From a0c848d4e4a9b53fa1f9cc7a8330fea6b23c07a8 Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@redhat.com>
Date: Mon, 4 Mar 2019 14:25:53 -0600
Subject: [PATCH] pvscan: ignore online for unused PV

If an unused PV comes online, ignore it from
pvscan --cache.
---
 tools/pvscan.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/pvscan.c b/tools/pvscan.c
index 389aafafc..c48453136 100644
--- a/tools/pvscan.c
+++ b/tools/pvscan.c
@@ -644,6 +644,8 @@ static int _online_pvscan_one(struct cmd_context *cmd, struct device *dev,
 	const struct format_type *fmt;
 	/* Create a dummy instance. */
 	struct format_instance_ctx fic = { .type = 0 };
+	uint32_t ext_version;
+	uint32_t ext_flags;
 	int ret = 0;
 
 	log_debug("pvscan metadata from dev %s", dev_name(dev));
@@ -667,6 +669,14 @@ static int _online_pvscan_one(struct cmd_context *cmd, struct device *dev,
 		return 1;
 	}
 
+	ext_version = lvmcache_ext_version(info);
+	ext_flags = lvmcache_ext_flags(info);
+
+	if ((ext_version >= 2) && !(ext_flags & PV_EXT_USED)) {
+		log_print("pvscan[%d] PV %s not used.", getpid(), dev_name(dev));
+		return 1;
+	}
+
 	fmt = lvmcache_fmt(info);
 
 	baton.cmd = cmd;