use --apparent-size when invoking du to check size of JDK tarball

The bug report references problems on OpenVZ.  Adding --apparent-size
should be safe for general use.  Closes: #794401

diff --git a/lib/common.sh b/lib/common.sh
index 1e5c30b7d0328097c080a508f2bd121a35b42321..73d729f0e4a14d7d0e103754e8ec8fd867618d19 100644 (file)
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -18,7 +18,7 @@ read_yn() {
 # diskusage <path>: prints size in MB
 diskusage() {
     local path="$1"
-    read size dummy < <( du -sm "$path" )
+    read size dummy < <( du -sm --apparent-size "$path" )
     echo "$size"
 }