So I actually posted these findings to the ZFSBootMenu Discussion github: https://github.com/zbm-dev/zfsbootmenu/discussions/787 Looks like they have tested ZBM against KVM but not Xen. Can Xen not handle a kernel being kexec'd?

@Forza I keep hoping to see an Alpha or Beta of XCP-ng 9 soon, but I think there is still a lot of work to be done on the host side and on the Xen Orchestra 6 side.

@Bill.Oliver license-wise should be the same. now I think virtualisation gurus here could try to explain you what are the challenges with numa and dual sockets i have notions, but couldnt explain quite the optimisation in xen

@andriy.sultanov Hi, I am having the same issue. Many PCIe USB cards aren't showing up in XO. Any updates if/when this might be fixed? Being able to configure PCIe passthough from the web UI is a really useful new feature and it would be really cool to be able to fully make use if it. Below as requested my list of items that don't show up: 00:00.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Root Complex [1480]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 00:00.2 "IOMMU [0806]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse IOMMU [1481]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 00:01.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:01.1 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse GPP Bridge [1483]" "" "" 00:01.2 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse GPP Bridge [1483]" "" "" 00:02.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:03.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:03.1 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse GPP Bridge [1483]" "" "" 00:03.2 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse GPP Bridge [1483]" "" "" 00:04.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:05.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:07.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:07.1 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] [1484]" "" "" 00:08.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Host Bridge [1482]" "" "" 00:08.1 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] [1484]" "" "" 00:14.0 "SMBus [0c05]" "Advanced Micro Devices, Inc. [AMD] [1022]" "FCH SMBus Controller [790b]" -r61 "ASUSTeK Computer Inc. [1043]" "Device [87c0]" 00:14.3 "ISA bridge [0601]" "Advanced Micro Devices, Inc. [AMD] [1022]" "FCH LPC Bridge [790e]" -r51 "ASUSTeK Computer Inc. [1043]" "Device [87c0]" 00:18.0 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 0 [1440]" "" "" 00:18.1 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 1 [1441]" "" "" 00:18.2 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 2 [1442]" "" "" 00:18.3 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 3 [1443]" "" "" 00:18.4 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 4 [1444]" "" "" 00:18.5 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 5 [1445]" "" "" 00:18.6 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 6 [1446]" "" "" 00:18.7 "Host bridge [0600]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse/Vermeer Data Fabric: Device 18h; Function 7 [1447]" "" "" 02:00.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse Switch Upstream [57ad]" "" "" 03:01.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:02.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:03.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:04.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:05.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:06.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a3]" "" "" 03:08.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a4]" "" "" 03:09.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a4]" "" "" 03:0a.0 "PCI bridge [0604]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse PCIe GPP Bridge [57a4]" "" "" 05:00.0 "USB controller [0c03]" "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" -r03 -p30 "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" 06:00.0 "USB controller [0c03]" "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" -r03 -p30 "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" 07:00.0 "USB controller [0c03]" "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" -r03 -p30 "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" 09:00.0 "USB controller [0c03]" "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" -r03 -p30 "Renesas Technology Corp. [1912]" "uPD720201 USB 3.0 Host Controller [0014]" 0a:00.0 "Non-Essential Instrumentation [1300]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Reserved SPP [1485]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 0a:00.1 "USB controller [0c03]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse USB 3.0 Host Controller [149c]" -p30 "ASUSTeK Computer Inc. [1043]" "Device [8808]" 0a:00.3 "USB controller [0c03]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse USB 3.0 Host Controller [149c]" -p30 "Advanced Micro Devices, Inc. [AMD] [1022]" "Device [148c]" 10:00.0 "Non-Essential Instrumentation [1300]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse PCIe Dummy Function [148a]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 11:00.0 "Non-Essential Instrumentation [1300]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Reserved SPP [1485]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 11:00.1 "Encryption controller [1080]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse Cryptographic Coprocessor PSPCPP [1486]" "ASUSTeK Computer Inc. [1043]" "Device [8808]" 11:00.3 "USB controller [0c03]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Matisse USB 3.0 Host Controller [149c]" -p30 "ASUSTeK Computer Inc. [1043]" "Device [87c0]" 11:00.4 "Audio device [0403]" "Advanced Micro Devices, Inc. [AMD] [1022]" "Starship/Matisse HD Audio Controller [1487]" "ASUSTeK Computer Inc. [1043]" "Device [8733]" Most important ones being the PCIe USB cards: 05:00.0, 06:00.0, 07:00.0, 09:00.0. Thanks for looking into fixing this.

@acebmxer thank you for testing and confirming! For those who try this... NOTE WSL 1 has the issue of throwing the error Failed to take /etc/passswd lock: Invalid argument https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2069555/comments/12 Here is a fix sudo sed -i -e '/systemd-sysusers/s/.conf$/.conf || true/' /var/lib/dpkg/info/*.postinst sudo apt --fix-broken install

@AlexanderK You're welcome, i'm happy my tests are useful !

Hi, Let me ask @Team-Hypervisor-Kernel

@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/

Hey, sorry guys. Didn't have time to advance on that. I promise will put something to test during november.

Related: https://xcp-ng.org/forum/topic/9160/xen-orchestra-prometheus-backup-metrics/10

@dinhngtu No, I haven't tried those. The host reboot appeared to fix the original issue and I had forgotten about them when I was troubleshooting the restart yesterday. I'll do a bit more playing around with this in a few days and report back.

New version release ! A new patch version of the OME appliance is now available [image: 1761814461561-606721a0-e549-47b3-8b69-55d7b233d21f-image-resized.png] What I changed: Add xen-blkfront and xen-netfront driver Add guest tool (so RAM/network is reported, soft shutdown is working) /dev/sd* is replaced by /dev/xvd* Remove grub password Change admin and root password SSH is now enabled SElinux is working correctly DHCP is enabled by default As usual, please send a DM if you want the link to the vhd Feedback is welcome !

Happy to get your logs to get on the bottom of this. Sadly, we don't have a CM7 around so we cannot reproduce. Thank you very much for the feedback!

@Forza Yes it can This is how I do it https://xcp-ng.org/forum/topic/10834/apcupsd-install/9

Hi, I don't know if my question can be part of this thread. I apologize in advance... I bought a new system based on "AMD Ryzen 9 9950X" installed on "ASUS PRIME B850-PLUS-CSM". My target is to install two VM: linux based Ubuntu; Windows 11 In a possible future, I would like to install a graphic card for windows 11 CAD applications... I would like to ask if xcp-ng can run this environment... Thank you Claudio

@olivierlambert Beyond 'Did you try rebooting it?', I think 'Have you updated to the latest version?' is the second hard and fast rule all IT people should follow. I suspected the problem was that I was a few releases behind, so I ran an update. It brought the software to 5.109, though I didn't check the blog release page to confirm if I was in fact on the latest. I can finally sleep well tonight!

I believe this was a bug that was fixed in later versions: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX678047

I get ~510MiB on DL380 G10, 2.6ghz, 40gbe cx3, 8.3.