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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
    S
    @olivierlambert Nope, I meant host itself still thinks 32GB is usable [18:35 xcp-ng-home ~]# xl info host : xcp-ng-home release : 4.19.0+1 version : #1 SMP Thu Jan 13 12:55:45 CET 2022 machine : x86_64 nr_cpus : 16 max_cpu_id : 31 nr_nodes : 1 cores_per_socket : 8 threads_per_core : 2 cpu_mhz : 3700.265 hw_caps : 178bf3ff:76d8320b:2e500800:244033ff:0000000f:209c01a9:0 0000000:00000500 virt_caps : pv hvm hvm_directio pv_directio hap shadow total_memory : 32687 free_memory : 2472 sharing_freed_memory : 0 sharing_used_memory : 0 outstanding_claims : 0 free_cpus : 0 xen_major : 4 xen_minor : 13 xen_extra : .4-9.19.1 xen_version : 4.13.4-9.19.1 xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x 86_64 xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : 6e2fc128eb1a, pq dd3d13f0a45e xen_commandline : dom0_mem=2656M,max:2656M watchdog ucode=scan dom0_max_v cpus=1-8 crashkernel=256M,below=4G console=vga vga=mode-0x0311 cc_compiler : gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28) cc_compile_by : mockbuild cc_compile_domain : [unknown] cc_compile_date : Wed Feb 9 12:07:47 CET 2022 build_id : b709b0bb6a0cad9906689853f5bc629ba4b3e23f xend_config_format : 4 And from Xen Centre [image: 1762223831113-069bb376-3aeb-4383-a273-bd76478203d4-image.png]

  • 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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  • 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

    Solved
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    olivierlambertO
    Hi, It's not possible.
  • F

    XCP/Vates support hours

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

    Hosts fencing after latest 8.2.1 update

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    546 Views
    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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    4 Posts
    705 Views
    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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    4 Posts
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    olivierlambertO
    Question for @gduperrey or @stormi
  • I

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

    Unsolved
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    407 Views
    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,
  • A

    XCP-ng on a laptop - turning off the monitor

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    D
    @abudef I ran into the same thing on a dell latitude 5411, but I eventually found a workaround. In the BIOS under System Configuration there was an option called Unobtrusive Mode, and when enabled, a specific key combination will turn off the display and speakers, independent of the OS. The same key combination will then turn them back on when needed. While an automatic feature would be preferable, the manual option meets my needs since it would be rare to need to use the laptop screen. The one downside for me is that if power is lost long enough that the battery drains, the screen will need manual intervention after power is restored - the BIOS will turn the machine back on when it receives power, but won't put the screen back in its previous state. I put a sticker on the laptop with the key combination so I will remember it when needed.