From 1939cf7ce8154d8ed3daaf12db8ae4a7134712af Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Mon, 2 Dec 2013 14:04:20 +0100
Subject: [PATCH] backups: report exception on backup write error

This is only partial solution - this happens in separate thread so main
thread may not notice this problem (and simply will wait on work queue).
---
 core/backup.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/backup.py b/core/backup.py
index 8d768c8f..059a40e7 100644
--- a/core/backup.py
+++ b/core/backup.py
@@ -313,7 +313,10 @@ class Send_Worker(Process):
                 "-C", self.base_dir, filename]
             final_proc  = subprocess.Popen (tar_final_cmd,
                     stdin=subprocess.PIPE, stdout=self.backup_stdout)
-            final_proc.wait()
+            if final_proc.wait() >= 2:
+                # handle only exit code 2 (tar fatal error) or greater (call failed?)
+                raise QubesException("ERROR: Failed to write the backup, out of disk space? "
+                        "Check console output or ~/.xsession-errors for details.")
 
             # Delete the file as we don't need it anymore
             if BACKUP_DEBUG: