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Sage Weil - Ceph Distributed Storage - UUASC-LA Oct. 2011

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Published on Mar 7, 2013

Sage Weil discusses the Ceph distributed storage system at the October 2011 meeting of the UNIX Users Association (UUASC) hosted at Media Temple in Culver City California.

Sage's abstract is below.

Since the presentation Inktank www.inktank.com was cofounded by Sage to handle professional services support of Ceph.

More inforamation on UUASC can be found at http://uuasc.org .


Abstract

As the size and performance requirements of storage systems have
increased, file system designers have looked to new architectures to
facilitate system scalability. Ceph is a fully open source distributed
object store, network block device, and file system designed for
reliability, performance, and scalability from terabytes to exabytes.

Ceph's architecture consists of two main components: an object storage
layer, and a distributed file system that is constructed on top of this
object store. The object store provides a generic, scalable storage
platform with support for snapshots and distributed computation. This
storage backend is used to provide a simple network block device (RBD)
with thin provisioning and snapshots, or an S3 or Swift compatible RESTful
object storage interface. It also forms the basis for a distributed file
system, managed by a distributed metadata server cluster, which similarly
provides advanced features like per-directory granularity snapshots, and a
recursive accounting feature that provides a convenient view of how much
data is stored beneath any directory in the system.

This talk will describe the Ceph architecture and then focus on the
current status and future of the project. This will include a discussion
of Ceph's relationship with btrfs, the file system and RBD clients in the
Linux kernel, RBD support for virtual block devices in Qemu/KVM and
libvirt, and current engineering challenges.

Sage Weil designed Ceph as part of his PhD research in Storage Systems at
the University of California, Santa Cruz. Since graduating, he has
continued to refine the system with the goal of providing a stable next
generation distributed file system for Linux.

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