mirror of
https://github.com/ceph/ceph
synced 2024-12-24 04:14:07 +00:00
69 lines
2.0 KiB
ReStructuredText
69 lines
2.0 KiB
ReStructuredText
==============
|
|
QEMU and RBD
|
|
==============
|
|
|
|
Ceph integrates with the QEMU virtual machine. For details on QEMU, see
|
|
`QEMU Open Source Processor Emulator`_. For QEMU documentation, see
|
|
`QEMU Manual`_.
|
|
|
|
.. important:: To use RBD with QEMU, you must have a running Ceph cluster.
|
|
|
|
Installing QEMU on Ubuntu 12.04 Precise
|
|
---------------------------------------
|
|
QEMU packages are incorporated into the Ubuntu 12.04 precise distribution. To
|
|
install QEMU on precise, execute the following::
|
|
|
|
sudo apt-get install qemu
|
|
|
|
Installing QEMU on Earlier Versions of Ubuntu
|
|
---------------------------------------------
|
|
For Ubuntu distributions 11.10 oneiric and earlier, you must install
|
|
the 0.15 version of QEMU or later. To build QEMU from source, use the
|
|
following procedure::
|
|
|
|
cd {your-development-directory}
|
|
git clone git://git.qemu.org/qemu.git
|
|
cd qemu
|
|
./configure --enable-rbd
|
|
make; make install
|
|
|
|
Creating RBD Images with QEMU
|
|
-----------------------------
|
|
You can create an RBD image from QEMU. You must specify ``rbd``,
|
|
the pool name, and the name of the image you wish to create. You must also
|
|
specify the size of the image. ::
|
|
|
|
qemu-img create -f rbd rbd:{pool-name}/{image-name} {size}
|
|
|
|
For example::
|
|
|
|
qemu-img create -f rbd rbd:data/foo 10G
|
|
|
|
Resizing RBD Images with QEMU
|
|
-----------------------------
|
|
You can resize an RBD image from QEMU. You must specify ``rbd``,
|
|
the pool name, and the name of the image you wish to resize. You must also
|
|
specify the size of the image. ::
|
|
|
|
qemu-img resize -f rbd rbd:{pool-name}/{image-name} {size}
|
|
|
|
For example::
|
|
|
|
qemu-img resize -f rbd rbd:data/foo 10G
|
|
|
|
|
|
Retrieving RBD Image Information with QEMU
|
|
------------------------------------------
|
|
You can retrieve RBD image information from QEMU. You must
|
|
specify ``rbd``, the pool name, and the name of the image. ::
|
|
|
|
qemu-img info -f rbd rbd:{pool-name}/{image-name}
|
|
|
|
For example::
|
|
|
|
qemu-img info -f rbd rbd:data/foo
|
|
|
|
|
|
.. _QEMU Open Source Processor Emulator: http://wiki.qemu.org/Main_Page
|
|
.. _QEMU Manual: http://wiki.qemu.org/Manual
|