View file File name : vdo-by-dev Content :#!/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() ])