in ubuntu18.04 enable ixgbe VF feature

最新推荐文章于 2023-05-17 09:59:53 发布

原创最新推荐文章于 2023-05-17 09:59:53 发布 · 545 阅读

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本文介绍如何在Intel平台上配置IOMMU(Intel输入/输出内存管理单元)和SR-IOV(单根I/O虚拟化)，包括修改GRUB启动参数以启用IOMMU，强制分配PCI中断，以及设置ixgbe网卡的最大虚拟功能数量。通过这些步骤，可以优化虚拟化环境下的I/O性能。

lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 58
Model name: Intel(R) Core(TM) i5-3550 CPU @ 3.30GHz
Stepping: 9
CPU MHz: 2098.032
CPU max MHz: 3700.0000
CPU min MHz: 1600.0000
BogoMIPS: 6584.87
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 6144K
NUMA node0 CPU(s): 0-3
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm cpuid_fault epb pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts flush_l1d

1. enable vt-d in BIOS
2. enable iommu
cat /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="crashkernel=384M-:128M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M intel_iommu=on"
Add intel_iommu=on into GRUB_CMDLINE_LINUX_DEFAULT
run update-grub
3. error: SR-IOV: bus number out of range
This is because the old motherboard does not support auto assign PCI irq.
Use pci=assign-busses to force to assign
cat /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="crashkernel=384M-:128M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-2G:128M,2G-:256M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M intel_iommu=on pci=assign-busses"
Add pci=assign-busses into GRUB_CMDLINE_LINUX_DEFAULT
4. cat /etc/modprobe.d/ixgbe.conf
options ixgbe max_vfs=4
5. reboot the host
lspci | grep -i "Ethernet controller: Intel"
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) (rev 04)
01:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
02:10.0 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.1 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.2 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.3 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.4 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.5 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.6 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:10.7 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.0 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.1 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.2 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.3 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.4 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.5 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.6 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)
02:11.7 Ethernet controller: Intel Corporation 82599 Ethernet Controller Virtual Function (rev 01)