From ab59bcd8fd5b21398a54df3ea28e3aa89e918538 Mon Sep 17 00:00:00 2001
From: Steven McDonald <steven.mcdonald@anchor.net.au>
Date: Fri, 30 May 2014 13:32:02 +1000
Subject: [PATCH] Fix the block maps for data ranges

The existing code uses the underlying data blocks as keys, and the
origin blocks as values, which is backwards. This is done correctly
above for the single mapping case, so this bug only affects range
mappings.
---
 lib/lvm/thin_snapshot.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/lvm/thin_snapshot.rb b/lib/lvm/thin_snapshot.rb
index 6dbdada..bacb013 100644
--- a/lib/lvm/thin_snapshot.rb
+++ b/lib/lvm/thin_snapshot.rb
@@ -172,7 +172,7 @@ def vg_block_dump
 						len = r.attribute('length').value.to_i
 						ori = r.attribute('origin_begin').value.to_i
 						dat = r.attribute('data_begin').value.to_i
-						h2[(dat..dat+len-1)] = (ori..ori+len-1)
+						h2[(ori..ori+len-1)] = (dat..dat+len-1)
 					end
 
 					h2