Accession Number:

ADA522478

Title:

A Transparently-Scalable Metadata Service for the Ursa Minor Storage System

Descriptive Note:

Conference paper

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA

Personal Author(s):

• Sinnamohideen, Shafeeq
• Sambasivan, Raja R.
• Hendricks, James
• Li, Likun
• Ganger, Gregory R.

Report Date:

2010-06-25

Pagination or Media Count:

15.0

Abstract:

The metadata service of the Ursa Minor distributed storage system scales metadata throughput as metadata servers are added. While doing so, it correctly handles operations that involve metadata served by different servers, consistently and atomically updating such metadata. Unlike previous systems, Ursa Minor does so by reusing existing metadata migration functionality to avoid complex distributed transaction protocols. It also assigns object IDs to minimize the occurrence of multiserver operations. This approach allows Ursa Minor to implement a desired feature with less complexity than alternative methods and with minimal performance penalty under 1 in non-pathological cases.

Descriptors:

• *DATA STORAGE SYSTEMS
• *METADATA
• CLIENT SERVER SYSTEMS
• THROUGHPUT
• SYMPOSIA

Subject Categories:

• Computer Hardware
• Information Science

Distribution Statement:

APPROVED FOR PUBLIC RELEASE