418 lines
14 KiB
Scheme
418 lines
14 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
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;;; Copyright © 2020-2023 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;; Copyright © 2021 Pierre Langlois <pierre.langlois@gmx.com>
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;;; Copyright © 2022 Marius Bakke <marius@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu tests virtualization)
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#:use-module (gnu tests)
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#:use-module (gnu image)
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#:use-module (gnu system)
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#:use-module (gnu system accounts)
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#:use-module (gnu system file-systems)
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#:use-module (gnu system image)
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#:use-module (gnu system images hurd)
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#:use-module ((gnu system shadow) #:select (%base-user-accounts))
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#:use-module (gnu system vm)
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#:use-module (gnu services)
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#:use-module (gnu services dbus)
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#:use-module (gnu services networking)
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#:use-module (gnu services virtualization)
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#:use-module (gnu packages ssh)
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#:use-module (gnu packages virtualization)
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#:use-module (guix gexp)
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#:use-module (guix records)
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#:use-module (guix store)
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#:use-module (guix modules)
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#:export (%test-libvirt
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%test-qemu-guest-agent
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%test-childhurd))
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;;;
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;;; Libvirt.
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;;;
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(define %libvirt-os
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(simple-operating-system
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(service dhcp-client-service-type)
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(service dbus-root-service-type)
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(service polkit-service-type)
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(service libvirt-service-type)))
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(define (run-libvirt-test)
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"Run tests in %LIBVIRT-OS."
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(define os
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(marionette-operating-system
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%libvirt-os
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#:imported-modules '((gnu services herd)
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(guix combinators))))
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(define vm
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(virtual-machine
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(operating-system os)
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(port-forwardings '())))
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(define test
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (srfi srfi-11) (srfi srfi-64)
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(gnu build marionette))
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(define marionette
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(make-marionette (list #$vm)))
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(test-runner-current (system-test-runner #$output))
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(test-begin "libvirt")
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(test-assert "service running"
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(marionette-eval
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'(begin
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(use-modules (gnu services herd))
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(match (start-service 'libvirtd)
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(#f #f)
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(('service response-parts ...)
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(match (assq-ref response-parts 'running)
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((pid) (number? pid))))))
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marionette))
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(test-eq "fetch version"
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0
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(marionette-eval
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`(begin
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(chdir "/tmp")
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(system* ,(string-append #$libvirt "/bin/virsh")
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"-c" "qemu:///system" "version"))
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marionette))
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(test-eq "connect"
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0
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(marionette-eval
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`(begin
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(chdir "/tmp")
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(system* ,(string-append #$libvirt "/bin/virsh")
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"-c" "qemu:///system" "connect"))
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marionette))
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(test-eq "create default network"
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0
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(marionette-eval
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'(begin
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(chdir "/tmp")
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(system* #$(file-append libvirt "/bin/virsh")
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"-c" "qemu:///system" "net-define"
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#$(file-append libvirt
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"/etc/libvirt/qemu/networks/default.xml")))
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marionette))
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(test-eq "start default network"
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0
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(marionette-eval
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'(begin
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(chdir "/tmp")
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(system* #$(file-append libvirt "/bin/virsh")
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"-c" "qemu:///system" "net-start" "default"))
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marionette))
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(test-end))))
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(gexp->derivation "libvirt-test" test))
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(define %test-libvirt
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(system-test
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(name "libvirt")
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(description "Connect to the running LIBVIRT service.")
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(value (run-libvirt-test))))
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;;;
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;;; QEMU Guest Agent service.
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;;;
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(define %qemu-guest-agent-os
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(simple-operating-system
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(service qemu-guest-agent-service-type)))
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(define (run-qemu-guest-agent-test)
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"Run tests in %QEMU-GUEST-AGENT-OS."
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(define os
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(marionette-operating-system
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%qemu-guest-agent-os
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#:imported-modules '((gnu services herd))))
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(define vm
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(virtual-machine
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(operating-system os)
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(port-forwardings '())))
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(define test
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (gnu build marionette)
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(ice-9 rdelim)
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(srfi srfi-64))
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(define marionette
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;; Ensure we look for the socket in the correct place below.
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(make-marionette (list #$vm) #:socket-directory "/tmp"))
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(define* (try-read port #:optional (attempts 10))
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;; Try reading from a port several times before giving up.
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(cond ((char-ready? port)
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(let ((response (read-line port)))
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(close-port port)
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response))
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((> attempts 1)
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(sleep 1)
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(try-read port (- attempts 1)))
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(else "")))
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(define (run command)
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;; Run a QEMU guest agent command and return the response.
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(let ((s (socket PF_UNIX SOCK_STREAM 0)))
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(connect s AF_UNIX "/tmp/qemu-ga")
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(display command s)
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(try-read s)))
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(test-runner-current (system-test-runner #$output))
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(test-begin "qemu-guest-agent")
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(test-assert "service running"
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(marionette-eval
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'(begin
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(use-modules (gnu services herd))
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(match (start-service 'qemu-guest-agent)
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(#f #f)
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(('service response-parts ...)
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(match (assq-ref response-parts 'running)
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((pid) (number? pid))))))
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marionette))
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(test-equal "ping guest"
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"{\"return\": {}}"
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(run "{\"execute\": \"guest-ping\"}"))
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(test-assert "get network interfaces"
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(string-contains
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(run "{\"execute\": \"guest-network-get-interfaces\"}")
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"127.0.0.1"))
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(test-end))))
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(gexp->derivation "qemu-guest-agent-test" test))
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(define %test-qemu-guest-agent
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(system-test
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(name "qemu-guest-agent")
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(description "Run commands in a virtual machine using QEMU guest agent.")
