da4e409483
The old 'target' field is deprecated; adjust the sources to use the new 'targets' one instead. * doc/guix-cookbook.texi<target>: Replace by 'targets'. * gnu/bootloader/grub.scm: Likewise. * gnu/installer/parted.scm: Likewise. * gnu/machine/digital-ocean.scm: Likewise. * gnu/system/examples/asus-c201.tmpl: Likewise * gnu/system/examples/bare-bones.tmpl: Likewise * gnu/system/examples/bare-hurd.tmpl: Likewise * gnu/system/examples/beaglebone-black.tmpl: Likewise * gnu/system/examples/desktop.tmpl: Likewise * gnu/system/examples/docker-image.tmpl: Likewise * gnu/system/examples/lightweight-desktop.tmpl: Likewise * gnu/system/examples/vm-image.tmpl: Likewise * gnu/system/examples/yggdrasil.tmpl: Likewise * gnu/system/hurd.scm: Likewise * gnu/system/images/hurd.scm: Likewise * gnu/system/images/novena.scm: Likewise * gnu/system/images/pine64.scm: Likewise * gnu/system/images/pinebook-pro.scm: Likewise * gnu/system/images/rock64.scm: Likewise * gnu/system/install.scm: Likewise * gnu/system/vm.scm: Likewise * gnu/tests.scm: Likewise * gnu/tests/ganeti.scm: Likewise * gnu/tests/install.scm: Likewise * gnu/tests/nfs.scm: Likewise * gnu/tests/telephony.scm: Likewise * tests/boot-parameters.scm: Likewise * tests/system.scm: Likewise
848 lines
37 KiB
Scheme
848 lines
37 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2016 Christine Lemmer-Webber <cwebber@dustycloud.org>
|
||
;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
|
||
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
|
||
;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com>
|
||
;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu system vm)
|
||
#:use-module (guix config)
|
||
#:use-module (guix store)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix derivations)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix monads)
|
||
#:use-module (guix records)
|
||
#:use-module (guix modules)
|
||
#:use-module (guix utils)
|
||
#:use-module (gcrypt hash)
|
||
#:use-module (guix base32)
|
||
#:use-module ((guix self) #:select (make-config.scm))
|
||
|
||
#:use-module ((gnu build vm)
|
||
#:select (qemu-command))
|
||
#:use-module (gnu packages base)
|
||
#:use-module (gnu packages bootloaders)
|
||
#:use-module (gnu packages cdrom)
|
||
#:use-module (gnu packages compression)
|
||
#:use-module (gnu packages guile)
|
||
#:autoload (gnu packages gnupg) (guile-gcrypt)
|
||
#:use-module (gnu packages gawk)
|
||
#:use-module (gnu packages bash)
|
||
#:use-module (gnu packages virtualization)
|
||
#:use-module (gnu packages disk)
|
||
#:use-module (gnu packages linux)
|
||
|
||
#:use-module (gnu bootloader)
|
||
#:use-module (gnu bootloader grub)
|
||
#:use-module (gnu system linux-container)
|
||
#:use-module (gnu system linux-initrd)
|
||
#:use-module (gnu bootloader)
|
||
#:use-module (gnu system file-systems)
|
||
#:use-module (gnu system)
|
||
#:use-module (gnu services)
|
||
#:use-module (gnu services base)
|
||
#:use-module (gnu system uuid)
|
||
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (rnrs bytevectors)
|
||
#:use-module (ice-9 match)
|
||
|
||
#:export (expression->derivation-in-linux-vm
|
||
qemu-image
|
||
virtualized-operating-system
|
||
|
||
system-qemu-image/shared-store
|
||
system-qemu-image/shared-store-script
|
||
system-docker-image
|
||
|
||
virtual-machine
|
||
virtual-machine?))
|
||
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; Tools to evaluate build expressions within virtual machines.
|
||
;;;
|
||
;;; Code:
|
||
|
||
;; By default, the msize value is 8 KiB, which according to QEMU is
|
||
;; insufficient and would degrade performance. The msize value should roughly
|
||
;; match the bandwidth of the system's IO (see:
|
||
;; https://wiki.qemu.org/Documentation/9psetup#msize). Use 100 MiB as a
|
||
;; conservative default.
|
||
(define %default-msize-value (* 100 (expt 2 20))) ;100 MiB
|
||
|
||
(define %linux-vm-file-systems
|
||
;; File systems mounted for 'derivation-in-linux-vm'. These are shared with
|
||
;; the host over 9p.
