From 67cdc9c732090a47f7f0345d43614c8b4a527f53 Mon Sep 17 00:00:00 2001
From: Hu Tao <hutao@cn.fujitsu.com>
Date: Mon, 8 Dec 2014 11:20:54 +0800
Subject: [PATCH] resize: fix 'No space left on device' problem when copying to
 an extended partition (RHBZ#1169015)

Because of the size of an extended partition reported by Linux is always 1024
bytes, so it will always fail to copy to an extended partition.

This patch fixes this problem by copying to the offset of an extended
partition in the destination disk.

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
(cherry picked from commit 9d6f0b6a86d68438b27a3d783677c63f39ec6627)
---
 resize/resize.ml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/resize/resize.ml b/resize/resize.ml
index b581b39..b4e8990 100644
--- a/resize/resize.ml
+++ b/resize/resize.ml
@@ -1152,9 +1152,15 @@ read the man page virt-resize(1).
             * source = "/dev/sda2", because the device name only covers
             * the first 1K of the partition.  Instead, copy the
             * source bytes from the parent disk (/dev/sda).
+            *
+            * You can't write directly to the extended partition,
+            * because the size of it reported by Linux is always 1024
+            * bytes. Instead, write to the offset of the extended
+            * partition in the destination disk (/dev/sdb).
             *)
            let srcoffset = p.p_part.G.part_start in
-           g#copy_device_to_device ~srcoffset ~size:copysize "/dev/sda" target
+           let destoffset = p.p_target_start *^ 512L in
+           g#copy_device_to_device ~srcoffset ~destoffset ~size:copysize "/dev/sda" "/dev/sdb"
         )
       | OpIgnore | OpDelete -> ()
   in
-- 
1.8.3.1