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-rw-r--r--gnu/tests/install.scm11
1 files changed, 9 insertions, 2 deletions
diff --git a/gnu/tests/install.scm b/gnu/tests/install.scm
index ecf1ac1923..4779b80e94 100644
--- a/gnu/tests/install.scm
+++ b/gnu/tests/install.scm
@@ -199,8 +199,15 @@ IMAGE, a disk image. The QEMU VM is has access to MEMORY-SIZE MiB of RAM."
(mlet %store-monad ((system (current-system)))
(return #~(let ((image #$image))
;; First we need a writable copy of the image.
- (format #t "copying image '~a'...~%" image)
- (copy-file image "disk.img")
+ (format #t "creating writable image from '~a'...~%" image)
+ (unless (zero? (system* #+(file-append qemu-minimal
+ "/bin/qemu-img")
+ "create" "-f" "qcow2"
+ "-o"
+ (string-append "backing_file=" image)
+ "disk.img"))
+ (error "failed to create writable QEMU image" image))
+
(chmod "disk.img" #o644)
`(,(string-append #$qemu-minimal "/bin/"
#$(qemu-command system))