From: Serguei Smirnov <ssmirnov@whamcloud.com>
Date: Wed, 9 Jun 2021 21:22:12 +0000 (-0700)
Subject: LU-14750 lnet: use ni fatal error when calculating net health
X-Git-Tag: 2.14.53~61
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=86a69f9eb5cab3f9eb57afcd984a2ecd215b89df;p=fs%2Flustre-release.git

LU-14750 lnet: use ni fatal error when calculating net health

When ni is flagged with "fatal_error" by LND, its health score
remains unaffected. This allows for the net containing such ni
to be selected for tx even if it is the only ni in this net.
Take "fatal_error" status of the ni into account when calculating
the net health score.

Test-Parameters: trivial
Signed-off-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Change-Id: Ib76245f835f1458873f0c05ad9b6727d295857de
Reviewed-on: https://review.whamcloud.com/43962
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Cyril Bordage <cbordage@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lnet/lnet/api-ni.c b/lnet/lnet/api-ni.c
index d60c905..835d96a 100644
--- a/lnet/lnet/api-ni.c
+++ b/lnet/lnet/api-ni.c
@@ -3177,11 +3177,12 @@ int lnet_get_net_healthv_locked(struct lnet_net *net)
 {
 	struct lnet_ni *ni;
 	int best_healthv = 0;
-	int healthv;
+	int healthv, ni_fatal;
 
 	list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
 		healthv = atomic_read(&ni->ni_healthv);
-		if (healthv > best_healthv)
+		ni_fatal = atomic_read(&ni->ni_fatal_error_on);
+		if (!ni_fatal && healthv > best_healthv)
 			best_healthv = healthv;
 	}