From 45fec93749f8474db30cb0b518ca9b2f7b80f142 Mon Sep 17 00:00:00 2001
From: Federico Simoncelli <fsimonce@redhat.com>
Date: Thu, 28 Feb 2013 10:44:49 +0100
Subject: [PATCH 31/32] packaging: add load_needed_modules.py.in

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
---
 vdsm-tool/load_needed_modules.py.in | 61 +++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 vdsm-tool/load_needed_modules.py.in

diff --git a/vdsm-tool/load_needed_modules.py.in b/vdsm-tool/load_needed_modules.py.in
new file mode 100644
index 0000000..675a172
--- /dev/null
+++ b/vdsm-tool/load_needed_modules.py.in
@@ -0,0 +1,61 @@
+# Copyright IBM, Corp. 2012
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+# Refer to the README and COPYING files for full details of the license
+#
+
+
+import subprocess
+
+from vdsm.tool import expose
+
+
+EX_MODPROBE = '@MODPROBE_PATH@'
+
+
+def _exec_command(argv):
+    """
+    This function executes a given shell command.
+    """
+
+    p = subprocess.Popen(argv, stdout=subprocess.PIPE,
+                         stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    rc = p.returncode
+    if rc != 0:
+        raise Exception("Execute command %s failed: %s" % (argv, err))
+
+
+def _enable_bond_dev():
+    REQUIRED = set(['bond0', 'bond1', 'bond2', 'bond3', 'bond4'])
+    MASTER_FILE = '/sys/class/net/bonding_masters'
+
+    # @ENGINENAME@ currently assumes that all bonding devices pre-exist
+    existing = set(file(MASTER_FILE).read().split())
+    with open(MASTER_FILE, 'w') as f:
+        for bond in REQUIRED - existing:
+            f.write('+%s\n' % bond)
+
+
+@expose('load-needed-modules')
+def load_needed_modules():
+    """
+    Load needed modules
+    """
+
+    for mod in ['tun', 'bonding', '8021q']:
+        _exec_command([EX_MODPROBE, mod])
+    _enable_bond_dev()
-- 
1.8.1.2