On 2009/10/21 14:13, MORITA Kazutaka 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 snapshot,
cloning, and thin
On 2009/10/25 17:51, Dietmar Maurer wrote:
Do you support multiple guests accessing the same image?
A VM image can be attached to any VMs but one VM at a time; multiple
running VMs cannot access to the same VM image.
I guess this is a problem when you want to do live migrations?
Yes,
Also, on _loaded_ systems, I noticed creating/removing logical volumes
can take really long (several minutes); where allocating a file of a
given size would just take a fraction of that.
Allocating a file takes much longer, unless you use a 'sparse' file.
- Dietmar
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Do you support multiple guests accessing the same image?
A VM image can be attached to any VMs but one VM at a time; multiple
running VMs cannot access to the same VM image.
I guess this is a problem when you want to do live migrations?
- Dietmar
Dietmar Maurer wrote:
Also, on _loaded_ systems, I noticed creating/removing logical volumes
can take really long (several minutes); where allocating a file of a
given size would just take a fraction of that.
Allocating a file takes much longer, unless you use a 'sparse' file.
If you mean
On 10/23/2009 05:40 PM, FUJITA Tomonori wrote:
On Fri, 23 Oct 2009 09:14:29 -0500
Javier Guerrajav...@guerrag.com wrote:
I think that the major difference between sheepdog and cluster file
systems such as Google File system, pNFS, etc is the interface between
clients and a storage system.
-de...@nongnu.org, linux-fsde...@vger.kernel.org
Sent: Wednesday, October 21, 2009 8:13:47 AM
Subject: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM
Hi everyone,
Sheepdog is a distributed storage system for KVM/QEMU. It provides
highly available block level storage volumes to VMs
?
-Original Message-
From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On
Behalf Of MORITA Kazutaka
Sent: Mittwoch, 21. Oktober 2009 07:14
To: kvm@vger.kernel.org; qemu-de...@nongnu.org; linux-
fsde...@vger.kernel.org
Subject: [ANNOUNCE] Sheepdog: Distributed Storage System
MORITA Kazutaka morita.kazut...@lab.ntt.co.jp writes:
We use JGroups (Java library) for reliable multicast communication in
our cluster manager daemon. We don't worry about the performance much
since the cluster manager daemon is not involved in the I/O path. We
might think about moving to
Chris Webb ch...@arachsys.com writes:
MORITA Kazutaka morita.kazut...@lab.ntt.co.jp writes:
We use JGroups (Java library) for reliable multicast communication in
our cluster manager daemon. We don't worry about the performance much
since the cluster manager daemon is not involved in the
On Fri, Oct 23, 2009 at 12:30 AM, Avi Kivity a...@redhat.com wrote:
On 10/21/2009 07:13 AM, MORITA Kazutaka 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
We use JGroups (Java library) for reliable multicast communication in
our cluster manager daemon.
I doubt that there is something like 'reliable multicast' - you will run into
many problems when you try to handle errors.
We don't worry about the performance much
since the cluster manager
Another suggestion: use LVM instead of btrfs (to get better performance)
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Anyways, I do not know JGroups - maybe that 'reliable multicast' solves
all network problems somehow - Is there any documentation about how
they do it?
OK, found the papers on their web site - quite interesting too.
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On Fri, Oct 23, 2009 at 5:41 AM, MORITA Kazutaka
morita.kazut...@lab.ntt.co.jp wrote:
On Fri, Oct 23, 2009 at 12:30 AM, Avi Kivity a...@redhat.com wrote:
If so, is it reasonable to compare this to a cluster file system setup (like
GFS) with images as files on this filesystem? The difference
Javier Guerra jav...@guerrag.com writes:
i'd just want to add my '+1 votes' on both getting rid of JVM
dependency and using block devices (usually LVM) instead of ext3/btrfs
If the chunks into which the virtual drives are split are quite small (say
the 64MB used by Hadoop), LVM may be a less
On Fri, Oct 23, 2009 at 9:58 AM, Chris Webb ch...@arachsys.com wrote:
If the chunks into which the virtual drives are split are quite small (say
the 64MB used by Hadoop), LVM may be a less appropriate choice. It doesn't
support very large numbers of very small logical volumes very well.
Sorry, I am not familiar with the details of Exanodes/Seanodes but it seems to
be a storage system provides iSCSI protocol. As I wrote in a different
mail, Sheepdog is a storage system that provide a simple key-value
interface to Sheepdog client (qemu block driver).
On Fri, Oct 23, 2009 at 3:53
On Fri, 23 Oct 2009 09:14:29 -0500
Javier Guerra jav...@guerrag.com wrote:
I think that the major difference between sheepdog and cluster file
systems such as Google File system, pNFS, etc is the interface between
clients and a storage system.
note that GFS is Global File System (written
On Fri, Oct 23, 2009 at 8:10 PM, Alexander Graf ag...@suse.de wrote:
On 23.10.2009, at 12:41, MORITA Kazutaka wrote:
On Fri, Oct 23, 2009 at 12:30 AM, Avi Kivity a...@redhat.com wrote:
How is load balancing implemented? Can you move an image transparently
while a guest is running? Will
Chris Webb wrote:
Javier Guerra jav...@guerrag.com writes:
i'd just want to add my '+1 votes' on both getting rid of JVM
dependency and using block devices (usually LVM) instead of ext3/btrfs
If the chunks into which the virtual drives are split are quite small (say
the 64MB used by Hadoop),
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
On Fri, Oct 23, 2009 at 2:39 PM, MORITA Kazutaka
morita.kazut...@lab.ntt.co.jp wrote:
Thanks for many comments.
Sheepdog git trees are created.
great!
is there any client (no matter how crude) besides the patched
KVM/Qemu? it would make it far easier to hack around...
--
Javier
--
To
On Sat, Oct 24, 2009 at 4:45 AM, Javier Guerra jav...@guerrag.com wrote:
On Fri, Oct 23, 2009 at 2:39 PM, MORITA Kazutaka
morita.kazut...@lab.ntt.co.jp wrote:
Thanks for many comments.
Sheepdog git trees are created.
great!
is there any client (no matter how crude) besides the patched
On 10/21/2009 07:13 AM, MORITA Kazutaka 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 snapshot,
cloning, and thin
Avi Kivity wrote:
On 10/21/2009 07:13 AM, MORITA Kazutaka 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 snapshot,
cloning,
Am 22.10.2009 um 18:28 schrieb Anthony Liguori anth...@codemonkey.ws:
Avi Kivity wrote:
On 10/21/2009 07:13 AM, MORITA Kazutaka 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.
. Patching and compiling qemu-kvm went
flawless.
- Original Message -
From: MORITA Kazutaka morita.kazut...@lab.ntt.co.jp
To: kvm@vger.kernel.org, qemu-de...@nongnu.org, linux-fsde...@vger.kernel.org
Sent: Wednesday, October 21, 2009 8:13:47 AM
Subject: [ANNOUNCE] Sheepdog: Distributed Storage
[mailto:kvm-ow...@vger.kernel.org] On
Behalf Of MORITA Kazutaka
Sent: Mittwoch, 21. Oktober 2009 07:14
To: kvm@vger.kernel.org; qemu-de...@nongnu.org; linux-
fsde...@vger.kernel.org
Subject: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM
Hi everyone,
Sheepdog is a distributed
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 snapshot,
cloning, and thin provisioning. Sheepdog runs on several tens or hundreds
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