Arch LinuxホストのKVMにゲストをインストールしたときのメモ

個人的に設定を忘れないためのメモなので、特に読む必要はない。

前提条件

• systemdでブリッジデバイス作成済み
• 必要なパッケージ類はインストール済み
• https://wiki.archlinux.jp/index.php/OVMF_%E3%81%AB%E3%82%88%E3%82%8B_PCI_%E3%83%91%E3%82%B9%E3%82%B9%E3%83%AB%E3%83%BC#IOMMU_.E3.81.AE.E6.9C.89.E5.8A.B9.E5.8C.96 を読んでいる

virt-managerから起動しようとすると色々permission deniedとかでたので/etc/libvirt/qemu.confの変更

# The user for QEMU processes run by the system instance. It can be
# specified as a user name or as a user id. The qemu driver will try to
# parse this value first as a name and then, if the name doesn't exist,
# as a user id.
#
# Since a sequence of digits is a valid user name, a leading plus sign
# can be used to ensure that a user id will not be interpreted as a user
# name.
#
# Some examples of valid values are:
#
#       user = "qemu"   # A user named "qemu"
#       user = "+0"     # Super user (uid=0)
#       user = "100"    # A user named "100" or a user with uid=100
#
user = "root"

# The group for QEMU processes run by the system instance. It can be
# specified in a similar way to user.
group="root"

# Path to the setuid helper for creating tap devices.  This executable
# is used to create <source type='bridge'> interfaces when libvirtd is
# running unprivileged.  libvirt invokes the helper directly, instead
# of using "-netdev bridge", for security reasons.
bridge_helper = "/usr/lib/qemu/qemu-bridge-helper"

vnet0にIPv4が割り当てられていないっぽかったので、iptablesの変更

# iptables -I FORWARD -m physdev  --physdev-is-bridged -j ACCEPT