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authorPhilipp Reisner <philipp.reisner@linbit.com>2011-11-11 12:31:20 +0100
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-08 16:58:10 +0100
commit380207d08e7c4d1b19c0323777278992b4fbf9d6 (patch)
tree3a35f3543810eb2a7d87f15dd62a8fe8e13aad76 /include/linux/drbd_limits.h
parentd10b4ea32bf2b77a3d56a20992cd549978df7b38 (diff)
drbd: Load balancing of read requests
New config option for the disk secition "read-balancing", with the values: prefer-local, prefer-remote, round-robin, when-congested-remote. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/drbd_limits.h')
-rw-r--r--include/linux/drbd_limits.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h
index 6d0a24331ed..17ef66a5c11 100644
--- a/include/linux/drbd_limits.h
+++ b/include/linux/drbd_limits.h
@@ -161,6 +161,7 @@
#define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT
#define DRBD_ON_NO_DATA_DEF OND_IO_ERROR
#define DRBD_ON_CONGESTION_DEF OC_BLOCK
+#define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL
#define DRBD_MAX_BIO_BVECS_MIN 0
#define DRBD_MAX_BIO_BVECS_MAX 128