[PATCH 1/6] mpathpersist: Fix Register and Ignore with 0x00 SARK

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When the Register and Ignore command is run with sg_persist, if a 0x00
Service Action Reservation Key is given or the --param-sark option is
not used at all, sg_persist will clear the registration.  mpathpersist
will fail with an error.  This patch fixes mpathpersist to work like
sg_persist in this case.

Signed-off-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
---
 libmpathpersist/mpath_persist.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index 79322e86..41789c46 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -304,7 +304,8 @@ int __mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope,
 	}
 
 	if (memcmp(paramp->key, &mpp->reservation_key, 8) &&
-	    memcmp(paramp->sa_key, &mpp->reservation_key, 8)) {
+	    memcmp(paramp->sa_key, &mpp->reservation_key, 8) &&
+	    (prkey || rq_servact != MPATH_PROUT_REG_IGN_SA)) {
 		condlog(0, "%s: configured reservation key doesn't match: 0x%" PRIx64, alias, get_be64(mpp->reservation_key));
 		ret = MPATH_PR_SYNTAX_ERROR;
 		goto out1;
-- 
2.17.2

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