Blame SOURCES/0190-RHBZ-1380602-rbd-lock-on-read.patch

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---
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 libmultipath/checkers/rbd.c |    9 ++++++++-
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 1 file changed, 8 insertions(+), 1 deletion(-)
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Index: multipath-tools-130222/libmultipath/checkers/rbd.c
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===================================================================
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--- multipath-tools-130222.orig/libmultipath/checkers/rbd.c
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+++ multipath-tools-130222/libmultipath/checkers/rbd.c
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@@ -45,6 +45,7 @@ struct rbd_checker_context {
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 	char *username;
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 	int remapped;
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 	int blacklisted;
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+	int lock_on_read:1;
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 	rados_t cluster;
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@@ -141,6 +142,9 @@ int libcheck_init(struct checker * c)
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 		goto free_addr;
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 	}
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+	if (strstr(config_info, "lock_on_read"))
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+		ct->lock_on_read = 1;
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+
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 	ct->config_info = strdup(config_info);
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 	if (!ct->config_info)
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 		goto free_addr;
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@@ -397,7 +401,10 @@ static int rbd_remap(struct rbd_checker_
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 	case 0:
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 		argv[i++] = "rbd";
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 		argv[i++] = "map";
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-		argv[i++] = "-o noshare";
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+		if (ct->lock_on_read)
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+			argv[i++] = "-o noshare,lock_on_read";
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+		else
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+			argv[i++] = "-o noshare";
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 		if (ct->username) {
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 			argv[i++] = "--id";
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 			argv[i++] = ct->username;