#!/usr/libexec/platform-python
#
# Copyright Red Hat
#
# 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.
#
"""
vdo-by-dev - VDO management by backing device script
$Id: $
"""
import os
import sys
import subprocess
# Fix up the path to address layout changes
for dir in sys.path:
vdoDir = os.path.join(dir, 'vdo')
if os.path.isdir(vdoDir):
sys.path.append(vdoDir)
break
from vdomgmnt import *
conf = Configuration("/etc/vdoconf.yml")
# Hard-code /dev/ in front, as the argument passed via udev to systemd will be
# only the node name from the kernel.
rdev = os.stat('/dev/' + sys.argv[1]).st_rdev
# Loop through each VDO in the config and determine whether its backing device
# matches the one provided by the udev trigger (argv[1]). If so, execute
# the specified operation (argv[2]) against the VDO.
for vdo in conf.getAllVdos().values():
try:
stats = os.stat(vdo.device)
except FileNotFoundError:
# Tolerate that the device of a VDO from the config file may not yet
# be present in the system.
pass
else:
if stats.st_rdev == rdev:
subprocess.check_call([ "vdo" ] + sys.argv[2:] + [ "--name", vdo.getName() ])