From: Ben Hutchings <ben@decadent.org.uk>
Date: Thu, 28 Aug 2014 08:25:53 +0000 (-0700)
Subject: Add Btrfs offline dedupe
X-Git-Tag: debconf2014~9
X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=a4c76f99af3d219fdcd4c146998230e2b05b394f;p=kernel-news-talk.git

Add Btrfs offline dedupe
---

diff --git a/index.html b/index.html
index 0aae408..3a07e30 100644
--- a/index.html
+++ b/index.html
@@ -253,6 +253,29 @@
   </ul>
 </div>
 
+<div class="slide">
+  <h1>Btrfs offline dedupe [3.12]</h1>
+  <ul class="incremental">
+    <li>
+      Btrfs generally does COW rather than updating in-place, allowing
+      snapshots and file copies to defer the actual copying and save
+      space
+    </li>
+    <li>
+      Filesystems may still end up with multiple copies of the same
+      file content
+    </li>
+    <li>
+      Btrfs doesn't actively merge these duplicates, but userland can
+      tell it to do so
+    </li>
+    <li>
+      Many file dedupe tools are packaged for Debian, but not one that
+      works with this Btrfs feature, e.g. bedup
+    </li>
+  </ul>
+</div>
+
 <div class="slide">
   <h1>Questions?</h1>
 </div>