[lustre-devel] [PATCH 19/32] lnet: asym route inconsistency warning
James Simmons
jsimmons at infradead.org
Wed Aug 3 18:38:04 PDT 2022
From: Gian-Carlo DeFazio <defazio1 at llnl.gov>
lnet_check_route_inconsistency() checks for inconsistency between
the lr_hops and lr_single_hop values of a route.
A warning is currently emitted if the route is not single hop
and the hop count is either 1 or LNET_UNDEFINED_HOPS.
To emit the warning, add the requirement that
avoid_asym_router_failure is enabled.
WC-bug-id: https://jira.whamcloud.com/browse/LU-14555
Lustre-commit: 6ab060e58e6b3f38b ("LU-14555 lnet: asym route inconsistency warning")
Signed-off-by: Gian-Carlo DeFazio <defazio1 at llnl.gov>
Reviewed-on: https://review.whamcloud.com/46918
Reviewed-by: Olaf Faaland-LLNL <faaland1 at llnl.gov>
Reviewed-by: Serguei Smirnov <ssmirnov at whamcloud.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
net/lnet/lnet/router.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/lnet/lnet/router.c b/net/lnet/lnet/router.c
index bbef2b3..b684243 100644
--- a/net/lnet/lnet/router.c
+++ b/net/lnet/lnet/router.c
@@ -369,7 +369,8 @@ bool lnet_is_route_alive(struct lnet_route *route)
lnet_check_route_inconsistency(struct lnet_route *route)
{
if (!route->lr_single_hop &&
- (route->lr_hops == 1 || route->lr_hops == LNET_UNDEFINED_HOPS)) {
+ (route->lr_hops == 1 || route->lr_hops == LNET_UNDEFINED_HOPS) &&
+ avoid_asym_router_failure) {
CWARN("route %s->%s is detected to be multi-hop but hop count is set to %d\n",
libcfs_net2str(route->lr_net),
libcfs_nidstr(&route->lr_gateway->lp_primary_nid),
--
1.8.3.1
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