X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=docs%2Freport%2Fintroduction%2Fmethodology_kvm_vms_vhost_user.rst;fp=docs%2Freport%2Fintroduction%2Fmethodology_kvm_vms_vhost_user.rst;h=0000000000000000000000000000000000000000;hp=216d461911cd5e3b21a04fbd1023097bc76a460a;hb=374954b9d648f503f6783325a1266457953a998d;hpb=46eac7bb697e8261dba5b439a15f5a6125f31760

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-KVM VMs vhost-user
-------------------
-
-QEMU is used for KVM VM vhost-user testing enviroment. By default,
-standard QEMU version is used, preinstalled from OS repositories
-(qemu-2.11.1 for Ubuntu 18.04). The path
-to the QEMU binary can be adjusted in `Constants.py`.
-
-FD.io CSIT performance lab is testing VPP vhost-user with KVM VMs using
-following environment settings:
-
-CSIT supports two types of VMs:
-
-- **Image-VM**: used for all functional, VPP_device, and regular
-  performance tests except NFV density tests.
-
-- **Kernel-VM**: new VM type introduced for NFV density tests to provide
-  greater in-VM application install flexibility and to further reduce
-  test execution time by simpler VM lifecycle management.
-
-Image-VM
-~~~~~~~~
-
-CSIT can use a pre-created VM image. The path to the image can be
-adjusted in `Constants.py`. For convenience and full compatibility CSIT
-repository contains a set of scripts to prepare `Built-root
-<https://buildroot.org/>`_ based embedded Linux image with all the
-dependencies needed to run DPDK Testpmd, DPDK L3Fwd, Linux bridge or
-Linux IPv4 forwarding.
-
-Built-root was chosen for a VM image to make it lightweight and with
-fast booting time to limit impact on tests duration.
-
-In order to execute CSIT tests, VM image must have following software
-installed: qemu-guest-agent, sshd, bridge-utils, VirtIO support and DPDK
-Testpmd/L3fwd applications. Username/password for the VM must be
-``cisco``/``cisco`` and ``NOPASSWD`` sudo access. The interface naming
-is based on the driver (management interface type is Intel E1000), all
-E1000 interfaces will be named ``mgmt<n>`` and all VirtIO interfaces
-will be named ``virtio<n>``. In VM ``/etc/init.d/qemu-guest-agent`` must
-be set to ``TRANSPORT=isa-serial:/dev/ttyS1`` because ttyS0 is used by
-serial console and ttyS1 is dedicated for qemu-guest-agent in QEMU
-setup.
-
-Kernel-VM
-~~~~~~~~~
-
-CSIT can use a kernel KVM image as a boot kernel, as an alternative to
-image VM. This option allows better configurability of what application
-is running in VM userspace. Using root9p filesystem allows mapping the
-host-OS filesystem as read only guest-OS filesystem.
-
-Example of custom init script for the kernel-VM:
-
-::
-
-  #!/bin/bash
-  mount -t sysfs -o "nodev,noexec,nosuid" sysfs /sys
-  mount -t proc -o "nodev,noexec,nosuid" proc /proc
-  mkdir /dev/pts
-  mkdir /dev/hugepages
-  mount -t devpts -o "rw,noexec,nosuid,gid=5,mode=0620" devpts /dev/pts || true
-  mount -t tmpfs -o "rw,noexec,nosuid,size=10%,mode=0755" tmpfs /run
-  mount -t tmpfs -o "rw,noexec,nosuid,size=10%,mode=0755" tmpfs /tmp
-  mount -t hugetlbfs -o "rw,relatime,pagesize=2M" hugetlbfs /dev/hugepages
-  echo 0000:00:06.0 > /sys/bus/pci/devices/0000:00:06.0/driver/unbind
-  echo 0000:00:07.0 > /sys/bus/pci/devices/0000:00:07.0/driver/unbind
-  echo vfio-pci > /sys/bus/pci/devices/0000:00:06.0/driver_override
-  echo vfio-pci > /sys/bus/pci/devices/0000:00:07.0/driver_override
-  echo 0000:00:06.0 > /sys/bus/pci/drivers/vfio-pci/bind
-  echo 0000:00:07.0 > /sys/bus/pci/drivers/vfio-pci/bind
-  $vnf_bin
-  poweroff -f
-
-QemuUtils library during runtime replaces the ``$vnf_bin`` variable by
-the path to NF binary and its parameters. This allows CSIT to run any
-application installed on host OS, for example the same version of VPP
-as running on the host-OS.
-
-Kernel-VM image must be available in the host filesystem as a
-prerequisite. The path to kernel-VM image is defined in `Constants.py`.