From 360c8918bb2f8d17c80f61bc64f8990543b4cc72 Mon Sep 17 00:00:00 2001
From: Axel Burri <axel@tty0.ch>
Date: Mon, 19 Aug 2019 13:03:41 +0200
Subject: [PATCH] btrbk: catch verbose errors from readlink

readlink -v enables "report error messages", printing useful errors
like:

    readlink: /some/dir/: Permission denied
    readlink: /some/dir/: No such file or directory
---
 btrbk | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/btrbk b/btrbk
index 0522416..b46eb6b 100755
--- a/btrbk
+++ b/btrbk
@@ -1889,8 +1889,7 @@ sub system_realpath($)
   my $vol = shift // die;
 
   my $path = $vol->{PATH} // die;;
-  my @quiet = ($loglevel < 3) ? ('-q') : ();
-  my $ret = run_cmd(cmd => vinfo_cmd($vol, "readlink", '-e', @quiet, { unsafe => $path } ),
+  my $ret = run_cmd(cmd => vinfo_cmd($vol, "readlink", '-v', '-e', { unsafe => $path } ),
                     rsh => vinfo_rsh($vol),
                     non_destructive => 1,
                    );