From 0515ebb621901c881e4d2a34ab2aa01f47e81eb8 Mon Sep 17 00:00:00 2001 From: Martin George Date: Mon, 12 Mar 2012 13:52:11 +0530 Subject: [PATCH] multipath: Set 'tur' as the default path checker for NetApp LUNs In our tests, we've noticed that the 'tur' checker provides better performance compared to 'directio' primarily because 'tur' does not use FS-based requests unlike 'directio'. Moreover with Hannes' recent async tur enhancement, the 'tur' checker is more efficient now than before. So we'd prefer using 'tur' as the default path checker for NetApp LUNs now. The below patch enables the same by updating the .checker_name in the hwtable for NetApp LUNs. Signed-off-by: Martin George --- libmultipath/hwtable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c index 020c8aa..b8a62dd 100644 --- a/libmultipath/hwtable.c +++ b/libmultipath/hwtable.c @@ -955,7 +955,7 @@ static struct hwentry default_hw[] = { .rr_weight = RR_WEIGHT_NONE, .no_path_retry = NO_PATH_RETRY_UNDEF, .minio = 128, - .checker_name = DIRECTIO, + .checker_name = TUR, .prio_name = PRIO_ONTAP, .prio_args = NULL, }, -- 2.34.1