[sheepdog] [PATCH] Doc. "Sheepdog Basic" add chapter "backup"

[Valerio Pachera]

Signed-off-by: Valerio Pachera <sirio81 at gmail.com>
---
 doc/backup.rst |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 doc/backup.rst

diff --git a/doc/backup.rst b/doc/backup.rst
new file mode 100644
index 0000000..1480926
--- /dev/null
+++ b/doc/backup.rst
@@ -0,0 +1,19 @@
+Backup
+======
+
+Cluster is meant to have a very high fail over but you might want to be able to
+have some backup in case of a disaster recovery.
+Another scenario is that you need to run a copy of a guest on a server outside
+the cluster.
+To achieve that we have to "take out" vdi from the cluster.
+This is rather easy to do:
+
+::
+
+    qemu-img convert -O qcow2 sheepdog:squeeze /media/nas/squeeze.qcow2
+
+To backup a snapshot named 'preUpgrade'
+
+::
+
+    qemu-img convert -O qcow2 sheepdog:squeeze:preUpgrade /media/nas/squeeze_preUpgrade.qcow2
-- 
1.7.10.4