From 84a5c56a8351e2561d510be56e7dc1e4baaa9ca9 Mon Sep 17 00:00:00 2001
From: Tobias Grosser <tobias@grosser.es>
Date: Sat, 6 Aug 2016 09:23:57 +0200
Subject: [PATCH] btrbk: disable compression in gpg

We already perform compression before gpg, such that compressing in gpg
is just a waste of time. Interestingly, it seems gpg is not trying to
recompress gzip[ed] input streams, as for the default gzip compression
this patch does not change performance. However, it is necessary for
the upcoming lz4 compression to show its real benefit.
---
 btrbk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/btrbk b/btrbk
index 6dc7bf9..87a14b1 100755
--- a/btrbk
+++ b/btrbk
@@ -1092,7 +1092,7 @@ sub btrfs_send_to_file($$$$;@)
   if($opts{encrypt}) {
     die unless($opts{encrypt}->{type} eq "gpg");
     $target_filename .= '.gpg';
-    my @gpg_options = ( '--batch', '--no-tty', '--trust-model', 'always' );
+    my @gpg_options = ( '--batch', '--no-tty', '--trust-model', 'always', '--compress-algo', 'none' );
     push(@gpg_options, ( '--no-default-keyring', '--keyring', $opts{encrypt}->{keyring} )) if($opts{encrypt}->{keyring});
     push(@gpg_options, ( '--default-recipient', $opts{encrypt}->{recipient} )) if($opts{encrypt}->{recipient});
     push @cmd_pipe, {