PARDA: Proportional Allocation of Resources for Distributed Storage Access
USENIX Conference on File and Storage Technologies (FAST), February 2009
PARDA: Proportional Allocation of Resources for Distributed Storage Access
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Abstract
Rapid adoption of virtualization technologies has led to increased utilization of physical resources, which are multiplexed among numerous workloads with varying demands and importance. Virtualization has also accelerated the deployment of shared storage systems, which offer many advantages in such environments. Effective resource management for shared storage systems is challenging, even in research systems with complete end-to-end control over all system components. Commercially-available storage arrays typically offer only limited, proprietary support for controlling service rates, which is insufficient for isolating workloads sharing the same storage volume or LUN. To address these issues, we introduce PARDA, a novel software system that enforces proportional-share fairness among distributed hosts accessing a storage array, without assuming any support from the array itself.
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