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vm: Make the image format a parameter.

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* guix/build/vm.scm (load-in-linux-vm): Add #:disk-image-format
  parameter; add 'image-file' variable.  Honor DISK-IMAGE-FORMAT.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add
  #:disk-image-format parameter, and honor it.
  (qemu-image): Likewise.
This commit is contained in:
Ludovic Courtès 2014-05-22 22:30:13 +02:00
parent 3035b50f28
commit c4a74364b9
2 changed files with 19 additions and 9 deletions
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18
gnu/system/vm.scm
View file

@ -119,6 +119,7 @@ (define* (expression->derivation-in-linux-vm name exp
(make-disk-image? #f)
(references-graphs #f)
(memory-size 256)
(disk-image-format "qcow2")
(disk-image-size
(* 100 (expt 2 20))))
"Evaluate EXP in a QEMU virtual machine running LINUX with INITRD (a
@ -127,8 +128,9 @@ (define* (expression->derivation-in-linux-vm name exp
copied to the derivation's output when the VM terminates. The virtual machine
runs with MEMORY-SIZE MiB of memory.
When MAKE-DISK-IMAGE? is true, then create a QEMU disk image of
DISK-IMAGE-SIZE bytes and return it.
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.
MODULES is the set of modules imported in the execution environment of EXP.
@ -174,6 +176,7 @@ (define builder
#:linux linux #:initrd initrd
#:memory-size #$memory-size
#:make-disk-image? #$make-disk-image?
#:disk-image-format #$disk-image-format
#:disk-image-size #$disk-image-size
#:references-graphs graphs))))
@ -190,15 +193,17 @@ (define* (qemu-image #:key
(system (%current-system))
(qemu qemu-headless)
(disk-image-size (* 100 (expt 2 20)))
(disk-image-format "qcow2")
(file-system-type "ext4")
grub-configuration
(register-closures? #t)
(inputs '())
copy-inputs?)
"Return a bootable, stand-alone QEMU image, with a root partition of type
FILE-SYSTEM-TYPE. The returned image is a full disk image, with a GRUB
installation that uses GRUB-CONFIGURATION as its configuration
file (GRUB-CONFIGURATION must be the name of a file in the VM.)
"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. The
returned image is a full disk image, 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,
@ -242,6 +247,7 @@ (define* (qemu-image #:key
#:system system
#:make-disk-image? #t
#:disk-image-size disk-image-size
#:disk-image-format disk-image-format
#:references-graphs graph)))

10
guix/build/vm.scm
View file

@ -50,6 +50,7 @@ (define* (load-in-linux-vm builder
(qemu (qemu-command)) (memory-size 512)
linux initrd
make-disk-image? (disk-image-size 100)
(disk-image-format "qcow2")
(references-graphs '()))
"Run BUILDER, a Scheme file, into a VM running LINUX with INITRD, and copy
the result to OUTPUT.
@ -60,9 +61,12 @@ (define* (load-in-linux-vm builder
REFERENCES-GRAPHS can specify a list of reference-graph files as produced by
the #:references-graphs parameter of 'derivation'."
(define image-file
(string-append "image." disk-image-format))
(when make-disk-image?
(unless (zero? (system* "qemu-img" "create" "-f" "qcow2" "image.qcow2"
(unless (zero? (system* "qemu-img" "create" "-f" disk-image-format
image-file
(number->string disk-image-size)))
(error "qemu-img failed")))
@ -92,12 +96,12 @@ (define* (load-in-linux-vm builder
"-append" (string-append "console=ttyS0 --load="
builder)
(if make-disk-image?
'("-hda" "image.qcow2")
`("-hda" ,image-file)
'())))
(error "qemu failed" qemu))
(if make-disk-image?
(copy-file "image.qcow2" output)
(copy-file image-file output)
(begin
(mkdir output)
(copy-recursively "xchg" output))))