Renaming directories takes a long time

Question

I renamed a directory on a file system linked to an Amazon S3 bucket and have automatic export enabled. Why are the files inside this directory taking a long time to get renamed on the S3 bucket?

Answer

When you rename a directory on the file system, FSx for Lustre creates new S3 objects for all of the files and directories inside the directory that was renamed. The amount of time it takes to propagate the directory rename to S3 is directly correlated to the quantity of files and directories that are descendants of the directory being renamed.