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From: James Simmons <jsimmons@infradead.org>
To: lustre-devel@lists.lustre.org
Subject: [lustre-devel] [PATCH 15/22] lnet: set route aliveness properly
Date: Tue,  2 Jun 2020 20:59:54 -0400
Message-ID: <1591146001-27171-16-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1591146001-27171-1-git-send-email-jsimmons@infradead.org>

From: Amir Shehata <ashehata@whamcloud.com>

In the case when the discover is toggled from on to off, the route
aliveness might become stale due to not updating the route->lr_alive
variable correctly. It will get updated once the gateway is pinged.
However, there is a period of max alive_router_check_interval where
the route can be down.

WC-bug-id: https://jira.whamcloud.com/browse/LU-13472
Lustre-commit: eee4358d9d467 ("LU-13472 lnet: set route aliveness properly")
Signed-off-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/38323
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 net/lnet/lnet/router.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/lnet/lnet/router.c b/net/lnet/lnet/router.c
index 903d027..c0578d9 100644
--- a/net/lnet/lnet/router.c
+++ b/net/lnet/lnet/router.c
@@ -513,8 +513,10 @@ bool lnet_is_route_alive(struct lnet_route *route)
 		 * on the gateway we assume this is intentional and we mark the
 		 * gateway as multi-hop
 		 */
-		list_for_each_entry(route, &lp->lp_routes, lr_gwlist)
+		list_for_each_entry(route, &lp->lp_routes, lr_gwlist) {
+			lnet_set_route_aliveness(route, true);
 			lnet_set_route_hop_type(lp, route);
+		}
 
 		return;
 	}
-- 
1.8.3.1

  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-03  0:59 [lustre-devel] [PATCH 00/22] lustre: OpenSFS backport patches for May 29 2020 James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 01/22] lnet: libcfs: fix CPT handling for UP systems James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 02/22] lustre: use BIT() macro where appropriate in include James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 03/22] lustre: use BIT() macro where appropriate James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 04/22] lustre: ptlrpc: change LONG_UNLINK to PTLRPC_REQ_LONG_UNLINK James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 05/22] lustre: llite: use %pd to report dentry names James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 06/22] lnet: tidy lnet_discover and fix mem accounting bug James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 07/22] lustre: llite: prevent MAX_DIO_SIZE 32-bit truncation James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 08/22] lustre: llite: integrate statx() API with Lustre James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 09/22] lustre: ldlm: no current source if lu_ref_del not in same tsk James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 10/22] lnet: always pass struct lnet_md by reference James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 11/22] lustre: llite: fix read if readahead window smaller than rpc size James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 12/22] lustre: obdclass: bind zombie export cleanup workqueue James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 13/22] lnet: handle discovery off properly James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 14/22] lnet: Force full discovery cycle James Simmons
2020-06-03  0:59 ` James Simmons [this message]
2020-06-03  0:59 ` [lustre-devel] [PATCH 16/22] lnet: Correct the default LND timeout James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 17/22] lnet: Add lnet_lnd_timeout to sysfs James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 18/22] lnet: lnd: Allow independent ko2iblnd timeout James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 19/22] lnet: lnd: Allow independent socklnd timeout James Simmons
2020-06-03  0:59 ` [lustre-devel] [PATCH 20/22] lnet: lnd: gracefully handle unexpected events James Simmons
2020-06-03  1:00 ` [lustre-devel] [PATCH 21/22] lustre: update version to 2.13.54 James Simmons
2020-06-03  1:00 ` [lustre-devel] [PATCH 22/22] lnet: procs: print new line based on distro James Simmons

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