[lustre-devel] [PATCH 4/7] lustre: lmv: change default hash back to fnv_1a_64

[James Simmons]

From: Andreas Dilger <adilger at whamcloud.com>

Until performance issue is resolved, change the default directory
hash type from 'crush' back to 'fnv_1a_64'.

Fixes: 92fb134e43a0 ("lustre: lmv: change default hash type to crush")
WC-bug-id: https://jira.whamcloud.com/browse/LU-15692
Lustre-commit: 0090b6f6f6cfd65fc ("LU-15692 lmv: change default hash back to fnv_1a_64")
Signed-off-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-on: https://review.whamcloud.com/46950
Reviewed-by: Lai Siyao <lai.siyao at whamcloud.com>
Reviewed-by: Shuichi Ihara <sihara at ddn.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
 include/uapi/linux/lustre/lustre_user.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/lustre/lustre_user.h b/include/uapi/linux/lustre/lustre_user.h
index 3017148..fa01c28 100644
--- a/include/uapi/linux/lustre/lustre_user.h
+++ b/include/uapi/linux/lustre/lustre_user.h
@@ -707,7 +707,7 @@ static __attribute__((unused)) const char *mdt_hash_name[] = {
 	"crush",
 };
 
-#define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_CRUSH
+#define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
 
 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
  * and the higher part will be the flag to indicate the status of object,
-- 
1.8.3.1