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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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  • 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?
  • S

    Ubuntu 24.04 VMs not reporting IP addresses to XCP-NG 8.2.1

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    J
    I just tried to install Ubuntu 24.04 to test it out, and I experienced the same problem with it not recognizing the IP address. I was first using the Ubuntu-provided package (xe-guest-utilities=7.20.2-0ubuntu1), which was failing. I then tried the package I had been using with my Ubuntu 22.04 servers that used to be part of the XCP-ng guest-tools.iso (xe-guest-utilities_7.20.0-9_amd64.deb) and had the same results. I mounted my current guest-tools.iso, which now has xe-guest-utilities_7.30.0-11_amd64.deb, and installed it. Now it was retrieving the IP address correctly. I'm not sure why the OP was still having trouble with that version (I'm using UEFI instead of BIOS, but I wouldn't think that would matter). I went ahead and tried out the Rust-based tools mentioned (xen-guest-agent_0.4.0_amd64.deb), and it was properly getting the IP address as well. I'm guessing there's some incompatibility (probably with the 6.x kernel) that was fixed between 7.20 and 7.30 (intentionally or accidentally). Given how much the Linux tools have changed over the years and the fact that they're not used for PV drivers anymore, is there a particular reason to use one over the other (legacy vs Rust)? What features do they really provide now? Is it just CPU/memory/disk/network status?
  • 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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    M
    @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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    S
    @tjkreidl Yeah, thanks. 12 hours, 68 VDIs to coalesce down to 10. Quite the improvement.