OpenNebula

Hi,

I've made small patch to check is when im/monitor_ds.sh is walking the datastores is it working on directory.

It is not critical. but I managed to create such situation so it is nice to have verification that we are working on directory.

https://github.com/OpenNebula/one/pull/100

     dir=$DATASTORE_LOCATION/$ds

+    test -d "$dir" || continue
+
     USED_MB=$(df -B1M -P $dir 2>/dev/null | tail -n 1 | awk '{print $3}')

Kind Regards,
Anton Todorov

ps. Just reviewed the text and I think there should be quotes on `dir` assignment like dir="$DATASTORE_LOCATION/$ds"