|
||
;;
|
||
;; The 9p documentation says that cache=loose is "intended for exclusive,
|
||
;; read-only mounts", without additional details. It's much faster than the
|
||
;; default cache=none, especially when copying and registering store items.
|
||
;; Thus, use cache=loose, except for /xchg where we want to ensure
|
||
;; consistency.
|
||
(list (file-system
|
||
(mount-point (%store-prefix))
|
||
(device "store")
|
||
(type "9p")
|
||
(needed-for-boot? #t)
|
||
(flags '(read-only))
|
||
(options (format #f "trans=virtio,cache=loose,msize=~a"
|
||
%default-msize-value))
|
||
(check? #f))
|
||
(file-system
|
||
(mount-point "/xchg")
|
||
(device "xchg")
|
||
(type "9p")
|
||
(needed-for-boot? #t)
|
||
(options (format #f "trans=virtio,msize=~a" %default-msize-value))
|
||
(check? #f))
|
||
(file-system
|
||
(mount-point "/tmp")
|
||
(device "tmp")
|
||
(type "9p")
|
||
(needed-for-boot? #t)
|
||
(options (format #f "trans=virtio,cache=loose,msize=~a"
|
||
%default-msize-value))
|
||
(check? #f))))
|
||
|
||
(define not-config?
|
||
;; Select (guix …) and (gnu …) modules, except (guix config).
|
||
(match-lambda
|
||
(('guix 'config) #f)
|
||
(('guix rest ...) #t)
|
||
(('gnu rest ...) #t)
|
||
(rest #f)))
|
||
|
||
(define gcrypt-sqlite3&co
|
||
;; Guile-Gcrypt, Guile-SQLite3, and their propagated inputs.
|
||
(append-map (lambda (package)
|
||
(cons package
|
||
(match (package-transitive-propagated-inputs package)
|
||
(((labels packages) ...)
|
||
packages))))
|
||
(list guile-gcrypt guile-sqlite3)))
|
||
|
||
(define* (expression->derivation-in-linux-vm name exp
|
||
#:key
|
||
(system (%current-system))
|
||
(linux linux-libre)
|
||
initrd
|
||
(qemu qemu-minimal)
|
||
(env-vars '())
|
||
(guile-for-build
|
||
(%guile-for-build))
|
||
(file-systems
|
||
%linux-vm-file-systems)
|
||
|
||
(single-file-output? #f)
|
||
(make-disk-image? #f)
|
||
(references-graphs #f)
|
||
(memory-size 256)
|
||
(disk-image-format "qcow2")
|
||
(disk-image-size 'guess)
|
||
|
||
(substitutable? #t))
|
||
"Evaluate EXP in a QEMU virtual machine running LINUX with INITRD (a
|
||
derivation). The virtual machine runs with MEMORY-SIZE MiB of memory. In the
|
||
virtual machine, EXP has access to FILE-SYSTEMS, which, by default, includes a
|
||
9p share of the store, the '/xchg' where EXP should put its output file(s),
|
||
and a 9p share of /tmp.
|
||
|
||
If SINGLE-FILE-OUTPUT? is true, copy a single file from '/xchg' to OUTPUT.
|
||
Otherwise, copy the contents of /xchg to a new directory OUTPUT.
|
||
|
||
When MAKE-DISK-IMAGE? is true, then create a QEMU disk image of type
|
||
DISK-IMAGE-FORMAT (e.g., 'qcow2' or 'raw'), of DISK-IMAGE-SIZE bytes and
|
||
return it. When DISK-IMAGE-SIZE is 'guess, estimate the image size based
|
||
based on the size of the closure of REFERENCES-GRAPHS.
|
||
|
||
When REFERENCES-GRAPHS is true, it must be a list of file name/store path
|
||
pairs, as for `derivation'. The files containing the reference graphs are
|
||
made available under the /xchg CIFS share.
|
||
|
||
SUBSTITUTABLE? determines whether the returned derivation should be marked as
|
||
substitutable."
|
||
(define user-builder
|
||
(program-file "builder-in-linux-vm" exp))
|
||
|
||
(define loader
|
||
;; Invoke USER-BUILDER instead using 'primitive-load'. The reason for
|
||
;; this is to allow USER-BUILDER to dlopen stuff by using a full-featured
|
||
;; Guile, which it couldn't do using the statically-linked guile used in
|
||
;; the initrd. See example at
|
||
;; <https://lists.gnu.org/archive/html/guix-devel/2017-10/msg00233.html>.
|
||
(program-file "linux-vm-loader"
|
||
;; Communicate USER-BUILDER's exit status via /xchg so that
|
||
;; the host can distinguish between success, failure, and
|
||
;; kernel panic.
|
||
#~(let ((status (system* #$user-builder)))
|
||
(call-with-output-file "/xchg/.exit-status"
|
||
(lambda (port)
|
||
(write status port)))
|
||
(sync)
|
||
(reboot))))
|
||
|
||
(define-syntax-rule (check predicate)
|
||
(let-system (system target)
|
||
(predicate (or target system))))
|
||
|
||
(let ((initrd (or initrd
|
||
(base-initrd file-systems
|
||
#:on-error 'backtrace
|
||
#:linux linux
|
||
#:linux-modules %base-initrd-modules
|
||
#:qemu-networking? #t))))
|
||
|
||
(define builder
|
||
;; Code that launches the VM that evaluates EXP.
|
||
(with-extensions gcrypt-sqlite3&co
|
||
(with-imported-modules `(,@(source-module-closure
|
||
'((guix build utils)
|
||
(gnu build vm))
|
||
#:select? not-config?)
|
||
|
||
;; For consumption by (gnu store database).
|
||
((guix config) => ,(make-config.scm)))
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(gnu build vm))
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded
|
||
;; by 'estimated-partition-size' below.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(let* ((native-inputs
|
||
'#+(list qemu (canonical-package coreutils)))
|
||
(linux (string-append
|
||
#+linux "/"
|
||
#+(system-linux-image-file-name system)))
|
||
(initrd #+initrd)
|
||
(loader #+loader)
|
||
(graphs '#$(match references-graphs
|
||
(((graph-files . _) ...) graph-files)
|
||
(_ #f)))
|
||
(target #$(let-system (system target)
|
||
(or target system)))
|
||
(size #$(if (eq? 'guess disk-image-size)
|
||
#~(+ (* 70 (expt 2 20)) ;ESP
|
||
(estimated-partition-size graphs))
|
||
disk-image-size)))
|
||
|
||
(set-path-environment-variable "PATH" '("bin") native-inputs)
|
||
|
||
(load-in-linux-vm loader
|
||
#:output #$output
|
||
#:linux linux #:initrd initrd
|
||
#:qemu (qemu-command target)
|
||
#:memory-size #$memory-size
|
||
#:make-disk-image? #$make-disk-image?
|
||
#:single-file-output? #$single-file-output?
|
||
#:disk-image-format #$disk-image-format
|
||
#:disk-image-size size
|
||
#:references-graphs graphs))))))
|
||
|
||
(gexp->derivation name builder
|
||
;; TODO: Require the "kvm" feature.
|
||
#:system system
|
||
#:target #f ;EXP is always executed natively
|
||
#:env-vars env-vars
|
||
#:guile-for-build guile-for-build
|
||
#:references-graphs references-graphs
|
||
#:substitutable? substitutable?)))
|
||
|
||
(define (has-guix-service-type? os)
|
||
"Return true if OS contains a service of the type GUIX-SERVICE-TYPE."
|
||
(not (not (find (lambda (service)
|
||
(eq? (service-kind service) guix-service-type))
|
||
(operating-system-services os)))))
|
||
|
||
(define* (qemu-image #:key
|
||
(name "qemu-image")
|
||
(system (%current-system))
|
||
(target (%current-target-system))
|
||
(qemu qemu-minimal)
|
||
(disk-image-size 'guess)
|
||
(disk-image-format "qcow2")
|
||
(file-system-type "ext4")
|
||
(file-system-options '())
|
||
(device-nodes 'linux)
|
||
(extra-directives '())
|
||
file-system-label
|
||
file-system-uuid
|
||
os
|
||
bootcfg-drv
|
||
bootloader
|
||
(register-closures? (has-guix-service-type? os))
|
||
(inputs '())
|
||
copy-inputs?
|
||
(substitutable? #t))
|
||
"Return a bootable, stand-alone QEMU image of type DISK-IMAGE-FORMAT (e.g.,
|
||
'qcow2' or 'raw'), with a root partition of type FILE-SYSTEM-TYPE.
|
||
Optionally, FILE-SYSTEM-LABEL can be specified as the volume name for the root
|
||
partition; likewise FILE-SYSTEM-UUID, if true, specifies the UUID of the root
|
||
partition (a UUID object). FILE-SYSTEM-OPTIONS is an optional list of
|
||
command-line options passed to 'mkfs.ext4' (or similar).
|
||
|
||
The returned image is a full disk image that runs OS-DERIVATION,
|
||
with a GRUB installation that uses GRUB-CONFIGURATION as its configuration
|
||
file (GRUB-CONFIGURATION must be the name of a file in the VM.)
|
||
|
||
INPUTS is a list of inputs (as for packages). When COPY-INPUTS? is true, copy
|
||
all of INPUTS into the image being built. When REGISTER-CLOSURES? is true,
|
||
register INPUTS in the store database of the image so that Guix can be used in
|
||
the image. By default, REGISTER-CLOSURES? is set to true only if a service of
|
||
type GUIX-SERVICE-TYPE is present in the services definition of the operating
|
||
system.
|
||
|
||
When DEVICE-NODES is 'linux, create Linux-device block and character devices
|
||
under /dev. When it is 'hurd, do Hurdish things.
|
||
|
||
EXTRA-DIRECTIVES is an optional list of directives to populate the root file
|
||
system that is passed to 'populate-root-file-system'."
|
||
(define schema
|
||
(and register-closures?
|
||
(local-file (search-path %load-path
|
||
"guix/store/schema.sql"))))
|
||
|
||
(define preserve-target
|
||
(if target
|
||
(lambda (obj)
|
||
(with-parameters ((%current-target-system target))
|
||
obj))
|
||
identity))
|
||
|
||
(define inputs*
|
||
(map (match-lambda
|
||
((name thing)
|
||
`(,name ,(preserve-target thing)))
|
||
((name thing output)
|
||
`(,name ,(preserve-target thing) ,output)))
|
||
inputs))
|
||
|
||
(expression->derivation-in-linux-vm
|
||
name
|
||
(with-extensions gcrypt-sqlite3&co
|
||
(with-imported-modules `(,@(source-module-closure '((gnu build vm)
|
||
(gnu build bootloader)
|
||
(gnu build hurd-boot)
|
||
(guix store database)
|
||
(guix build utils))
|
||
#:select? not-config?)
|
||
((guix config) => ,(make-config.scm)))
|
||
#~(begin
|
||
(use-modules (gnu build bootloader)
|
||
(gnu build vm)
|
||
((gnu build hurd-boot)
|
||
#:select (make-hurd-device-nodes))
|
||
((gnu build linux-boot)
|
||
#:select (make-essential-device-nodes))
|
||
(guix store database)
|
||
(guix build utils)
|
||
(srfi srfi-26)
|
||
(ice-9 binary-ports))
|
||
|
||
(sql-schema #$schema)
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(let ((inputs
|
||
'#+(append (list parted e2fsprogs dosfstools)
|
||
(map canonical-package
|
||
(list sed grep coreutils findutils gawk))))
|
||
|
||
;; This variable is unused but allows us to add INPUTS-TO-COPY
|
||
;; as inputs.
|
||
(to-register
|
||
'#$(map (match-lambda
|
||
((name thing) thing)
|
||
((name thing output) `(,thing ,output)))
|
||
inputs*)))
|
||
|
||
(set-path-environment-variable "PATH" '("bin" "sbin") inputs)
|
||
|
||
(let* ((graphs '#$(match inputs
|
||
(((names . _) ...)
|
||
names)))
|
||
(initialize (root-partition-initializer
|
||
#:extra-directives '#$extra-directives
|
||
#:closures graphs
|
||
#:copy-closures? #$copy-inputs?
|
||
#:register-closures? #$register-closures?
|
||
#:system-directory #$(preserve-target os)
|
||
|
||
#:make-device-nodes
|
||
#$(match device-nodes
|
||
('linux #~make-essential-device-nodes)
|
||
('hurd #~make-hurd-device-nodes))
|
||
|
||
;; Disable deduplication to speed things up,
|
||
;; and because it doesn't help much for a
|
||
;; single system generation.
|
||
#:deduplicate? #f))
|
||
(root-size #$(if (eq? 'guess disk-image-size)
|
||
#~(max
|
||
;; Minimum 20 MiB root size
|
||
(* 20 (expt 2 20))
|
||
(estimated-partition-size
|
||
(map (cut string-append "/xchg/" <>)
|
||
graphs)))
|
||
(- disk-image-size
|
||
(* 50 (expt 2 20)))))
|
||
(partitions
|
||
(append
|
||
(list (partition
|
||
(size root-size)
|
||
(label #$file-system-label)
|
||
(uuid #$(and=> file-system-uuid
|
||
uuid-bytevector))
|
||
(file-system #$file-system-type)
|
||
(file-system-options '#$file-system-options)
|
||
(flags '(boot))
|
||
(initializer initialize)))
|
||
;; Append a small EFI System Partition for use with UEFI
|
||
;; bootloaders if we are not targeting ARM because UEFI
|
||
;; support in U-Boot is experimental.
