initial code repo

This patch creates initial code repo.

For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.

For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.

Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/src/ceph/doc/rbd/iscsi-overview.rst b/src/ceph/doc/rbd/iscsi-overview.rst
new file mode 100644
index 0000000..a8c64e2
--- /dev/null
+++ b/src/ceph/doc/rbd/iscsi-overview.rst
@@ -0,0 +1,50 @@
+==================
+Ceph iSCSI Gateway
+==================
+
+The iSCSI gateway is integrating Ceph Storage with the iSCSI standard to provide
+a Highly Available (HA) iSCSI target that exports RADOS Block Device (RBD) images
+as SCSI disks. The iSCSI protocol allows clients (initiators) to send SCSI commands
+to SCSI storage devices (targets) over a TCP/IP network. This allows for heterogeneous
+clients, such as Microsoft Windows, to access the Ceph Storage cluster.
+
+Each iSCSI gateway runs the Linux IO target kernel subsystem (LIO) to provide the
+iSCSI protocol support. LIO utilizes a userspace passthrough (TCMU) to interact
+with Ceph's librbd library and expose RBD images to iSCSI clients. With Ceph’s
+iSCSI gateway you can effectively run a fully integrated block-storage
+infrastructure with all the features and benefits of a conventional Storage Area
+Network (SAN).
+
+.. ditaa::
+                  Cluster Network
+                 +-------------------------------------------+
+                 |             |               |             |
+             +-------+     +-------+       +-------+     +-------+
+             |       |     |       |       |       |     |       |
+             | OSD 1 |     | OSD 2 |       | OSD 3 |     | OSD N |
+             |    {s}|     |    {s}|       |    {s}|     |    {s}|
+             +-------+     +-------+       +-------+     +-------+
+                 |             |               |             |
+      +--------->|             |  +---------+  |             |<---------+
+      :          |             |  |   RBD   |  |             |          :
+      |          +----------------|  Image  |----------------+          |
+      |           Public Network  |    {d}  |                           |
+      |                           +---------+                           |
+      |                                                                 |
+      |                      +-------------------+                      |
+      |   +--------------+   |  iSCSI Initators  |   +--------------+   |
+      |   | iSCSI GW     |   |   +-----------+   |   | iSCSI GW     |   |
+      +-->|  RBD Module  |<--+   | Various   |   +-->|  RBD Module  |<--+
+          |              |   |   | Operating |   |   |              |
+          +--------------+   |   | Systems   |   |   +--------------+
+                             |   +-----------+   |
+                             +-------------------+
+
+
+.. toctree::
+  :maxdepth: 1
+
+  Requirements <iscsi-requirements>
+  Configuring the iSCSI Target <iscsi-targets>
+  Configuring the iSCSI Initiator <iscsi-initiators>
+  Monitoring the iSCSI Gateways <iscsi-monitoring>