From mboxrd@z Thu Jan  1 00:00:00 1970
From: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Subject: Re: [Qemu-devel] [ANNOUNCE] Sheepdog: Distributed Storage System for
	KVM
Date: Sat, 24 Oct 2009 04:39:26 +0900
Message-ID: <8fd1d76d0910231239g6cd3ad8tb29791680bbd6499@mail.gmail.com>
References: <4ADE988B.2070303@lab.ntt.co.jp>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: QUOTED-PRINTABLE
To: kvm@vger.kernel.org, qemu-devel@nongnu.org,
	linux-fsdevel@vger.kernel.org
Return-path: <kvm-owner@vger.kernel.org>
In-Reply-To: <4ADE988B.2070303@lab.ntt.co.jp>
Sender: kvm-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

Hi,

Thanks for many comments.

Sheepdog git trees are created.

  Sheepdog server
    git://sheepdog.git.sourceforge.net/gitroot/sheepdog/sheepdog

  Sheepdog client
    git://sheepdog.git.sourceforge.net/gitroot/sheepdog/qemu-kvm

Please try!

On Wed, Oct 21, 2009 at 2:13 PM, MORITA Kazutaka
<morita.kazutaka@lab.ntt.co.jp> wrote:
> Hi everyone,
>
> Sheepdog is a distributed storage system for KVM/QEMU. It provides
> highly available block level storage volumes to VMs like Amazon EBS.
> Sheepdog supports advanced volume management features such as snapsho=
t,
> cloning, and thin provisioning. Sheepdog runs on several tens or hund=
reds
> of nodes, and the architecture is fully symmetric; there is no centra=
l
> node such as a meta-data server.
>
> The following list describes the features of Sheepdog.
>
> =A0 =A0* Linear scalability in performance and capacity
> =A0 =A0* No single point of failure
> =A0 =A0* Redundant architecture (data is written to multiple nodes)
> =A0 =A0- Tolerance against network failure
> =A0 =A0* Zero configuration (newly added machines will join the clust=
er
> automatically)
> =A0 =A0- Autonomous load balancing
> =A0 =A0* Snapshot
> =A0 =A0- Online snapshot from qemu-monitor
> =A0 =A0* Clone from a snapshot volume
> =A0 =A0* Thin provisioning
> =A0 =A0- Amazon EBS API support (to use from a Eucalyptus instance)
>
> (* =3D current features, - =3D on our todo list)
>
> More details and download links are here:
>
> http://www.osrg.net/sheepdog/
>
> Note that the code is still in an early stage.
> There are some critical TODO items:
>
> =A0 =A0- VM image deletion support
> =A0 =A0- Support architectures other than X86_64
> =A0 =A0- Data recoverys
> =A0 =A0- Free space management
> =A0 =A0- Guarantee reliability and availability under heavy load
> =A0 =A0- Performance improvement
> =A0 =A0- Reclaim unused blocks
> =A0 =A0- More documentation
>
> We hope finding people interested in working together.
> Enjoy!
>
>
> Here are examples:
>
> - create images
>
> $ kvm-img create -f sheepdog "Alice's Disk" 256G
> $ kvm-img create -f sheepdog "Bob's Disk" 256G
>
> - list images
>
> $ shepherd info -t vdi
> =A0 40000 : Alice's Disk =A0256 GB (allocated: 0 MB, shared: 0 MB), 2=
009-10-15
> 16:17:18, tag: =A0 =A0 =A0 =A00, current
> =A0 80000 : Bob's Disk =A0 =A0256 GB (allocated: 0 MB, shared: 0 MB),=
 2009-10-15
> 16:29:20, tag: =A0 =A0 =A0 =A00, current
>
> - start up a virtual machine
>
> $ kvm --drive format=3Dsheepdog,file=3D"Alice's Disk"
>
> - create a snapshot
>
> $ kvm-img snapshot -c name sheepdog:"Alice's Disk"
>
> - clone from a snapshot
>
> $ kvm-img create -b sheepdog:"Alice's Disk":0 -f sheepdog "Charlie's =
Disk"
>
>
> Thanks.
>
> --
> MORITA, Kazutaka
>
> NTT Cyber Space Labs
> OSS Computing Project
> Kernel Group
> E-mail: morita.kazutaka@lab.ntt.co.jp
>
>
>
>



--=20
MORITA, Kazutaka

NTT Cyber Space Labs
OSS Computing Project
Kernel Group
E-mail: morita.kazutaka@lab.ntt.co.jp