test: Re-try with loopback if a backing device is too small.

diff --git a/test/lib/aux.sh b/test/lib/aux.sh
index 84edb7d79873d2df13658a5af26fcf226bfb11af..32268a6936de4de0c4e01e5b84e453973c665433 100644 (file)
--- a/test/lib/aux.sh
+++ b/test/lib/aux.sh
@@ -370,7 +370,13 @@ prepare_devs() {
                DEVICES[$count]=$dev
                count=$(( $count + 1 ))
                echo 0 $size linear "$BACKING_DEV" $((($i-1)*$size)) > "$name.table"
-               dmsetup create -u "TEST-$name" "$name" "$name.table"
+               if not dmsetup create -u "TEST-$name" "$name" "$name.table" &&
+                  test -n "$LVM_TEST_BACKING_DEVICE";
+               then # maybe the backing device is too small for this test
+                   LVM_TEST_BACKING_DEVICE=
+                   prepare_devs "$@"
+                   return $?
+               fi
        done
        finish_udev_transaction