[lustre-devel] [PATCH 12/15] lnet: peer state to lock primary nid

James Simmons jsimmons at infradead.org
Sun Aug 22 19:27:43 PDT 2021

From: Amir Shehata <ashehata at whamcloud.com>

Introduce the following two peer states:

LNET_PEER_LOCK_PRIMARY, set by Lustre to lock the primary NID
of a peer to the NID Lustre is configured with

LNET_PEER_BAD_CONFIG, set by LNet if Lustre attempts to set
a peer's Primary NID to a NID used as the primary NID of another

WC-bug-id: https://jira.whamcloud.com/browse/LU-14668
Lustre-commit: 684943e2d0c2ad09 ("LU-14668 lnet: peer state to lock primary nid")
Signed-off-by: Amir Shehata <ashehata at whamcloud.com>
Reviewed-on: https://review.whamcloud.com/43562
Reviewed-by: Alexander Boyko <alexander.boyko at hpe.com>
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>
 include/linux/lnet/lib-types.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/lnet/lib-types.h b/include/linux/lnet/lib-types.h
index 6b97ab9..85b0d54 100644
--- a/include/linux/lnet/lib-types.h
+++ b/include/linux/lnet/lib-types.h
@@ -812,6 +812,13 @@ struct lnet_peer {
 /* lnet_peer_del()/lnet_peer_del_locked() has been called on the peer */
+/* lock primary NID to what's requested by ULP */
+/* this is for informational purposes only. It is set if a peer gets
+ * configured from Lustre with a primary NID which belongs to another peer
+ * which is also configured by Lustre as the primary NID.
+ */
 struct lnet_peer_net {
 	/* chain on lp_peer_nets */

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