|
||
;;
|
||
;; FIXME: ‘target-arm?’ may be not operate on the right
|
||
;; system/target values. Rewrite using ‘let-system’ when
|
||
;; available.
|
||
(if #$(target-arm?)
|
||
'()
|
||
(list (partition
|
||
;; The standalone grub image is about 10MiB, but
|
||
;; leave some room for custom or multiple images.
|
||
(size (* 40 (expt 2 20)))
|
||
(label "GNU-ESP") ;cosmetic only
|
||
;; Use "vfat" here since this property is used
|
||
;; when mounting. The actual FAT-ness is based
|
||
;; on file system size (16 in this case).
|
||
(file-system "vfat")
|
||
(flags '(esp)))))))
|
||
(grub-efi #$(and (not (target-arm?)) grub-efi)))
|
||
(initialize-hard-disk "/dev/vda"
|
||
#:partitions partitions
|
||
#:grub-efi grub-efi
|
||
#:bootloader-package
|
||
#+(bootloader-package bootloader)
|
||
#:bootcfg #$(preserve-target bootcfg-drv)
|
||
#:bootcfg-location
|
||
#$(bootloader-configuration-file bootloader)
|
||
#:bootloader-installer
|
||
#+(bootloader-installer bootloader)))))))
|
||
#:system system
|
||
#:make-disk-image? #t
|
||
#:disk-image-size disk-image-size
|
||
#:disk-image-format disk-image-format
|
||
#:references-graphs inputs*
|
||
#:substitutable? substitutable?))
|
||
|
||
(define* (system-docker-image os
|
||
#:key
|
||
(name "guix-docker-image")
|
||
(memory-size 256)
|
||
(register-closures? (has-guix-service-type? os))
|
||
shared-network?)
|
||
"Build a docker image. OS is the desired <operating-system>. NAME is the
|
||
base name to use for the output file. When SHARED-NETWORK? is true, assume
|
||
that the container will share network with the host and thus doesn't need a
|
||
DHCP client, nscd, and so on.
|
||
|
||
When REGISTER-CLOSURES? is true, register the closure of OS with Guix in the
|
||
resulting Docker image. By default, REGISTER-CLOSURES? is set to true only if
|
||
a service of type GUIX-SERVICE-TYPE is present in the services definition of
|
||
the operating system."
|
||
(define schema
|
||
(and register-closures?
|
||
(local-file (search-path %load-path
|
||
"guix/store/schema.sql"))))
|
||
|
||
(define boot-program
|
||
;; Program that runs the boot script of OS, which in turn starts shepherd.
|
||
(program-file "boot-program"
|
||
#~(let ((system (cadr (command-line))))
|
||
(setenv "GUIX_NEW_SYSTEM" system)
|
||
(execl #$(file-append guile-3.0 "/bin/guile")
|
||
"guile" "--no-auto-compile"
|
||
(string-append system "/boot")))))
|
||
|
||
|
||
(let ((os (operating-system-with-gc-roots
|
||
(containerized-operating-system os '()
|
||
#:shared-network?
|
||
shared-network?)
|
||
(list boot-program)))
|
||
(name (string-append name ".tar.gz"))
|
||
(graph "system-graph"))
|
||
(define build
|
||
(with-extensions (cons guile-json-3 ;for (guix docker)
|
||
gcrypt-sqlite3&co) ;for (guix store database)
|
||
(with-imported-modules `(,@(source-module-closure
|
||
'((guix docker)
|
||
(guix store database)
|
||
(guix build utils)
|
||
(guix build store-copy)
|
||
(gnu build vm))
|
||
#:select? not-config?)
|
||
((guix config) => ,(make-config.scm)))
|
||
#~(begin
|
||
(use-modules (guix docker)
|
||
(guix build utils)
|
||
(gnu build vm)
|
||
(srfi srfi-19)
|
||
(guix build store-copy)
|
||
(guix store database))
|
||
|
||
;; Set the SQL schema location.
|
||
(sql-schema #$schema)
|
||
|
||
;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-utf8-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
(let* (;; This initializer requires elevated privileges that are
|
||
;; not normally available in the build environment (e.g.,
|
||
;; it needs to create device nodes). In order to obtain
|
||
;; such privileges, we run it as root in a VM.
