Block Devices and CloudStack
=============================
-You may use Ceph block device images with CloudStack 4.0 and higher through
+You may use Ceph Block Device images with CloudStack 4.0 and higher through
``libvirt``, which configures the QEMU interface to ``librbd``. Ceph stripes
block device images as objects across the cluster, which means that large Ceph
-block device images have better performance than a standalone server!
+Block Device images have better performance than a standalone server!
-To use Ceph block devices with CloudStack 4.0 and higher, you must install QEMU,
+To use Ceph Block Devices with CloudStack 4.0 and higher, you must install QEMU,
``libvirt``, and CloudStack first. We recommend using a separate physical host
for your CloudStack installation. CloudStack recommends a minimum of 4GB of RAM
and a dual-core processor, but more CPU and RAM will perform better. The
| OSDs | | Monitors |
+------------------------+ +------------------------+
-.. important:: To use Ceph block devices with CloudStack, you must have a
- running Ceph cluster.
+.. important:: To use Ceph Block Devices with CloudStack, you must have
+ access to a running Ceph Storage Cluster.
CloudStack integrates with Ceph's block devices to provide CloudStack with a
back end for CloudStack's Primary Storage. The instructions below detail the
libvirt from source.
Installing and configuring QEMU for use with CloudStack doesn't require any
-special handling. Ensure that you have a running Ceph cluster. Install QEMU and
-configure it for use with Ceph; then, install ``libvirt`` version 0.9.13 or
-higher (you may need to compile from source) and ensure it is running with Ceph.
+special handling. Ensure that you have a running Ceph Storage Cluster. Install
+QEMU and configure it for use with Ceph; then, install ``libvirt`` version
+0.9.13 or higher (you may need to compile from source) and ensure it is running
+with Ceph.
#. `Install and Configure QEMU`_.
#. `Install and Configure libvirt`_ version 0.9.13 or higher.
.. note:: Raring Ringtail (13.04) will have ``libvirt`` version 0.9.13 or higher
with RBD storage pool support enabled by default.
+index:: pools; CloudStack
+
Create a Pool
=============
======================
To create a new disk offering, refer to `Create a New Disk Offering (4.0.0)`_ or
- `Create a New Disk Offering (4.0.1)`_. Create a disk offering so that it
+`Create a New Disk Offering (4.0.1)`_. Create a disk offering so that it
matches the ``rbd`` tag. The ``StoragePoolAllocator`` will choose the ``rbd``
pool when searching for a suitable storage pool. If the disk offering doesn't
match the ``rbd`` tag, the ``StoragePoolAllocator`` may select the pool you