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authorLudovic Courtès <ludo@gnu.org>2014-05-22 22:30:13 +0200
committerLudovic Courtès <ludo@gnu.org>2014-05-22 23:24:13 +0200
commitc4a74364b9ddb5c34bce788d453f93aa307731dd (patch)
treec9fc06ad5f46ce90184ec3018ec727da24f1ded1
parent3035b50f28c1bcbc0a2bb09457a69ea9c06d69e0 (diff)
vm: Make the image format a parameter.
* 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.
-rw-r--r--gnu/system/vm.scm18
-rw-r--r--guix/build/vm.scm10
2 files changed, 19 insertions, 9 deletions
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index 0d41791d87..39ce5bb6ef 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -119,6 +119,7 @@ input tuple. The output file name is when building for SYSTEM."
(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 @@ 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.
-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 @@ made available under the /xchg CIFS share."
#: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 @@ made available under the /xchg CIFS share."
(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 @@ the image."
#:system system
#:make-disk-image? #t
#:disk-image-size disk-image-size
+ #:disk-image-format disk-image-format
#:references-graphs graph)))
diff --git a/guix/build/vm.scm b/guix/build/vm.scm
index 2a8843c633..4de536abb4 100644
--- a/guix/build/vm.scm
+++ b/guix/build/vm.scm
@@ -50,6 +50,7 @@
(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 @@ it via /dev/hda.
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 @@ the #:references-graphs parameter of 'derivation'."
"-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))))