From 424f396e428573b3e1a9e0aa0252ba452f36ec76 Mon Sep 17 00:00:00 2001
From: Dave Wysochanski <dwysocha@redhat.com>
Date: Sun, 26 Jul 2009 20:58:11 +0000
Subject: [PATCH] Add lvm_lv_is_active and lvm_lv_is_suspended.

Return whether an LV is active in the kernel (live table) or suspended
(table suspend).


Author: Dave Wysochanski <dwysocha@redhat.com>
---
 liblvm/.exported_symbols |  2 ++
 liblvm/lvm.h             | 18 ++++++++++++++++++
 liblvm/lvm_lv.c          | 19 +++++++++++++++++++
 3 files changed, 39 insertions(+)

diff --git a/liblvm/.exported_symbols b/liblvm/.exported_symbols
index 6708154d0..991142304 100644
--- a/liblvm/.exported_symbols
+++ b/liblvm/.exported_symbols
@@ -17,6 +17,8 @@ lvm_lv_deactivate
 lvm_lv_get_uuid
 lvm_lv_get_name
 lvm_lv_get_size
+lvm_lv_is_active
+lvm_lv_is_suspended
 lvm_vg_create
 lvm_vg_extend
 lvm_vg_set_extent_size
diff --git a/liblvm/lvm.h b/liblvm/lvm.h
index 13c723d27..c2fef96a6 100644
--- a/liblvm/lvm.h
+++ b/liblvm/lvm.h
@@ -516,6 +516,24 @@ char *lvm_lv_get_name(const lv_t *lv);
  */
 uint64_t lvm_lv_get_size(const lv_t *lv);
 
+/**
+ * Get the current activation state of a logical volume.
+ *
+ * \param   lv
+ *          Logical volume handle.
+ * \return  1 if the LV is active in the kernel, 0 if not
+ */
+uint64_t lvm_lv_is_active(const lv_t *lv);
+
+/**
+ * Get the current suspended state of a logical volume.
+ *
+ * \param   lv
+ *          Logical volume handle.
+ * \return  1 if the LV is suspended in the kernel, 0 if not
+ */
+uint64_t lvm_lv_is_suspended(const lv_t *lv);
+
 /************************** physical volume handling ************************/
 
 /**
diff --git a/liblvm/lvm_lv.c b/liblvm/lvm_lv.c
index 78057afe8..a2436ed44 100644
--- a/liblvm/lvm_lv.c
+++ b/liblvm/lvm_lv.c
@@ -19,6 +19,7 @@
 #include "defaults.h"
 #include "segtype.h"
 #include "locking.h"
+#include "activate.h"
 
 #include <string.h>
 
@@ -49,6 +50,24 @@ char *lvm_lv_get_name(const lv_t *lv)
 	return name;
 }
 
+uint64_t lvm_lv_is_active(const lv_t *lv)
+{
+	struct lvinfo info;
+	if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
+	    info.exists && info.live_table)
+		return 1;
+	return 0;
+}
+
+uint64_t lvm_lv_is_suspended(const lv_t *lv)
+{
+	struct lvinfo info;
+	if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
+	    info.exists && info.suspended)
+		return 1;
+	return 0;
+}
+
 /* Set defaults for non-segment specific LV parameters */
 static void _lv_set_default_params(struct lvcreate_params *lp,
 				   vg_t *vg, const char *lvname,
-- 
2.43.5