sr iov

network configuration can be detailed to the combination of the site and the logical network, essentially deciding which physical servers are involved in connecting to the logical network and which logical networks are involved in connecting to the virtual switch. (3) Logical switch logical switch The Logical switch logical switch creates a virtual switch at the operating system level and is configured around that virtual switch, or it can be considered a configuration center for a virtual swi

TechnologyThe single Root I/O virtualization is a standard for sharing pci-e devices with virtual machines. Multi-use on network devices, in theory can also support other PCI devicesSR-Iov Technology is a hardware solution that provides a virtualization layer that bypasses the system from hardware, and allows no virtual functions to have separate memory addresses, interrupts, DMA streamsPFs physical functions has a full-featured PCI-EVFs virtual Func

kb. 4. remote Replication of virtual machines-Replication is a feature provided by vSphere 5.1 in many versions (originally part of vCenter Site Recovery Manager 5.0 ), A virtual machine that is running on one local ESXi host can be continuously copied to an ESXi host in another place. It will store the VM in a local cluster or on another platform, create a copy, and this data source will help you quickly restore the virtual machine. Compared with restoring a VM from backup data, restoring thro

occupied by one virtual machine alone; the second is SR-IOV-based PCI-Passthrough, RDMA physical devices support SR-IOV, VMM/Hypervisor for each virtual machine to assign a VF, this method allows multiple virtual machines to share an RDMA physical device. The performance of the virtual machine is basically equivalent

The last kilometer of virtualization--virtualized NICVirtualization is the foundation of cloud computing, where CPUs, memory, storage, and networks are virtualized into resource pools,One of the first steps of network virtualization is the virtualization of the NIC and the way in which multiple virtual network cards are connected by traditional networks (logically)Uplink to the access layer switch.On the other hand, we all know that the virtual network card is a software simulation run in memory

operating systems. This reduces the I/O latency and enables the processor to have more available cycles to process business applications. Intel VT-C can increase I/O throughput by more than doubled, so that the throughput of virtualized applications is close to that of the local machine. Each server will integrate more applications, while there will be fewer I/O bottlenecks. -- Dramatically improve virtualization performance with Virtual Machine Direct Connection (vmdc): With PCI-SIG single I/O

After using Linux 3.9 as the core of the KVM host, you may experience an IGB when you assign the VF (IGBVF) to use the Sr-iov of an Intel NIC (such as: 82576, I350). You can see the following error message in the guest's DMESG: The code is as follows Copy Code IGBVF 0000:00:03.0:IRQ for Msi/msi-xIGBVF 0000:00:03.0:invalid MAC address:00:00:00:00:00:00Igbvf:probe of 0000:00:03.0

Replica tion 12. Multi-Site topology 13. Support Storage vMotion 14. Multiple point-in-time (mtip) snapshots 1. Virtual SAN 6.0 2. Virtual Volumes (VVOL) 3. NFS 4.1 Client 4. NFS and ISCSI IPV6 support 5. Storage Policy-based management (SPBM) is now available for all VSphere versions using 6. SIOC IOPS reserved 7. VSphere Replication 8. Support 2000 virtual machines per vCenter Server Internet 1. More robust LACP support2. Maximu

Fedoara14 and RHEL6 [kvm] provide three types of configuration support for virtualization. networkAddressTranslation [NAT] 2. directly allocate the physical device [PCIpassthroughorSR-IOV] 3. the shared physical device [Bridge] is enabled by default. If you want to access a VM over the Internet, you can directly allocate physical devices or Bridge the network. NAT: almost all standard libvirt Support NAT Fedoara 14 and RHEL 6 [kvm] provide three types

Comb out the basic knowledge frame of the virtualization, enrich the framework gradually, and summarize the deep learning of the node.Simulator PrincipleUnderstanding the principles of the emulator helps to understand the underlying principles of virtualization, so you need to supplement the basics appropriately.--qemu,bochs--Interpreting execution--Binary Dynamic translation--Dyngen--TCG (Tiny Code Generator)Virtualization of--CPU Virtualization--Instruction simulation--Interpreting execution--

Works in a specific group according to the protocol. Note that smb1 does not define the complete data packet format for each CIFS protocol in the group package, but only defines the header (with WCT) field, sending is performed by controlling IOV and iov_count. For details, refer to the following code: Dependencies (Conn-> protocol, Conn-> smb1.capabilities, smb_command, additional_flags, clear_flags, flags, additional_flags2, clear_flags2, flags2