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-rw-r--r--lib/test-driver/test-driver.pl9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/test-driver/test-driver.pl b/lib/test-driver/test-driver.pl
index 6bac1f1dd39..2ccc6bd4b9a 100644
--- a/lib/test-driver/test-driver.pl
+++ b/lib/test-driver/test-driver.pl
@@ -52,6 +52,15 @@ sub runTests {
 }
 
 
+# Create an empty qcow2 virtual disk with the given name and size (in
+# MiB).
+sub createDisk {
+    my ($name, $size) = @_;
+    system("qemu-img create -f qcow2 $name ${size}M") == 0
+        or die "cannot create image of size $size";
+}
+
+
 END {
     foreach my $vm (values %vms) {
         if ($vm->{pid}) {