Permanently disable Spotlight on disk that is used with rsync
Things to try...


Set the .metadata_never_index file to stationery or locked
Put the entire backup structure inside a folder called myBackup.noindex
Add it to the Privacy pane in Spotlight settings. [I don't know where that data is stored - if it's on the boot drive, then it will work, if it's on the relevant external drive, back to 1 &amp; 2]