debvm-run: if mmdebstrap failed, the image file might exist but have zero size -- test for that

1 files changed, 1 insertions, 0 deletions

diff --git a/debvm-run b/debvm-run
index ce27280..3ccbf14 100755
--- a/debvm-run
+++ b/debvm-run
@@ -44,6 +44,7 @@ while test "$#" -gt 0; do
 done
 
 test -f "$IMAGE" || die "image '$IMAGE' not found"
+test -s "$IMAGE" || die "image '$IMAGE' is empty"
 
 cleanup() {
 	set +x