Check that base path exists

1 files changed, 9 insertions, 1 deletions

diff --git a/create-vm b/create-vm
index d5ec376..ecbd8e7 100755
--- a/create-vm
+++ b/create-vm
@@ -11,6 +11,14 @@ base="$2"
 # Where are the base images?
 imagedir="/big/base-images"
 
+# Does the base image exist?
+basepath="$imagedir/base-$base.img.xz"
+if [ ! -e "$basepath" ]
+then
+    echo "$basepath does not exist" 1>&2
+    exit 1
+fi
+
 # How large are the (uncompressed) images?
 size="4G"
 
@@ -22,7 +30,7 @@ sudo lvcreate --name "$name" --size "$size" "$vg"
 lvpath="/dev/$vg/$name"
 
 # Copy uncompressed image to LV.
-unxz < "$imagedir/base-$base.img.xz" |
+unxz < "$basepath" |
     pv --size "$size" |
     sudo ionice -c3 tee "$lvpath" > /dev/null