From ed732bcdc90162993e82df1bec8642aabb7a64a5 Mon Sep 17 00:00:00 2001
From: sunguoshuai <sunguoshuai@huawei.com>
Date: Wed, 23 Jan 2019 02:38:00 -0500
Subject: [PATCH] ignore for clear mismatch key

reason:ignore for clear mismatch key
---
 libmpathpersist/mpath_persist.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index f9c3be9..027d006 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -309,7 +309,8 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
 	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 ||
+              (!memcmp(paramp->key, &mpp->reservation_key, 8) && rq_servact == MPATH_PROUT_REG_SA))) {
 		memcpy(&mpp->reservation_key, paramp->sa_key, 8);
 		if (update_prkey_flags(alias, get_be64(mpp->reservation_key),
 				       paramp->sa_flags)) {
@@ -326,12 +327,16 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
                 uireservation >>= 8;
         }
  
-        if (memcmp(paramp->key, uitmp, 8) &&
-            memcmp(paramp->sa_key, uitmp, 8)) {
+       /* pass -I option */
+        if (rq_servact != MPATH_PROUT_REG_IGN_SA) {
+                if (memcmp(paramp->key, uitmp, 8) &&
+                memcmp(paramp->sa_key, uitmp, 8)) {
+                        condlog(0, "%s: configured reservation key doesn't match: 0x%" PRIx64, alias, get_be64(mpp->reservation_key));
+                        ret = MPATH_PR_SYNTAX_ERROR;
+                        goto out1;
+                }
+ 
 
-		condlog(0, "%s: configured reservation key doesn't match: 0x%" PRIx64, alias, get_be64(mpp->reservation_key));
-		ret = MPATH_PR_SYNTAX_ERROR;
-		goto out1;
 	}
 
 	switch(rq_servact)
-- 
1.8.3.1