From accff9a4a72195bc2be35d0edfcd1f4f51954971 Mon Sep 17 00:00:00 2001
From: thepeople <thepeople@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 12 Feb 2010 01:37:02 +0000
Subject: [PATCH] Here is LVM support for OpenWRT.  It introduces 3 new
 packages: - kmod-dm for the device mapper kernel module. - kmod-libdevmapper
 for the device-mapper library. - kmod-lvm2 for the lvm tool. Note that it
 currently does not create the symlinks for all the lvm tools, so you have to
 use lvm pvs rather than just pvs. Thanks Stefan Monnier

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19595 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../files/etc/hotplug2-common.rules           |  6 ++++
 package/kernel/modules/block.mk               | 29 +++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/package/base-files/files/etc/hotplug2-common.rules b/package/base-files/files/etc/hotplug2-common.rules
index d6dd6e8a9..a7aba35a9 100644
--- a/package/base-files/files/etc/hotplug2-common.rules
+++ b/package/base-files/files/etc/hotplug2-common.rules
@@ -34,6 +34,12 @@ DEVPATH is set, SUBSYSTEM ~~ (input) {
 	makedev /dev/input/%DEVICENAME% 0644
 }
 
+DEVICENAME == device-mapper {
+       nothrottle
+       makedev /dev/mapper/control 0600
+}
+
+
 DEVPATH is set {
 	nothrottle
 	makedev /dev/%DEVICENAME% 0644
diff --git a/package/kernel/modules/block.mk b/package/kernel/modules/block.mk
index b1804337c..34c6f9927 100644
--- a/package/kernel/modules/block.mk
+++ b/package/kernel/modules/block.mk
@@ -360,6 +360,35 @@ endef
 $(eval $(call KernelPackage,nbd))
 
 
+define KernelPackage/dm
+  SUBMENU:=$(BLOCK_MENU)
+  TITLE:=Device Mapper
+  # All the "=n" are unnecessary, they're only there
+  # to stop the config from asking the question.
+  # MIRROR is M because I've needed it for pvmove.
+  KCONFIG:= \
+       CONFIG_BLK_DEV_MD=n \
+       CONFIG_DM_DEBUG=n \
+       CONFIG_DM_CRYPT=n \
+       CONFIG_DM_UEVENT=n \
+       CONFIG_DM_DELAY=n \
+       CONFIG_DM_MULTIPATH=n \
+       CONFIG_DM_ZERO=n \
+       CONFIG_DM_SNAPSHOT=n \
+       CONFIG_MD=y \
+       CONFIG_BLK_DEV_DM \
+       CONFIG_DM_MIRROR
+  FILES:=$(LINUX_DIR)/drivers/md/dm-*.$(LINUX_KMOD_SUFFIX)
+  AUTOLOAD:=$(call AutoLoad,30,dm-mod dm-region-hash dm-mirror dm-log)
+endef
+
+define KernelPackage/dm/description
+ Kernel module necessary for LVM2 support
+endef
+
+$(eval $(call KernelPackage,dm))
+
+
 define KernelPackage/pata-rb153-cf
 $(call KernelPackage/ata/Depends,@TARGET_adm5120_router_le)
   TITLE:=RouterBOARD 153 CF Slot support
-- 
2.20.1