|
||
(initialize (root-partition-initializer
|
||
#:closures '(#$graph)
|
||
#:register-closures? #$register-closures?
|
||
#:system-directory #$os
|
||
;; De-duplication would fail due to
|
||
;; cross-device link errors, so don't do it.
|
||
#:deduplicate? #f))
|
||
;; Even as root in a VM, the initializer would fail due to
|
||
;; lack of privileges if we use a root-directory that is on
|
||
;; a file system that is shared with the host (e.g., /tmp).
|
||
(root-directory "/guixsd-system-root"))
|
||
(set-path-environment-variable "PATH" '("bin" "sbin") '(#+tar))
|
||
(mkdir root-directory)
|
||
(initialize root-directory)
|
||
(build-docker-image
|
||
(string-append "/xchg/" #$name) ;; The output file.
|
||
(cons* root-directory
|
||
(map store-info-item
|
||
(call-with-input-file
|
||
(string-append "/xchg/" #$graph)
|
||
read-reference-graph)))
|
||
#$os
|
||
#:entry-point '(#$boot-program #$os)
|
||
#:compressor '(#+(file-append gzip "/bin/gzip") "-9n")
|
||
#:creation-time (make-time time-utc 0 1)
|
||
#:transformations `((,root-directory -> ""))))))))
|
||
|
||
(expression->derivation-in-linux-vm
|
||
name build
|
||
#:memory-size memory-size
|
||
#:make-disk-image? #f
|
||
#:single-file-output? #t
|
||
#:references-graphs `((,graph ,os)))))
|
||
|
||
|
||
;;;
|
||
;;; VMs that share file systems with the host.
|
||
;;;
|
||
|
||
(define (file-system->mount-tag fs)
|
||
"Return a 9p mount tag for host file system FS."
|
||
;; QEMU mount tags must be ASCII, at most 31-byte long, cannot contain
|
||
;; slashes, and cannot start with '_'. Compute an identifier that
|
||
;; corresponds to the rules.
|
||
(string-append "TAG"
|
||
(string-drop (bytevector->base32-string
|
||
(sha1 (string->utf8 fs)))
|
||
4)))
|
||
|
||
(define (mapping->file-system mapping)
|
||
"Return a 9p file system that realizes MAPPING."
|
||
(match mapping
|
||
(($ <file-system-mapping> source target writable?)
|
||
(file-system
|
||
(mount-point target)
|
||
(device (file-system->mount-tag source))
|
||
(type "9p")
|
||
(flags (if writable? '() '(read-only)))
|
||
(options (string-append "trans=virtio"
|
||
(if writable? "" ",cache=loose")
|
||
",msize=" (number->string %default-msize-value)))
|
||
(check? #f)
|
||
(create-mount-point? #t)))))
|
||
|
||
(define* (virtualized-operating-system os mappings #:optional (full-boot? #f))
|
||
"Return an operating system based on OS suitable for use in a virtualized
|
||
environment with the store shared with the host. MAPPINGS is a list of
|
||
<file-system-mapping> to realize in the virtualized OS."
|
||
(define user-file-systems
|
||
;; Remove file systems that conflict with those added below, or that are
|
||
;; normally bound to real devices.
|
||
(remove (lambda (fs)
|
||
(let ((target (file-system-mount-point fs))
|
||
(source (file-system-device fs)))
|
||
(or (string=? target (%store-prefix))
|
||
(string=? target "/")
|
||
(and (string? source)
|
||
(string-prefix? "/dev/" source))
|
||
|
||
;; Labels and UUIDs are necessarily invalid in the VM.
|
||
(and (file-system-mount? fs)
|
||
(or (file-system-label? source)
|
||
(uuid? source))))))
|
||
(operating-system-file-systems os)))
|
||
|
||
(define virtual-file-systems
|
||
(cons (file-system
|
||
(mount-point "/")
|
||
(device "/dev/vda1")
|
||
(type "ext4"))
|
||
|
||
(append (map mapping->file-system mappings)
|
||
user-file-systems)))
|
||
|
||
(operating-system (inherit os)
|
||
|
||
;; XXX: Until we run QEMU with UEFI support (with the OVMF firmware),
|
||
;; force the traditional i386/BIOS method.
|
||
;; See <https://bugs.gnu.org/28768>.
|
||
(bootloader (bootloader-configuration
|
||
(inherit (operating-system-bootloader os))
|
||
(bootloader grub-bootloader)
|
||
(targets '("/dev/vda"))))
|
||
|
||
(initrd (lambda (file-systems . rest)
|
||
(apply (operating-system-initrd os)
|
||
file-systems
|
||
#:volatile-root? #t
|
||
rest)))
|
||
|
||
;; Disable swap.
