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-rw-r--r--gnu/system/vm.scm49
1 files changed, 34 insertions, 15 deletions
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index c687bb43f5..efe943a7b4 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -376,20 +376,31 @@ environment with the store shared with the host."
(define* (system-qemu-image/shared-store
os
- #:key (disk-image-size (* 15 (expt 2 20))))
+ #:key
+ full-boot?
+ (disk-image-size (* (if full-boot? 500 15) (expt 2 20))))
"Return a derivation that builds a QEMU image of OS that shares its store
-with the host."
- (mlet* %store-monad
- ((os-drv (operating-system-derivation os))
- (grub.cfg (operating-system-grub.cfg os)))
+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."
+ (mlet* %store-monad ((os-drv (operating-system-derivation os))
+ (grub.cfg (operating-system-grub.cfg os)))
+ ;; XXX: When FULL-BOOT? is true, we end up creating an image that contains
+ ;; GRUB.CFG and all its dependencies, including the output of OS-DRV.
+ ;; 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-derivation os-drv
#:grub-configuration grub.cfg
#:disk-image-size disk-image-size
- #:inputs `(("system" ,os-drv))
+ #:inputs (if full-boot?
+ `(("grub.cfg" ,grub.cfg))
+ '())
;; XXX: Passing #t here is too slow, so let it off by default.
#:register-closures? #f
- #:copy-inputs? #f)))
+ #:copy-inputs? full-boot?)))
(define* (common-qemu-options image)
"Return the a string-value gexp with the common QEMU options to boot IMAGE."
@@ -406,15 +417,23 @@ with the host."
#:key
(qemu qemu)
(graphic? #t)
- full-boot?)
+ full-boot?
+ (disk-image-size
+ (* (if full-boot? 500 15)
+ (expt 2 20))))
"Return a derivation that builds a script to run a virtual machine image of
-OS that shares its store with the host. When FULL-BOOT? is true, the returned
-script runs everything starting from the bootloader; otherwise it directly
-starts the operating system kernel."
- (mlet* %store-monad
- ((os -> (virtualized-operating-system os))
- (os-drv (operating-system-derivation os))
- (image (system-qemu-image/shared-store os)))
+OS that shares its store with the host.
+
+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))
+ (os-drv (operating-system-derivation os))
+ (image (system-qemu-image/shared-store
+ os
+ #:full-boot? full-boot?
+ #:disk-image-size disk-image-size)))
(define builder
#~(call-with-output-file #$output
(lambda (port)