A Caching Fan-Out File System

Often large amounts of data is stored on a slow medium (e.g., a file server across a network link), but users have faster storage available (e.g., a local SCSI disk or ram drive). Cachefs is a fan-out file system with two branches. The first branch, or the source branch, is the slower, but larger branch that is authoritative. The second branch, or the cache branch, is the faster branch that contains a local copy of the data, but is not authoritative. We will investigate what types of performance gains can be made, how to efficiently store and index many files in the cache, and how to efficiently select victims once the cache branch is full.

Technical Reports:

#	Title (click for html version)	Formats	Published In	Date	Comments
1	A Versatile Persistent Caching Framework for File Systems	PS PDF BibTeX	Stony Brook U. CS TechReport FSL-05-05	Dec 2005

Past Students:

#	Name (click for home page)	Program	Period	Current Location
1	Gopalan Sivathanu	PhD	Sep 2003 - May 2008	Software Engineer, Systems Infrastructure group, Google (Mountain View, CA)
2	Yamini Allu	MS	Jan 2008 - Dec 2008	Member of Technical Staff, Data Domain, Inc. Santa Clara, CA)
3	Rachita Kothiyal	MS	Sep 2007 - May 2009	Member of Technical Staff, Network Appliance, Inc. (Sunnyvale, CA)

Sponsors:

#	Sponsor	Amount	Period	Type	Title (click for award abstract)
1	NSF Trusted Computing (TC)	$400,000	2003-2006	Sole PI	A Layered Approach to Securing Network File Systems