rbd: introduce rados block device (rbd), based on libceph

The rados block device (rbd), based on osdblk, creates a block device
that is backed by objects stored in the Ceph distributed object storage
cluster.  Each device consists of a single metadata object and data
striped over many data objects.

The rbd driver supports read-only snapshots.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index de277689da61..4b9359a6f6ca 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -488,4 +488,21 @@ config BLK_DEV_HD
 
           If unsure, say N.
 
+config BLK_DEV_RBD
+        tristate "Rados block device (RBD)"
+        depends on INET && EXPERIMENTAL && BLOCK
+        select CEPH_LIB
+        select LIBCRC32C
+        select CRYPTO_AES
+        select CRYPTO
+        default n
+        help
+          Say Y here if you want include the Rados block device, which stripes
+          a block device over objects stored in the Ceph distributed object
+          store.
+
+          More information at http://ceph.newdream.net/.
+
+          If unsure, say N.
+
 endif # BLK_DEV