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  • All Xen related stuff

    559 Topics
    5k Posts
    E
    Re: nVidia Tesla P4 for vgpu and Plex encoding Thanks for various guides I was able to install the driver on xcp-ng 8.3 I've used NVIDIA-vGPU-CitrixHypervisor-8.2-570.124.03.x86_64.iso and vgpu-7.4.16-1.xs8.x86_64.rpm (from xen server) The driver seems to work and T4 is detected # nvidia-smi Thu Apr 3 17:18:25 2025 +-----------------------------------------------------------------------------------------+ | NVIDIA-SMI 570.124.03 Driver Version: 570.124.03 CUDA Version: N/A | |-----------------------------------------+------------------------+----------------------+ | GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |=========================================+========================+======================| | 0 Tesla T4 Off | 00000000:02:00.0 Off | 0 | | N/A 86C P0 42W / 70W | 13MiB / 15360MiB | 0% Default | | | | N/A | +-----------------------------------------+------------------------+----------------------+ +-----------------------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=========================================================================================| | No running processes found | +-----------------------------------------------------------------------------------------+ Unfortunately the card doesn't seem to be in vGPU mode: # nvidia-smi vgpu -q No supported devices in vGPU mode I'm not sure if "Addressing Mode: Unknown Error" is anything to be concerned about, cannot find anything specific about that. #nvidia-smi -q ==============NVSMI LOG============== Timestamp : Thu Apr 3 16:53:35 2025 Driver Version : 570.124.03 CUDA Version : Not Found Attached GPUs : 1 GPU 00000000:02:00.0 Product Name : Tesla T4 Product Brand : NVIDIA Product Architecture : Turing Display Mode : Enabled Display Active : Disabled Persistence Mode : Disabled Addressing Mode : Unknown Error ... GPU Virtualization Mode Virtualization Mode : None Host VGPU Mode : N/A vGPU Heterogeneous Mode : N/A ... I also see that vGPU / sr-iov (as least theoretically) supported: # lspci -v -s 02:00.0 02:00.0 3D controller: NVIDIA Corporation TU104GL [Tesla T4] (rev a1) Subsystem: NVIDIA Corporation Device 12a2 Physical Slot: 6 Flags: bus master, fast devsel, latency 0, IRQ 32 Memory at f8000000 (32-bit, non-prefetchable) [size=16M] Memory at 383fc0000000 (64-bit, prefetchable) [size=256M] Memory at 383ff0000000 (64-bit, prefetchable) [size=32M] Capabilities: [60] Power Management version 3 Capabilities: [68] #00 [0080] Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [c8] MSI-X: Enable- Count=6 Masked- Capabilities: [100] Virtual Channel Capabilities: [258] L1 PM Substates Capabilities: [128] Power Budgeting <?> Capabilities: [420] Advanced Error Reporting Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Capabilities: [900] #19 Capabilities: [bb0] #15 Capabilities: [bcc] Single Root I/O Virtualization (SR-IOV) Capabilities: [c14] Alternative Routing-ID Interpretation (ARI) Kernel driver in use: nvidia Kernel modules: nvidia I do have SR-IOV enabled in BIOS, but having it disabled didn't seem to change anything. Those with nvidia vGPUs, how have you ended up getting xcp-ng to enable the feature?

  • The integrated web UI to manage XCP-ng

    16 Topics
    253 Posts
    StwarfS
    @olivierlambert I did reboot the system. The fact that I can access everything fine with the using the external url but not when I try to use the local IP address of the machine is strange. I'm at work currently but I'm going to do a deeper dive when I get home and search through everything in my home network. I just don't know what else to check.

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

    88 Topics
    1k Posts
    D
    @Statitica have you checked the Event Logs, specifically the System event logs? I recall having a performance hit when I migrated some VMs from Hyper-V to XCP-ng (years ago at this point). I don't recall the exact issue off hand, but the remedy was easy enough.

  • Hardware related section

    109 Topics
    1k Posts
    S
    @DustinB Thanks for your reply! Yes, all of these Lenovo ThinkSystem ST250 V2 servers were delivered preassembled from the manufacturer with identical hardware configurations. The only customization done was the installation of XCP-ng 8.3, and the deployment of the same two VMs on each host. We didn't modify BIOS settings manually after delivery. The worrying thing here is that we do not have this problem on the same Lenovo ThinkSystem ST250 V2 hardware where we have installed Windows server. If you have any suggestions on how to verify or normalize power management behavior across identical units, that would be really helpful!

  • The place to discuss new additions into XCP-ng

    236 Topics
    3k Posts
    D
    @gduperrey Got it, thank you for your assistance, this is super helpful.
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  • N

    Optimization of Virtual Machines

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    4 Posts
    280 Views
    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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    No one has replied
  • 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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    60 Posts
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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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  • James92J

    Looking for Guidance on Enhancing Resource Allocation and XCP-ng Performance

    nextcloud linux
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    3 Posts
    729 Views
    R
    @James92 Storage Performance: Storage Performance in a single VM on a single disk is very slow on xen compared to hyper-v and vmware. this is because of the single-thread design of tapdisk. so nvme performance on xen will be cpu-core-ghz limited. there are only some workarounds like raid-0 in vm but no general satisfactorily solution. it does not seem that this will change soon.
  • B

    PVHv2 - how to configure VM

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    4 Posts
    356 Views
    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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    7 Posts
    443 Views
    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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    12 Posts
    603 Views
    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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    5 Posts
    315 Views
    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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    3 Posts
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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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    2 Posts
    207 Views
    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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    85 Posts
    25k Views
    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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    3 Posts
    205 Views
    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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    18 Posts
    659 Views
    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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    1 Posts
    136 Views
    No one has replied
  • A

    Guest tools in nested XCP-ng

    Solved
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    2 Posts
    154 Views
    olivierlambertO
    Hi, It's not possible.
  • F

    XCP/Vates support hours

    support xcp-ng xostor
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    2 Posts
    207 Views
    olivierlambertO
    Hi, No.