Question on snapshots -- 1. For backup purposes, what specifically should be backed up after running the snapshot? Is it just the subdirectory inside the snapshot directory, or should we also backup the meta subdirectory? 2. When restoring, I assume the meta and state directories from the snapshot are put into the data directory? 3. After taking a snapshot and creating the backup, is it safe to delete the state subdirectory in the snapshot, or should all of the subdirectories be deleted?