mds: change default mds_max_export_size to 20M

1G seems too large. mds may speed long time on processing
imported/expored subtree.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>

diff --git a/src/common/options.cc b/src/common/options.cc
index 1ed027c9bebd6938ef37b37eeb1f758bdcc50d00..1c1587e20feae3f87316057dfa1f99653f6bda7a 100644 (file)
--- a/src/common/options.cc
+++ b/src/common/options.cc
@@ -6270,7 +6270,7 @@ std::vector<Option> get_mds_options() {
     .set_description(""),
 
     Option("mds_max_export_size", Option::TYPE_UINT, Option::LEVEL_DEV)
-    .set_default(1_G)
+    .set_default(20_M)
     .set_description(""),
 
     Option("mds_kill_export_at", Option::TYPE_INT, Option::LEVEL_DEV)