Scalable Storage System Simulation
Students: Adam Crume, Esteban Molina-Estolano
Collaborators: Matthew Curry (SNL), Thomas Kroeger (SNL), Lee Ward (SNL), Rob Ross (ANL), Christopher Carothers (RPI), John Bent (LANL), Gary Grider (LANL), James Nunez (LANL), Scott Brandt (UCSC), Kleoni Ioannidou (UCSC)
Funding: DOE, PDSI, ISSDM, GAANN
This project, a LANL/UCSC collaboration, has already created strong interest at labs and universities: the goal is to create a simulator for parallel file systems. Such a simulator will
- enable file system designers and researchers to try out innovative data placement strategies and other novel subsystems at scale,
- facilitate file system deployment by providing a low-cost platform for “what-if” workload and file system tuning scenarios,
- empower scientist to quickly tune existing file systems for specific workloads,
- aid instructors by providing a platform for class room experiments.
In the first phase we started with building the simulator based on a very simple model of parallel file systems and a set of placement strategies from commonly used systems (so far: PVFS, PanFS, and Ceph). We are in the process of validating the simulator by replaying traces collected by the PDSI, LLNL, and at industry. The validation involves a careful and disciplined process of adding and removing features to the simulator's file system model to arrive at the minimal set of features necessary to reproduce real system's behavior.