#!/bin/bash # # lib/nova_plugins/functions-libvirt # Common libvirt configuration functions # Dependencies: # ``functions`` file # ``STACK_USER`` has to be defined # Save trace setting LV_XTRACE=$(set +o | grep xtrace) set +o xtrace # Defaults # -------- # Turn on selective debug log filters for libvirt. # (NOTE: Enabling this by default, because the log filters enabled in # 'configure_libvirt' function further below are _selective_ and not # extremely verbose.) DEBUG_LIBVIRT=$(trueorfalse True DEBUG_LIBVIRT) # Installs required distro-specific libvirt packages. function install_libvirt { if is_ubuntu; then if is_arch "aarch64" && [[ ${DISTRO} == "trusty" ]]; then install_package qemu-system else install_package qemu-kvm install_package libguestfs0 fi install_package libvirt-bin libvirt-dev pip_install_gr libvirt-python #pip_install_gr elif is_fedora || is_suse; then install_package kvm # there is a dependency issue with kvm (which is really just a # wrapper to qemu-system-x86) that leaves some bios files out, # so install qemu-kvm (which shouldn't strictly be needed, as # everything has been merged into qemu-system-x86) to bring in # the right packages. see # https://bugzilla.redhat.com/show_bug.cgi?id=1235890 install_package qemu-kvm install_package libvirt libvirt-devel pip_install_gr libvirt-python fi } # Configures the installed libvirt system so that is accessible by # STACK_USER via qemu:///system with management capabilities. function configure_libvirt { if is_service_enabled neutron && is_neutron_ovs_base_plugin && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF; then # Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces cat </dev/null; then sudo groupadd $LIBVIRT_GROUP fi add_user_to_group $STACK_USER $LIBVIRT_GROUP # Enable server side traces for libvirtd if [[ "$DEBUG_LIBVIRT" = "True" ]] ; then if is_ubuntu; then # Unexpectedly binary package builds in ubuntu get fully qualified # source file paths, not relative paths. This screws with the matching # of '1:libvirt' making everything turn on. So use libvirt.c for now. # This will have to be re-visited when Ubuntu ships libvirt >= 1.2.3 local log_filters="1:libvirt.c 1:qemu 1:conf 1:security 3:object 3:event 3:json 3:file 1:util 1:qemu_monitor" else local log_filters="1:libvirt 1:qemu 1:conf 1:security 3:object 3:event 3:json 3:file 1:util 1:qemu_monitor" fi local log_outputs="1:file:/var/log/libvirt/libvirtd.log" if ! grep -q "log_filters=\"$log_filters\"" /etc/libvirt/libvirtd.conf; then echo "log_filters=\"$log_filters\"" | sudo tee -a /etc/libvirt/libvirtd.conf fi if ! grep -q "log_outputs=\"$log_outputs\"" /etc/libvirt/libvirtd.conf; then echo "log_outputs=\"$log_outputs\"" | sudo tee -a /etc/libvirt/libvirtd.conf fi fi # Update the libvirt cpu map with a gate64 cpu model. This enables nova # live migration for 64bit guest OSes on heterogenous cloud "hardware". if [[ -f /usr/share/libvirt/cpu_map.xml ]] ; then sudo $TOP_DIR/tools/cpu_map_update.py /usr/share/libvirt/cpu_map.xml fi # libvirt detects various settings on startup, as we potentially changed # the system configuration (modules, filesystems), we need to restart # libvirt to detect those changes. Use a stop start as otherwise the new # cpu_map is not loaded properly on some systems (Ubuntu). stop_service $LIBVIRT_DAEMON start_service $LIBVIRT_DAEMON } # Restore xtrace $LV_XTRACE # Local variables: # mode: shell-script # End: