Striping without sacrifices: maintaining POSIX semantics in a parallel file system
Jan Stender, Björn Kolbeck, Felix Hupfeld, Eugenio Cesario, Erich Focht, Matthias Hess, Jesús Malo, Jonathan Martí · 2008
Striping is a technique that distributes file content over multiple storage servers and thereby enables parallel ac-cess. In order to be able to provide a consistent view across file data and metadata operations, the file system has to track the layout of the file and know where the file ends and where it contains gaps. In this paper, we present a light-weight protocol for maintaining a consis-tent notion of a file’s layout that provides POSIX seman-tics without restricting concurrent access to the file. In an evaluation, we show that the protocol scales and elicit its corner cases. 1