Explain why helper uses -f (force) in resize2fs

diff --git a/snf-image-helper/tasks/20FilesystemResizeUnmounted.in b/snf-image-helper/tasks/20FilesystemResizeUnmounted.in
index b611815..fb460b9 100644 (file)
--- a/snf-image-helper/tasks/20FilesystemResizeUnmounted.in
+++ b/snf-image-helper/tasks/20FilesystemResizeUnmounted.in
@@ -44,6 +44,10 @@ if [[ "$ptype" == ext[234] ]]; then
     state=$($TUNE2FS -l "$device" | grep ^Filesystem\ state: | cut -d: -f2);
     state=$(echo $state) #trim the value
 
+    # We force a filesystem resize here if the file system is clean, even if
+    # resize2fs complains. By default resize2fs will refuse to resize a file
+    # system that has been mounted after the last fs check, but since we are
+    # sure the file system is clean it's safe enough to bypass this.
     if [ "$state" = "clean" ]; then
         $RESIZE2FS -f "$device"
     else