|
||
(swap-devices '())
|
||
|
||
;; XXX: When FULL-BOOT? is true, do not add a 9p mount for /gnu/store
|
||
;; since that would lead the bootloader config to look for the kernel and
|
||
;; initrd in it.
|
||
(file-systems (if full-boot?
|
||
virtual-file-systems
|
||
(cons
|
||
(file-system
|
||
(inherit (mapping->file-system %store-mapping))
|
||
(needed-for-boot? #t))
|
||
virtual-file-systems)))))
|
||
|
||
(define* (system-qemu-image/shared-store
|
||
os
|
||
#:key
|
||
(system (%current-system))
|
||
(target (%current-target-system))
|
||
full-boot?
|
||
(disk-image-size (* (if full-boot? 500 30) (expt 2 20))))
|
||
"Return a derivation that builds a QEMU image of OS that shares its store
|
||
with the host.
|
||
|
||
When FULL-BOOT? is true, return an image that does a complete boot sequence,
|
||
bootloaded included; thus, make a disk image that contains everything the
|
||
bootloader refers to: OS kernel, initrd, bootloader data, etc."
|
||
(define root-uuid
|
||
;; Use a fixed UUID to improve determinism.
|
||
(operating-system-uuid os 'dce))
|
||
|
||
(define bootcfg
|
||
(operating-system-bootcfg os))
|
||
|
||
;; XXX: When FULL-BOOT? is true, we end up creating an image that contains
|
||
;; BOOTCFG and all its dependencies, including the output of OS.
|
||
;; This is more than needed (we only need the kernel, initrd, GRUB for its
|
||
;; font, and the background image), but it's hard to filter that.
|
||
(qemu-image #:os os
|
||
#:system system
|
||
#:target target
|
||
#:bootcfg-drv bootcfg
|
||
#:bootloader (bootloader-configuration-bootloader
|
||
(operating-system-bootloader os))
|
||
#:disk-image-size disk-image-size
|
||
#:file-system-uuid root-uuid
|
||
#:inputs (if full-boot?
|
||
`(("bootcfg" ,bootcfg))
|
||
'())
|
||
|
||
;; XXX: Passing #t here is too slow, so let it off by default.
|
||
#:register-closures? #f
|
||
#:copy-inputs? full-boot?))
|
||
|
||
(define* (common-qemu-options image shared-fs)
|
||
"Return the a string-value gexp with the common QEMU options to boot IMAGE,
|
||
with '-virtfs' options for the host file systems listed in SHARED-FS."
|
||
|
||
(define (virtfs-option fs)
|
||
#~(format #f "-virtfs local,path=~s,security_model=none,mount_tag=~s"
|
||
#$fs #$(file-system->mount-tag fs)))
|
||
|
||
#~(;; Only enable kvm if we see /dev/kvm exists.
|
||
;; This allows users without hardware virtualization to still use these
|
||
;; commands.
|
||
#$@(if (file-exists? "/dev/kvm")
|
||
'("-enable-kvm")
|
||
'())
|
||
|
||
"-no-reboot"
|
||
"-object" "rng-random,filename=/dev/urandom,id=guixsd-vm-rng"
|
||
"-device" "virtio-rng-pci,rng=guixsd-vm-rng"
|
||
|
||
#$@(map virtfs-option shared-fs)
|
||
"-vga std"
|
||
(format #f "-drive file=~a,if=virtio,cache=writeback,werror=report,readonly=on"
|
||
#$image)))
|
||
|
||
(define* (system-qemu-image/shared-store-script os
|
||
#:key
|
||
(system (%current-system))
|
||
(target (%current-target-system))
|
||
(qemu qemu)
|
||
(graphic? #t)
|
||
(memory-size 256)
|
||
(mappings '())
|
||
full-boot?
|
||
(disk-image-size
|
||
(* (if full-boot? 500 70)
|
||
(expt 2 20)))
|
||
(options '()))
|
||
"Return a derivation that builds a script to run a virtual machine image of
|
||
OS that shares its store with the host. The virtual machine runs with
|
||
MEMORY-SIZE MiB of memory.
|
||
|
||
MAPPINGS is a list of <file-system-mapping> specifying mapping of host file
|
||
systems into the guest.
