Questions tagged [sr-iov]

Single Root I/O Virtualization

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Missing Azure accelerated networking interfaces while VMs initializes

I'm running my application on top of Azure Ubuntu 16.04 VMs (Wrapped as a VHD image). In several cases I have observed missing SRIOV associated VFs interfaces, while VMs were starting. Need to mention ...
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7 views

SR-IOV buffer allocation

I'm reading about SR-IOV but one thing is still not clear. Does it divide the TX/RX buffers evenly between VIFs, or those are shared resources? I'm worried that, if the first case is valid, I'll end ...
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40 views

Using SR-IOV with virtio passthrough mode on KVM for CSR1000v

I have been struggling for a few days on this and thought its best to look out for someone who has already done this. I am trying to bring up a CSR1000v on KVM in Centos 7 using virt-manager GUI tool ...
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324 views

Changing MAC address of SR-IOV from VM in [spoofchk off,trusted on]

I have RHEL 7.4 + KVM with Intel i40e drivers with SRIOV enabled NIC[Intel X710] as host and Centos 7.5 as guest with i40evf driver. When i try to change MAC address of VF from the VM i get Operation ...
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0answers
223 views

openstack shared PCI between numa with SR-IOV

I'm building SR-IOV supported compute node on HP 360g8 hardware and i have Qlogic interface card, my compute node has 32 core & 32GB memory. Problem: when i launch vm-1 (with flavor 16 vCPU core)...
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154 views

UDP bad checksum errors

UDP checksum can not be computed by Hardware virtualization (Intel 82599 SRIOV PCI pass-through, DPDK). UDP bad checksum errors are observed in the TCP dump(pcap) collected after host on the Service ...
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2answers
901 views

Error in enbling SR-IOV with Ubuntu 18.04 on Intel ixgbe - Intel X550 - Dell R640

I'm having issues on creating VF with ubuntu 18.04. SR-IOV is enabled from BIOS, the NIC are Intel X550, I added intel_iommu=on to /etc/default/grub and also tried using modprobe.d by adding options ...
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1answer
108 views

KVM - is VEPA “software implementation” of SR-IOV?

I'm reading about options to improve CPU usage and in general networking performance between VMs. I knew about bridged networking and pci-e passthrough, as well as SR-IOV however now I found out about ...
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0answers
305 views

how to name SR-IOV Virtual Functions

When an SR-IOV Virtual Function (VF) is created, the Linux kernel names it ethX, with X being the lowest available index among Ethernet interfaces. Is there a way to control such naming? For ...
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1answer
280 views

No traffic to the VM

TL;DR (1) Only the first 2 VFs are transferred to the VM and (2) No traffic to the VM. Setup Host is Ubuntu 16.04 Intel 82599 (supports SR-IOV) attached via PCIe Driver ixgbe Guest VM is Ubuntu ...
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1answer
236 views

Only one link comes up on dual PCIe 10-Gigabit card

Background A server running Ubuntu 16.04 Dell X520 (based on Intel's 82599) is connected via PCIe ixgbe driver was installed from here and comes up at boot Issue The card is recognized by the ...
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1answer
77 views

How to config mass network interfaces with same option?

I have a SR-IOV enabled debian which exposed 128 VF network interfaces. I would like to configure all of these VF with MTU=9000 and some other options, but won't like to copy same config line 127 ...
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1answer
667 views

Getting Intel SR-IOV Virtual Function counters

After some research on Intel SR-IOV, I've realized that there is no convenient way to get the VF counters while VF interface is being attached to a VM (for example to a QEMU/KVM VM with a Libvirt ...
2
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1answer
4k views

Is vlan tagging on guest allowed in sr-iov on KVM?

I am using KVM on Centos 7. I have created a VM with SR-IOV VFs to pass traffic. I notice that I am unable to pass traffic when I tag the interface inside the VM. I have read through the internet and ...
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0answers
239 views

udev attribute cannot be set on boot

I'm setting up SR-IOV for my Intel I350 igb on CentOS 6.6 (2.6.32-504.el6.x86_64, udev 147) using udev. I have modified a rule I used in CentOS 7 (3.10.0-123.el7.x86_64, udev 208). When I do "udevadm ...
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2answers
741 views

How to get SRIOV network pool with multiple PFs

For an Ubuntu 12.04 server and KVM/libvirt 1.0.0 with an Intel 82599 network chip: following these docs: http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs_in_a_libvirt_....
3
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2answers
3k views

can switch handle multiple LACP teams on the same ports

If I use SRIOV capable adapter for virtualization, and setup 2 different LACP links in 2 guests, so there may be 2 LACP links on the same ports on switch side, can switch handle this case? For ...
8
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1answer
3k views

How to get virtualized SR-IOV Infiniband interface UP?

I've spent several days on this now and I've managed to get SR-IOV working with the Mellanox Infiniband card using the latest firmware. The Virtual Functions appear in Dom0 as 06:00.1 Network ...
4
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1answer
3k views

How do I enable SR-IOV for Mellanox ConnectX-3 Ubuntu 12.04.3?

I have a Supermicro 2027TR-HTFRF server that I'm using as a xen server. What I'm wanting to do is get SR-IOV operating for the Connectx-3 card so that I can expose Infiniband to virtual machines. ...