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Identifier

000408074

Title

Design and implementation of SCSI Persistent Reservations over a shared distributed storage substrate

Alternative Title

Σχεδιασμός και υλοποίηση SCSI Persistent Reservations πάνω από ένα διαμοιραζόμενο κατανεμημένο υπόστρωμα αποθήκευσης

Author

Παπαγεωργίου, Σπυρίδων Ι.

Thesis advisor

Μπίλας, Άγγελος

Reviewer

Κατεβαίνης, Μανώλης
Πρατικάκης, Πολύβιος

Abstract

In this work we design Surfy, a SCSI driver that provides distributed SCSI-3 Persistent Reservations which is a critical feature for High Availability clusters. Our design provides a reliable and low communication overhead substrate over an existing Software Defined Storage system. We implement Surfy in the lower SCSI layer of the Linux kernel SCSI stack and provide a virtual SCSI block device abstraction. We demonstrate our work by running the industry-standard Windows Failover Cluster validation suite and quantify performance using the sg3_utils open-source software. Our results show that our implementation provides robust SCSI-3 Persistent Reservations at predictable overhead. In this thesis we provide detailed insight to the internals of SCSI Persistent Reservations and SCSI in general. Additionally, we provide exact traces and explain how Persistent Reservations are used by high-profile High Availability components, such as Windows Failover Cluster, VM ware vSphere and Red Hat's GFS-2.

Language

English

Subject

SCSI

Κατανεμημένα αποθηκευτικά μέσα

Issue date

2017-03-17

Collection

School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses

Type of Work--Post-graduate theses

Permanent Link

https://elocus.lib.uoc.gr//dlib/5/7/7/metadata-dlib-1491380573-90598-15922.tkl