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authorKiyoshi Ueda <k-ueda@ct.jp.nec.com>2009-06-22 10:12:28 +0100
committerAlasdair G Kergon <agk@redhat.com>2009-06-22 10:12:28 +0100
commitf392ba889b019602976082bfe7bf486c2594f85c (patch)
tree962e8f354dfe3df2021476412be8d1bcec8a03d0 /drivers/md/Makefile
parentfd5e033908b7b743b5650790f196761dd930f988 (diff)
downloadop-kernel-dev-f392ba889b019602976082bfe7bf486c2594f85c.zip
op-kernel-dev-f392ba889b019602976082bfe7bf486c2594f85c.tar.gz
dm mpath: add service time load balancer
This patch adds a service time oriented dynamic load balancer, dm-service-time, which selects the path with the shortest estimated service time for the incoming I/O. The service time is estimated by dividing the in-flight I/O size by a performance value of each path. The performance value can be given as a table argument at the table loading time. If no performance value is given, all paths are considered equal. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/Makefile')
-rw-r--r--drivers/md/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index ff9f545..dade52f 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_DM_CRYPT) += dm-crypt.o
obj-$(CONFIG_DM_DELAY) += dm-delay.o
obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o
obj-$(CONFIG_DM_MULTIPATH_QL) += dm-queue-length.o
+obj-$(CONFIG_DM_MULTIPATH_ST) += dm-service-time.o
obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o
obj-$(CONFIG_DM_MIRROR) += dm-mirror.o dm-log.o dm-region-hash.o
obj-$(CONFIG_DM_ZERO) += dm-zero.o
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