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[lvm-devel] [PATCH 24/38] 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>
---
 lib/metadata/metadata-exported.h |    2 ++
 lib/metadata/metadata.c          |   16 ++++++++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h
index b9f5844..d41688e 100644
--- a/lib/metadata/metadata-exported.h
+++ b/lib/metadata/metadata-exported.h
@@ -876,6 +876,8 @@ 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 d81fcd1..03e4a85 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;
-- 
1.6.0.6


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