[400/622] lnet: warn if discovery is off

Commit Message

James Simmons Feb. 27, 2020, 9:14 p.m. UTC

From: Amir Shehata <[e-mail]>

Output a warning if discovery is off and admin is
either trying to add a route or enable routing

WC-bug-id: https://jira.whamcloud.com/browse/LU-12427
Lustre-commit: c9718be06192 ("LU-12427 lnet: warn if discovery is off")
Signed-off-by: Amir Shehata <[e-mail]>
Reviewed-on: https://review.whamcloud.com/35200
Reviewed-by: Olaf Weber <[e-mail]>
Reviewed-by: Chris Horn <[e-mail]>
Reviewed-by: Oleg Drokin <[e-mail]>
Signed-off-by: James Simmons <[e-mail]>
---
 net/lnet/lnet/router.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch

diff --git a/net/lnet/lnet/router.c b/net/lnet/lnet/router.c
index f7b53e0..eb76c72 100644
--- a/net/lnet/lnet/router.c
+++ b/net/lnet/lnet/router.c
@@ -519,6 +519,8 @@  static void lnet_shuffle_seed(void)
 	if (add_route) {
 		gw->lp_health_sensitivity = sensitivity;
 		lnet_add_route_to_rnet(rnet2, route);
+		if (lnet_peer_discovery_disabled)
+			CWARN("Consider turning discovery on to enable full Multi-Rail routing functionality\n");
 	}
 
 	/* get rid of the reference on the lpni.
@@ -1379,6 +1381,9 @@  bool lnet_router_checker_active(void)
 		~LNET_PING_FEAT_RTE_DISABLED;
 	lnet_net_unlock(LNET_LOCK_EX);
 
+	if (lnet_peer_discovery_disabled)
+		CWARN("Consider turning discovery on to enable full Multi-Rail routing functionality\n");
+
 	return rc;
 }