Gestionnaire de fichiers - Editer - /usr/lib/python2.7/site-packages/vdo/vdomgmnt/KernelModuleService.py
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# # Copyright (c) 2018 Red Hat, Inc. # # 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. # """ KernelModuleService - manages the kvdo kernel module $Id: //eng/vdo-releases/magnesium/src/python/vdo/vdomgmnt/KernelModuleService.py#3 $ """ from . import Defaults, Service from utils import Command, CommandError, runCommand import string import yaml class KernelModuleService(Service): """KernelModuleService manages a kernel module on the local node.""" ###################################################################### # Public methods ###################################################################### def running(self, wait=True): """Returns True if the module is loaded and DM target is available.""" retries = 20 if wait else 1 try: runCommand(string.split("lsmod | grep -q '" + self._name + "'"), shell=True, retries=retries) runCommand(string.split("dmsetup targets | grep -q " + Defaults.vdoTargetName), shell=True, retries=retries) return True except CommandError: return False ###################################################################### def start(self): """Loads the module if necessary.""" runCommand(['modprobe', self._name]) ###################################################################### def status(self): """Returns a dictionary representing the status of this object. """ return { _("Name") : self._name, _("Loaded") : self.running(False), _("Version information") : yaml.safe_load(self.version()) } ###################################################################### def stop(self): """Removes the module.""" runCommand(['modprobe', '-r', self._name]) ###################################################################### def version(self): """Returns the module version as a string.""" s = self._name + " " for line in runCommand(['modinfo', self._name], noThrow=True).splitlines(): if line.find('version') == 0: s += line return s ###################################################################### # Overridden methods ###################################################################### def __init__(self, name): super(KernelModuleService, self).__init__(name) ###################################################################### # Protected methods ###################################################################### def _reprAttribute(self, key): """KernelModuleService does not exclude any of its __dict__ contents from its __repr__ result. """ return True
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