From: Dave Wysochanski <dwysocha@redhat.com>
Date: Mon, 28 Jun 2010 20:36:56 +0000 (+0000)
Subject: Add vg get/set methods for VG metadata copies.
X-Git-Tag: v2_02_91~1785
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=821f0cc5ea6fe45832fd858025a37643ae8b01d4;p=lvm2.git

Add vg get/set methods for VG metadata copies.

This patch adds the get and partially implemented set function.
The 'set' function should probably ignore or un-ignore metadata areas
based on new values.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
---

diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h
index 5d87bb30b..83586063f 100644
--- a/lib/metadata/metadata-exported.h
+++ b/lib/metadata/metadata-exported.h
@@ -882,6 +882,8 @@ uint64_t vg_max_pv(const struct volume_group *vg);
 uint64_t vg_max_lv(const struct volume_group *vg);
 uint32_t vg_mda_count(const struct volume_group *vg);
 uint32_t vg_mda_used_count(const struct volume_group *vg);
+uint32_t vg_mda_copies(const struct volume_group *vg);
+int vg_set_mda_copies(struct volume_group *vg, uint32_t value);
 int vg_check_write_mode(struct volume_group *vg);
 #define vg_is_clustered(vg) (vg_status((vg)) & CLUSTERED)
 #define vg_is_exported(vg) (vg_status((vg)) & EXPORTED_VG)
diff --git a/lib/metadata/metadata.c b/lib/metadata/metadata.c
index 14ae93e2d..cdf2beeb4 100644
--- a/lib/metadata/metadata.c
+++ b/lib/metadata/metadata.c
@@ -989,6 +989,22 @@ static int _recalc_extents(uint32_t *extents, const char *desc1,
 	return 1;
 }
 
+uint32_t vg_mda_copies(const struct volume_group *vg)
+{
+	return vg->mda_copies;
+}
+
+int vg_set_mda_copies(struct volume_group *vg, uint32_t value)
+{
+	/* FIXME: add checks, etc, and set the value */
+	/*
+	 * FIXME: Before we set a larger value, we may need to
+	 * enable some mdas on PVS
+	 */
+	vg->mda_copies = value;
+	return 1;
+}
+
 int vg_set_extent_size(struct volume_group *vg, uint32_t new_size)
 {
 	uint32_t old_size = vg->extent_size;