From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Mon, 23 Nov 2020 20:45:50 -0600
Subject: [PATCH] mpathpersist: update prkeys file on changing registrations

When the "reservation_key" option is set to "file" and Register command
is run with both the current Reservation Key and a new Service Action
Reservation Key, mpathpersist will change the registration, but will not
update the prkeys file. This means that future paths that come online
will not be able to register, since multipathd is still using the old
reservation key. Fix this.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
 libmpathpersist/mpath_persist.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index aa196008..a01dfb0b 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -307,9 +307,10 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
 
 	memcpy(&prkey, paramp->sa_key, 8);
 	if (mpp->prkey_source == PRKEY_SOURCE_FILE && prkey &&
-	    ((!get_be64(mpp->reservation_key) &&
-	      rq_servact == MPATH_PROUT_REG_SA) ||
-	     rq_servact == MPATH_PROUT_REG_IGN_SA)) {
+	    (rq_servact == MPATH_PROUT_REG_IGN_SA ||
+	     (rq_servact == MPATH_PROUT_REG_SA &&
+	      (!get_be64(mpp->reservation_key) ||
+	       memcmp(paramp->key, &mpp->reservation_key, 8) == 0)))) {
 		memcpy(&mpp->reservation_key, paramp->sa_key, 8);
 		if (update_prkey_flags(alias, get_be64(mpp->reservation_key),
 				       paramp->sa_flags)) {
-- 
2.17.2