Hello @msupport we published a step by step guide, read more in the announcement there https://xcp-ng.org/forum/post/94268
  • B

    NFS multipathing configuration

    xcp-ng nfs xenorchestra
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    9 Posts
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    B
    Great, thank you!
  • F

    XCP-NG 8.2.1 slave node of cluster unresponsive. after hardware reboot (with software reboot the system hang for 20min) the node is unable to contact the master node...

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    F
    @Danp yes I ran "yum update" to be sure but "nothing to upgrade" on the pool-master. I try with storage (iscsi) NIC configured and without Storage NIC configured but the pool join freeze. Seems that persist some "SESSION" (may be referred to the slave host previously configured?) or some incoerence in the pool database... from /var/log/xensource of the slave host when try to join the pool: "session_check D:520c5b4e5b36 failed with exception Server_error(SESSION_INVALID, "
  • MK.ultraM

    Automating VM configurations after mass VMware imports

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    olivierlambertO
    Thanks, this is helpful We'll discuss that with the @Team-DevOps and try to get things implemented!
  • MK.ultraM

    Commvault backups failing for a VM with large disks

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    417 Views
    olivierlambertO
    To me it sounds like a Commvault issue. If you want some investigation on Vates side, I would recommend to open a support ticket
  • C

    How to Re-attach an SR

    Solved
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    20 Posts
    2k Views
    tjkreidlT
    @olivierlambert Agreed. The Citrix forum used to be very active, but especially since Citrix was taken over, https://community.citrix.com has had way less activity, sadly. It's still gratifying that a lot of the functionality still is common to both platforms, although as XCP-ng evolves, there will be continually less commonality.
  • E

    Rolling Pool Update - not possible to resume a failed RPU

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    13 Posts
    1k Views
    Tristis OrisT
    @olivierlambert During RPU - yes. i mean manual update in case of failure.
  • gudge25G

    Alpine Template Problem

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    7 Posts
    505 Views
    ?
    For anything older than the branches still shown in https://pkgs.alpinelinux.org, (from v3.0 to v3.12), the packages should be downloaded from their cdn: https://dl-cdn.alpinelinux.org/alpine But as mentioned above, anything older than 3 releases from the lastest current one(v3.21) are end of life and should not be used for more than testing.
  • escape222E

    8.3 Cannot boot from CD Rom

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    2k Views
    olivierlambertO
    Reping @stormi
  • L

    sr iso disconnect and crashed my hosts

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    11 Posts
    955 Views
    olivierlambertO
    I already suggested you the solution, now it's up to you to live with those process or to decide to reboot (ideally after doing updates because it's very dangerous to NOT being up to date)
  • I

    Install XCP-ng in old HP ProLiant DL160 G6 (gen 6)

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    9 Posts
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    S
    @john.c Yeah - like I said it is a good step in the right direction. Just doesn't solve my particular storage related problems.
  • V

    Citrix tools after version 9.0 removed quiesced snapshot

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    TeddyAstieT
    @vkeven XCP-ng 8.1 release note says VSS and quiesced snapshots support is removed, because it never worked correctly and caused more harm than good. Note that Windows guest tools version 9 (the default for recent versions of Windows if you install Citrix drivers) already removed VSS support, even for older versions of CH / XCP-ng I am not sure if this VSS feature is bound to the PV drivers, or if it also needs hypervisor support. Though it is not recommended to stay on a old version of the guest agent.
  • T

    Diagnosing frequent crashes on host

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    T
    @olivierlambert @olivierlambert said in Diagnosing frequent crashes on host: Maybe there's a usage that's slightly different since when it was "more solid" and now it's trigger more easily. Is your XCP-ng fully up to date? No; as said originally, I'm still on 8.2.1. I have been concerned about moving to 8.3 because it's a new installation, and I don't want to screw it up, but I'm willing to accept that it's the right thing to do.
  • S

    Script to auto mount USBs on Boot/Reboot. Monitoring Multiple UPS

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    7 Posts
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    olivierlambertO
    Ping @stormi so we track this somewhere internally
  • G

    Grub looking for /dev/vda instead of /dev/xvda

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    1 Posts
    182 Views
    No one has replied
  • Y

    Storage migration logs

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    2 Posts
    202 Views
    olivierlambertO
    Hi, Check the task view, you'll have the duration of the process visible.
  • M

    reboot of host does it stop or kill running VM's?

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    2k Views
    N
    Could someone elaborate on the procedure to have all VMs on a host shutdown properly upon XCP-NG host shutdown please? I tried from the host prompt: xe host-disable xe host-shutdown and from XOA Host: shutdown, with warning (This will shutdown your host without evacuating its VMs. Do you want to continue?) and rightly so the host has seemingly become unavailable (ping to its IP stops) But then what happens is very odd: first the VM on it still pings for a couple minutes (yes after the host stops to answers the ping) then the VM stops pinging but AFAICS XCP-NG is not OFF Awkwardly, I just access to the IDRAC8 entreprise license on which XCP-Ng is running, and can't SEE the proper status of XCP-NG from it. AFAIK it's not pinging but it doesn't seem OFF either. At least the IDRAC shows it ON, and upon power cycling and reconnecting to the VM the logs shows it hasn't been cleanly shutdown. NB: the VM has xen-guest-agent running within a container, but from what I gathered, the agent in Linux guests has no role in VM shutdown: See https://xcp-ng.org/forum/topic/10631/understanding-xe-guest-utilities/16 Also, I doubled check Proxmox: it does clean shutdown VMs, either with a "shutdown -h now" command or when triggered from GUI. And that's with a VM that has Promox guest installed. In any case, it would be nice to have XCP-NG/XOA be able to do the same.