When inserting a file using GridFS, the chunks are inserted as an array with no regard for the max bson size.

https://github.com/mongodb/mongo-ruby-driver/blob/master/lib/mongo/grid/fs.rb#L78

Original bug report: https://groups.google.com/forum/#!msg/mongodb-user/EbRYGlJGFhM/Xoy1eUGwLA0J