Awesome. Thanks for the link. :)
Kevin
From: jonathan.pro...@gmail.com [jonathan.pro...@gmail.com] on behalf of
Jonathan Proulx [j...@jonproulx.com]
Sent: Thursday, May 28, 2015 12:59 PM
To: Fox, Kevin M
Cc: Dmitry Borodaenko; David Medberry;
On Thu, May 28, 2015 at 12:55 PM, Jonathan Proulx j...@jonproulx.com wrote:
On Thu, May 28, 2015 at 3:34 PM, Warren Wang war...@wangspeed.com wrote:
Even though we're using Ceph as a backend, we still use qcow2 images as our
golden images, since we still have a significant (maybe majority)
On Thu, May 28, 2015 at 3:21 PM, Fox, Kevin M kevin@pnnl.gov wrote:
I've experienced the opposite problem though. Downloading raw images and
uploading them to the cloud is very slow. Doing it through qcow2 allows them
to be compressed over the slow links. Ideally, the Ceph driver would
We use ceph for glance and cinder, and we have some nodes that lack sufficient
disk space, so they have libvirt_images_type=rbd
The majority of the Public images are raw format, which is pretty awesome
because those huge windows images (20 - 80 GB Raw) spawn in 14s.
When a user uploads a qcow2
Even though we're using Ceph as a backend, we still use qcow2 images as our
golden images, since we still have a significant (maybe majority) number of
users using true ephemeral disks. It would be nice if glance was clever
enough to convert where appropriate.
Warren
Warren
On Thu, May 28, 2015
It would be nice if glance was clever enough to convert where appropriate.
You're right, and it looks like that was added in the Kilo cycle:
https://review.openstack.org/#/c/159129/
-Chris
On Thu, May 28, 2015 at 3:34 PM, Warren Wang war...@wangspeed.com wrote:
Even though we're using Ceph
On Thu, May 28, 2015 at 3:34 PM, Warren Wang war...@wangspeed.com wrote:
Even though we're using Ceph as a backend, we still use qcow2 images as our
golden images, since we still have a significant (maybe majority) number of
users using true ephemeral disks. It would be nice if glance was
David is right, Ceph implements volume snapshotting at the RBD level,
not even RADOS level: whole 2 levels of abstraction above file system.
It doesn't matter if it's XFS, BtrFS, Ext4, or VFAT (if Ceph supported
VFAT): Ceph RBD takes care of it before individual chunks of an RBD
volume are passed
Hi
Now I try to use Fuel 6.1 deploy openstack Juno, use Ceph as cinder, nova
and glance backend.
In Fuel document suggest if use ceph, suggest use RAW format image.
but if I upload qcow2 image, seem working well.
what is the different use qcow2 and RAW in Ceph?
--
Shake Chen
I'm also curious about this. Here are some other pieces of information
relevant to the discussion. Maybe someone here can clear this up for me as
well. The documentation for Fuel 6.0, not sure what they changed for 6.1,
[1] states that when using Ceph one should disable qcow2 so that images are
This isn't remotely related to btrfs. It works fine with XFS. Not sure how
that works in Fuel, never used it.
On Thu, May 28, 2015 at 8:01 AM, Forrest Flagg fostro.fl...@gmail.com
wrote:
I'm also curious about this. Here are some other pieces of information
relevant to the discussion. Maybe
Hi David,
So Ceph will use Copy-on-write even with XFS?
Thanks,
Steve
On Thu, May 28, 2015 at 10:36 AM, David Medberry openst...@medberry.net
wrote:
This isn't remotely related to btrfs. It works fine with XFS. Not sure how
that works in Fuel, never used it.
On Thu, May 28, 2015 at 8:01
and better explained here:
http://ceph.com/docs/master/rbd/qemu-rbd/
On Thu, May 28, 2015 at 6:02 AM, David Medberry openst...@medberry.net
wrote:
The primary difference is the ability for CEPH to make zero byte copies.
When you use qcow2, ceph must actually create a complete copy instead of a
The primary difference is the ability for CEPH to make zero byte copies.
When you use qcow2, ceph must actually create a complete copy instead of a
zero byte copy as it cannot do its own copy-on-write tricks with a qcow2
image.
So, yes, it will work fine with qcow2 images but it won't be as
yep. It's at the CEPH level (not the XFS level.)
On Thu, May 28, 2015 at 8:40 AM, Stephen Cousins steve.cous...@maine.edu
wrote:
Hi David,
So Ceph will use Copy-on-write even with XFS?
Thanks,
Steve
On Thu, May 28, 2015 at 10:36 AM, David Medberry openst...@medberry.net
wrote:
This
15 matches
Mail list logo