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(value (run-qemu-guest-agent-test))))
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;;;
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;;; GNU/Hurd virtual machines, aka. childhurds.
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;;;
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(define %childhurd-os
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(simple-operating-system
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(service dhcp-client-service-type)
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(service hurd-vm-service-type
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(hurd-vm-configuration
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(os (operating-system
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(inherit %hurd-vm-operating-system)
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(users (cons (user-account
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(name "test")
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(group "users")
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(password "")) ;empty password
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%base-user-accounts))))))))
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(define (run-childhurd-test)
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(define (import-module? module)
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;; This module is optional and depends on Guile-Gcrypt, do skip it.
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(and (guix-module-name? module)
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(not (equal? module '(guix store deduplication)))))
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(define os
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(marionette-operating-system
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%childhurd-os
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#:imported-modules (source-module-closure
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'((gnu services herd)
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(guix combinators)
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(gnu build install))
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#:select? import-module?)))
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(define vm
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(virtual-machine
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(operating-system os)
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(memory-size (* 1024 3))))
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(define (run-command-over-ssh . command)
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;; Program that runs COMMAND over SSH and prints the result on standard
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;; output.
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(let ()
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(define run
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(with-extensions (list guile-ssh)
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#~(begin
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(use-modules (ssh session)
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(ssh auth)
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(ssh popen)
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(ice-9 match)
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(ice-9 textual-ports))
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(let ((session (make-session #:user "test"
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#:port 10022
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#:host "localhost"
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#:log-verbosity 'rare)))
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(match (connect! session)
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('ok
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(userauth-password! session "")
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(display
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(get-string-all
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(open-remote-input-pipe* session #$@command))))
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(status
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(error "could not connect to childhurd over SSH"
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session status)))))))
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(program-file "run-command-over-ssh" run)))
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(define test
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (gnu build marionette)
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(srfi srfi-64)
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(ice-9 match))
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(define marionette
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;; Emulate the host CPU so that KVM is available inside as well
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;; ("nested KVM"), provided
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;; /sys/module/kvm_intel/parameters/nested (or similar) allows it.
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(make-marionette (list #$vm "-cpu" "host")))
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(test-runner-current (system-test-runner #$output))
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(test-begin "childhurd")
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(test-assert "service running"
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(marionette-eval
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'(begin
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(use-modules (gnu services herd)
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(ice-9 match))
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(match (start-service 'childhurd)
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(#f #f)
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(('service response-parts ...)
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(match (assq-ref response-parts 'running)
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((pid) (number? pid))))))
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marionette))
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(test-equal "childhurd SSH server replies"
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"SSH"
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;; Check from within the guest whether its childhurd's SSH
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;; server is reachable. Do that from the guest: port forwarding
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;; to the host won't work because QEMU listens on 127.0.0.1.
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(marionette-eval
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'(begin
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(use-modules (ice-9 match)
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(ice-9 textual-ports))
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(let loop ((n 60))
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(if (zero? n)
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'all-attempts-failed
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(let ((s (socket PF_INET SOCK_STREAM 0))
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(a (make-socket-address AF_INET
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INADDR_LOOPBACK
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10022)))
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(format #t "connecting to childhurd SSH server...~%")
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(connect s a)
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(match (get-string-n s 3)
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((? eof-object?)
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(close-port s)
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(sleep 1)
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(loop (- n 1)))
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(str
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(close-port s)
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str))))))
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marionette))
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(test-equal "SSH up and running"
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"childhurd GNU\n"
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;; Connect from the guest to the chidhurd over SSH and run the
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;; 'uname' command.
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(marionette-eval
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'(begin
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(use-modules (ice-9 popen))
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(get-string-all
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(open-input-pipe #$(run-command-over-ssh "uname" "-on"))))
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marionette))
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(test-assert "guix-daemon up and running"
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(let ((drv (marionette-eval
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'(begin
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(use-modules (ice-9 popen))
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(get-string-all
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(open-input-pipe
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#$(run-command-over-ssh "guix" "build" "coreutils"
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"--no-grafts" "-d"))))
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marionette)))
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;; We cannot compare the .drv with (raw-derivation-file
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;; coreutils) on the host: they may differ due to fixed-output
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;; derivations and changes introduced compared to the 'guix'
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;; package snapshot.
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(and (string-suffix? ".drv"
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(pk 'drv (string-trim-right drv)))
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drv)))
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(test-assert "copy-on-write store"
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;; Set up a writable store. The root partition is already an
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;; overlayfs, which is not suitable as the bottom part of this
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;; additional overlayfs; thus, create a tmpfs for the backing
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;; store.
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;; TODO: Remove this when <virtual-machine> creates a writable
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;; store.
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(marionette-eval
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'(begin
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(use-modules (gnu build install)
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(guix build syscalls))
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(mkdir "/run/writable-store")
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(mount "none" "/run/writable-store" "tmpfs")
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(mount-cow-store "/run/writable-store" "/backing-store")
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(system* "df" "-hT"))
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marionette))
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(test-equal "offloading"
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0
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(marionette-eval
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'(and (file-exists? "/etc/guix/machines.scm")
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(system* "guix" "offload" "test"))
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marionette))
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(test-end))))
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(gexp->derivation "childhurd-test" test))
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(define %test-childhurd
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(system-test
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(name "childhurd")
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(description
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"Connect to the GNU/Hurd virtual machine service, aka. a childhurd, making
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sure that the childhurd boots and runs its SSH server.")
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(value (run-childhurd-test))))
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