Duke CPS 212 - Petal and Frangipani (5 pages)

Previewing pages 1, 2 of 5 page document View the full content.
View Full Document

Petal and Frangipani



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Petal and Frangipani

80 views

Other


Pages:
5
School:
Duke University
Course:
Cps 212 - Distributed Information Systems

Unformatted text preview:

Petal Frangipani NFS NAS Petal and Frangipani Frangipani SAN Petal Petal Frangipani Untrusted OS agnostic Remaining Slides The following slides have been borrowed from the Petal and Frangipani presentations which were available on the Web until Compaq SRC dissolved This material is owned by Ed Lee Chandu Thekkath and the other authors of the work The Frangipani material is still available through Chandu Thekkath s site at www thekkath org NFS FS semantics Sharing coordination For CPS 212 several issues are important Understand the role of each layer in the previous slides and the Frangipani Disk aggregation bricks Filesystem agnostic Recovery and reconfiguration Load balancing Chained declustering Snapshots Does not control sharing strengths and limitations of each layer as a basis for innovating behind its interface NAS SAN Understand the concepts of virtual disks and a cluster file system embodied in Petal and Frangipani Understand the similarities differences between Petal and the other reconfigurable cluster service work we have studied DDS and Porcupine Understand how the features of Petal simplify the design of a scalable cluster file system Frangipani above it Understand the nature purpose and role of the three key design elements added for Frangipani leased locks a write ownership consistent caching protocol and server logging for recovery Petal Each cloud may resize or reconfigure independently What indirection is required to make this happen and where is it Logical System View Petal Distributed Virtual Disks AdvFS NT FS PC FS UFS Systems Research Center Scalable Network Digital Equipment Corporation Petal Edward K Lee dev vdisk1 Chandramohan A Thekkath dev vdisk2 5 dev vdisk3 dev vdisk5 dev vdisk4 6 10 24 2002 1 Physical System View Virtual Disks Each disk provides 2 64 byte address space Created and destroyed on demand Parallel Database or Cluster File System Allocates disk storage on demand Snapshots via copy on write Online incremental reconfiguration



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Petal and Frangipani and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Petal and Frangipani and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?