diff options
Diffstat (limited to 'gnu/system/vm.scm')
| -rw-r--r-- | gnu/system/vm.scm | 87 |
1 files changed, 78 insertions, 9 deletions
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm index 66a2448ceb..90d29b0783 100644 --- a/gnu/system/vm.scm +++ b/gnu/system/vm.scm @@ -39,7 +39,7 @@ #:use-module (gnu packages gawk) #:use-module (gnu packages bash) #:use-module (gnu packages less) - #:use-module (gnu packages qemu) + #:use-module (gnu packages virtualization) #:use-module (gnu packages disk) #:use-module (gnu packages zile) #:use-module (gnu packages linux) @@ -68,7 +68,10 @@ system-qemu-image/shared-store system-qemu-image/shared-store-script - system-disk-image)) + system-disk-image + + virtual-machine + virtual-machine?)) ;;; Commentary: @@ -105,16 +108,19 @@ (guile-for-build (%guile-for-build)) + (single-file-output? #f) (make-disk-image? #f) (references-graphs #f) (memory-size 256) (disk-image-format "qcow2") (disk-image-size 'guess)) "Evaluate EXP in a QEMU virtual machine running LINUX with INITRD (a -derivation). In the virtual machine, EXP has access to all its inputs from the -store; it should put its output files in the `/xchg' directory, which is -copied to the derivation's output when the VM terminates. The virtual machine -runs with MEMORY-SIZE MiB of memory. +derivation). The virtual machine runs with MEMORY-SIZE MiB of memory. In the +virtual machine, EXP has access to all its inputs from the store; it should +put its output file(s) in the '/xchg' directory. + +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 @@ -164,6 +170,7 @@ made available under the /xchg CIFS share." #:linux linux #:initrd initrd #: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))))) @@ -219,6 +226,7 @@ INPUTS is a list of inputs (as for packages)." (reboot)))) #:system system #:make-disk-image? #f + #:single-file-output? #t #:references-graphs inputs)) (define* (qemu-image #:key @@ -345,7 +353,7 @@ to USB sticks meant to be read-only." ;; Volume name of the root file system. Since we don't know which device ;; will hold it, we use the volume name to find it (using the UUID would ;; be even better, but somewhat less convenient.) - (normalize-label "GuixSD")) + (normalize-label "GuixSD_image")) (define file-systems-to-keep (remove (lambda (fs) @@ -576,7 +584,8 @@ with '-virtfs' options for the host file systems listed in SHARED-FS." full-boot? (disk-image-size (* (if full-boot? 500 70) - (expt 2 20)))) + (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. @@ -609,7 +618,8 @@ it is mostly useful when FULL-BOOT? is true." #$@(common-qemu-options image (map file-system-mapping-source (cons %store-mapping mappings))) - "-m " (number->string #$memory-size))) + "-m " (number->string #$memory-size) + #$@options)) (define builder #~(call-with-output-file #$output @@ -621,4 +631,63 @@ it is mostly useful when FULL-BOOT? is true." (gexp->derivation "run-vm.sh" builder))) + +;;; +;;; High-level abstraction. +;;; + +(define-record-type* <virtual-machine> %virtual-machine + make-virtual-machine + virtual-machine? + (operating-system virtual-machine-operating-system) ;<operating-system> + (qemu virtual-machine-qemu ;<package> + (default qemu)) + (graphic? virtual-machine-graphic? ;Boolean + (default #f)) + (memory-size virtual-machine-memory-size ;integer (MiB) + (default 256)) + (port-forwardings virtual-machine-port-forwardings ;list of integer pairs + (default '()))) + +(define-syntax virtual-machine + (syntax-rules () + "Declare a virtual machine running the specified OS, with the given +options." + ((_ os) ;shortcut + (%virtual-machine (operating-system os))) + ((_ fields ...) + (%virtual-machine fields ...)))) + +(define (port-forwardings->qemu-options forwardings) + "Return the QEMU option for the given port FORWARDINGS as a string, where +FORWARDINGS is a list of host-port/guest-port pairs." + (string-join + (map (match-lambda + ((host-port . guest-port) + (string-append "hostfwd=tcp::" + (number->string host-port) + "-:" (number->string guest-port)))) + forwardings) + ",")) + +(define-gexp-compiler (virtual-machine-compiler (vm <virtual-machine>) + system target) + ;; XXX: SYSTEM and TARGET are ignored. + (match vm + (($ <virtual-machine> os qemu graphic? memory-size ()) + (system-qemu-image/shared-store-script os + #:qemu qemu + #:graphic? graphic? + #:memory-size memory-size)) + (($ <virtual-machine> os qemu graphic? memory-size forwardings) + (let ((options + `("-net" ,(string-append + "user," + (port-forwardings->qemu-options forwardings))))) + (system-qemu-image/shared-store-script os + #:qemu qemu + #:graphic? graphic? + #:memory-size memory-size + #:options options))))) + ;;; vm.scm ends here |