|
||
|
||
When FULL-BOOT? is true, the returned script runs everything starting from the
|
||
bootloader; otherwise it directly starts the operating system kernel. The
|
||
DISK-IMAGE-SIZE parameter specifies the size in bytes of the root disk image;
|
||
it is mostly useful when FULL-BOOT? is true."
|
||
(mlet* %store-monad ((os -> (virtualized-operating-system os mappings full-boot?))
|
||
(image (system-qemu-image/shared-store
|
||
os
|
||
#:system system
|
||
#:target target
|
||
#:full-boot? full-boot?
|
||
#:disk-image-size disk-image-size)))
|
||
(define kernel-arguments
|
||
#~(list #$@(if graphic? #~() #~("console=ttyS0"))
|
||
#+@(operating-system-kernel-arguments os "/dev/vda1")))
|
||
|
||
(define qemu-exec
|
||
#~(list #+(file-append qemu "/bin/"
|
||
(qemu-command (or target system)))
|
||
#$@(if full-boot?
|
||
#~()
|
||
#~("-kernel" #$(operating-system-kernel-file os)
|
||
"-initrd" #$(file-append os "/initrd")
|
||
(format #f "-append ~s"
|
||
(string-join #$kernel-arguments " "))))
|
||
#$@(common-qemu-options image
|
||
(map file-system-mapping-source
|
||
(cons %store-mapping mappings)))
|
||
"-m " (number->string #$memory-size)
|
||
#$@options))
|
||
|
||
(define builder
|
||
#~(call-with-output-file #$output
|
||
(lambda (port)
|
||
(format port "#!~a~% exec ~a \"$@\"~%"
|
||
#+(file-append bash "/bin/sh")
|
||
(string-join #$qemu-exec " "))
|
||
(chmod port #o555))))
|
||
|
||
(gexp->derivation "run-vm.sh" builder)))
|
||
|
||
|
||
;;;
|
||
;;; High-level abstraction.
|
||
;;;
|
||
|
||
(define-record-type* <virtual-machine> %virtual-machine
|
||
make-virtual-machine
|
||
virtual-machine?
|
||
(operating-system virtual-machine-operating-system) ;<operating-system>
|
||
(qemu virtual-machine-qemu ;<package>
|
||
(default qemu))
|
||
(graphic? virtual-machine-graphic? ;Boolean
|
||
(default #f))
|
||
(memory-size virtual-machine-memory-size ;integer (MiB)
|
||
(default 256))
|
||
(disk-image-size virtual-machine-disk-image-size ;integer (bytes)
|
||
(default 'guess))
|
||
(port-forwardings virtual-machine-port-forwardings ;list of integer pairs
|
||
(default '())))
|
||
|
||
(define-syntax virtual-machine
|
||
(syntax-rules ()
|
||
"Declare a virtual machine running the specified OS, with the given
|
||
options."
|
||
((_ os) ;shortcut
|
||
(%virtual-machine (operating-system os)))
|
||
((_ fields ...)
|
||
(%virtual-machine fields ...))))
|
||
|
||
(define (port-forwardings->qemu-options forwardings)
|
||
"Return the QEMU option for the given port FORWARDINGS as a string, where
|
||
FORWARDINGS is a list of host-port/guest-port pairs."
|
||
(string-join
|
||
(map (match-lambda
|
||
((host-port . guest-port)
|
||
(string-append "hostfwd=tcp::"
|
||
(number->string host-port)
|
||
"-:" (number->string guest-port))))
|
||
forwardings)
|
||
","))
|
||
|
||
(define-gexp-compiler (virtual-machine-compiler (vm <virtual-machine>)
|
||
system target)
|
||
(match vm
|
||
(($ <virtual-machine> os qemu graphic? memory-size disk-image-size ())
|
||
(system-qemu-image/shared-store-script os
|
||
#:system system
|
||
#:target target
|
||
#:qemu qemu
|
||
#:graphic? graphic?
|
||
#:memory-size memory-size
|
||
#:disk-image-size
|
||
disk-image-size))
|
||
(($ <virtual-machine> os qemu graphic? memory-size disk-image-size
|
||
forwardings)
|
||
(let ((options
|
||
`("-nic" ,(string-append
|
||
"user,model=virtio-net-pci,"
|
||
(port-forwardings->qemu-options forwardings)))))
|
||
(system-qemu-image/shared-store-script os
|
||
#:system system
|
||
#:target target
|
||
#:qemu qemu
|
||
#:graphic? graphic?
|
||
#:memory-size memory-size
|
||
#:disk-image-size
|
||
disk-image-size
|
||
#:options options)))))
|
||
|
||
;;; vm.scm ends here
|