DRBD: final

Kconfig integration, Makefile and major.h
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

drivers/block/Kconfig

@@ -271,6 +271,8 @@ config BLK_DEV_CRYPTOLOOP
 	  instead, which can be configured to be on-disk compatible with the
 	  cryptoloop device.
 
+source "drivers/block/drbd/Kconfig"
+
 config BLK_DEV_NBD
 	tristate "Network block device support"
 	depends on NET

drivers/block/Makefile

@@ -35,5 +35,6 @@ obj-$(CONFIG_BLK_DEV_UB)	+= ub.o
 obj-$(CONFIG_BLK_DEV_HD)	+= hd.o
 
 obj-$(CONFIG_XEN_BLKDEV_FRONTEND)	+= xen-blkfront.o
+obj-$(CONFIG_BLK_DEV_DRBD)     += drbd/
 
 swim_mod-objs	:= swim.o swim_asm.o

drivers/block/drbd/Kconfig

+#
+# DRBD device driver configuration
+#
+config BLK_DEV_DRBD
+	tristate "DRBD Distributed Replicated Block Device support"
+	select INET
+	select PROC_FS
+	select CONNECTOR
+	select CRYPTO
+	select CRYPTO_HMAC
+	---help---
+	  DRBD is a block device which is designed to build high availability
+	  clusters.  This is done by mirroring a whole block device via (a
+	  dedicated) network.  You could see it as a network RAID 1.
+
+	  Each minor device has a state, which can be 'primary' or 'secondary'.
+	  On the node with the primary device the application is supposed to
+	  run and to access the device (/dev/drbdX). Every write is sent to the
+	  local 'lower level block device' and via network to the node with the
+	  device in 'secondary' state.
+	  The secondary device simply writes the data to its lower level block
+	  device. Currently no read-balancing via the network is done.
+
+	  DRBD can also be used with "shared-disk semantics" (primary-primary),
+	  even though it is a "shared-nothing cluster".  You'd need to use a
+	  cluster file system on top of that for cache coherency.
+
+	  DRBD management is done through user-space tools.
+	  For automatic failover you need a cluster manager (e.g. heartbeat).
+	  See also: http://www.drbd.org/, http://www.linux-ha.org
+
+	  If unsure, say N.

drivers/block/drbd/Makefile

+#CFLAGS_drbd_sizeof_sanity_check.o = -Wpadded # -Werror
+
+drbd-objs  :=	drbd_buildtag.o drbd_bitmap.o drbd_proc.o \
+		drbd_worker.o drbd_receiver.o drbd_req.o drbd_actlog.o \
+		lru_cache.o drbd_main.o drbd_strings.o drbd_nl.o
+
+obj-$(CONFIG_BLK_DEV_DRBD)     += drbd.o

include/linux/major.h

@@ -145,6 +145,7 @@
 #define UNIX98_PTY_MAJOR_COUNT	8
 #define UNIX98_PTY_SLAVE_MAJOR	(UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT)
 
+#define DRBD_MAJOR		147
 #define RTF_MAJOR		150
 #define RAW_MAJOR		162