From d2b30b0eac84f75b4b4d3293211c6dc896fb4c97 Mon Sep 17 00:00:00 2001
From: Heinz Mauelshagen <heinzm@redhat.com>
Date: Wed, 30 Oct 2013 14:12:41 +0100
Subject: [PATCH] Fix bz#960284: thin_dump and other persistent-data tools may
 perform IO to misaligned buffers (on 4K hard sectored evices)

---
 persistent-data/buffer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/persistent-data/buffer.h b/persistent-data/buffer.h
index b1a7989..527a239 100644
--- a/persistent-data/buffer.h
+++ b/persistent-data/buffer.h
@@ -41,7 +41,7 @@ namespace persistent_data {
 	// guarantees.
 	//
 	// Alignment must be a power of two.
-	template <uint32_t Size = DEFAULT_BUFFER_SIZE, uint32_t Alignment = 512>
+	template <uint32_t Size = DEFAULT_BUFFER_SIZE, uint32_t Alignment = 4096>
 	class buffer : private boost::noncopyable {
 	public:
 		BOOST_STATIC_ASSERT((Alignment > 1) & !(Alignment & (Alignment - 1)));