---
 lib/metadata/segtype.h            |    1 +
 lib/multisnapshot/multisnapshot.c |    2 +-
 tools/lvcreate.c                  |   23 +++++++++++++++++------
 3 files changed, 19 insertions(+), 7 deletions(-)

Index: LVM2.2.02.67/tools/lvcreate.c
===================================================================
--- LVM2.2.02.67.orig/tools/lvcreate.c	2010-06-09 11:55:54.000000000 +0200
+++ LVM2.2.02.67/tools/lvcreate.c	2010-06-09 11:59:08.000000000 +0200
@@ -322,16 +322,27 @@ static int _read_mirror_params(struct lv
 
 unsigned lvm_default_chunksize(const struct segment_type *segtype)
 {
-	return 8;	/* 4KiB */
+	if (segtype->flags & SEG_EXTENDED_CHUNKSIZE)
+		return 64;	/* 32KiB */
+	else
+		return 8;	/* 4KiB */
 }
 
 int lvm_validate_chunksize(const struct segment_type *segtype, uint32_t chunk_size)
 {
-	if (chunk_size < 8 || chunk_size > 1024 ||
-	    (chunk_size & (chunk_size - 1))) {
-		log_error("Chunk size must be a power of 2 in the "
-			  "range 4K to 512K");
-		return 0;
+	if (segtype->flags & SEG_EXTENDED_CHUNKSIZE) {
+		if (!chunk_size ||
+		    (chunk_size & (chunk_size - 1))) {
+			log_error("Chunk size must be a power of 2");
+			return 0;
+		}
+	} else {
+		if (chunk_size < 8 || chunk_size > 1024 ||
+		    (chunk_size & (chunk_size - 1))) {
+			log_error("Chunk size must be a power of 2 in the "
+				  "range 4K to 512K");
+			return 0;
+		}
 	}
 	return 1;
 }
Index: LVM2.2.02.67/lib/metadata/segtype.h
===================================================================
--- LVM2.2.02.67.orig/lib/metadata/segtype.h	2010-06-09 11:35:45.000000000 +0200
+++ LVM2.2.02.67/lib/metadata/segtype.h	2010-06-09 11:59:41.000000000 +0200
@@ -38,6 +38,7 @@ struct dev_manager;
 #define SEG_REPLICATOR		0x00000100U
 #define SEG_REPLICATOR_DEV	0x00000200U
 #define SEG_NOEXPLICIT		0x00000400U
+#define SEG_EXTENDED_CHUNKSIZE	0x00000800U
 #define SEG_UNKNOWN		0x80000000U
 
 #define seg_is_mirrored(seg)	((seg)->segtype->flags & SEG_AREAS_MIRRORED ? 1 : 0)
Index: LVM2.2.02.67/lib/multisnapshot/multisnapshot.c
===================================================================
--- LVM2.2.02.67.orig/lib/multisnapshot/multisnapshot.c	2010-06-09 11:46:41.000000000 +0200
+++ LVM2.2.02.67/lib/multisnapshot/multisnapshot.c	2010-06-09 11:59:08.000000000 +0200
@@ -279,7 +279,7 @@ int init_multiple_segtypes(struct cmd_co
 	segtype->ops = &_multisnapshot_ops;
 	segtype->name = "multisnapshot";
 	segtype->private = NULL;
-	segtype->flags = SEG_SNAPSHOT | SEG_NOEXPLICIT;
+	segtype->flags = SEG_SNAPSHOT | SEG_NOEXPLICIT | SEG_EXTENDED_CHUNKSIZE;
 
 	if (!lvm_register_segtype(lib, segtype))
 		return 0;