From: Jim Meyering <meyering@redhat.com>
Date: Sun, 30 Jan 2011 20:27:12 +0000 (+0100)
Subject: doc: NEWS: mention cp's improvement
X-Git-Tag: v8.10~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b11cd01790473b1964a0f91eca5205dfdcae773;p=thirdparty%2Fcoreutils.git

doc: NEWS: mention cp's improvement

* NEWS (New Features): cp now copies sparse files efficiently.
---

diff --git a/NEWS b/NEWS
index 6e7efe1953..042bfed00b 100644
--- a/NEWS
+++ b/NEWS
@@ -21,6 +21,15 @@ GNU coreutils NEWS                                    -*- outline -*-
 
 ** New features
 
+  cp now copies sparse files efficiently on file systems with FIEMAP
+  support (ext4, btrfs, xfs, ocfs2).  Before, it had to read 2^20 bytes
+  when copying a 1MiB sparse file.  Now, it copies bytes only for the
+  non-sparse sections of a file.  Similarly, to induce a hole in the
+  output file, it had to detect a long sequence of zero bytes.  Now,
+  it knows precisely where each hole in an input file is, and can
+  reproduce them efficiently in the output file.  mv also benefits
+  when it resorts to copying, e.g., between file systems.
+
   join now supports -o 'auto' which will automatically infer the
   output format from the first line in each file, to ensure
   the same number of fields are output for each line.