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ab1f1a306b
In some cases we get stuck where we are unable to retrieve the current state of lvm as we are encountering an error. When the error is persistent we will log and exit the daemon instead of consuming vast amounts of resources. Signed-off-by: Tony Asleson <tasleson@redhat.com>
100 lines
2.5 KiB
Python
100 lines
2.5 KiB
Python
# Copyright (C) 2015-2016 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import multiprocessing
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import queue
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import itertools
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from lvmdbusd import path
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LVM_CMD = os.getenv('LVM_BINARY', path.LVM_BINARY)
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# This is the global object manager
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om = None
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# This is the global bus connection
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bus = None
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# Command line args
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args = None
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# Set to true if we are depending on external events for updates
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got_external_event = False
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# Shared state variable across all processes
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run = multiprocessing.Value('i', 1)
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# If this is set to true, the current setup support lvm shell and we are
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# running in that mode of operation
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SHELL_IN_USE = None
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# Lock used by pprint
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stdout_lock = multiprocessing.Lock()
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worker_q = queue.Queue()
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# Main event loop
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loop = None
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BUS_NAME = os.getenv('LVM_DBUS_NAME', 'com.redhat.lvmdbus1')
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BASE_INTERFACE = 'com.redhat.lvmdbus1'
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PV_INTERFACE = BASE_INTERFACE + '.Pv'
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VG_INTERFACE = BASE_INTERFACE + '.Vg'
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LV_INTERFACE = BASE_INTERFACE + '.Lv'
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LV_COMMON_INTERFACE = BASE_INTERFACE + '.LvCommon'
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THIN_POOL_INTERFACE = BASE_INTERFACE + '.ThinPool'
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CACHE_POOL_INTERFACE = BASE_INTERFACE + '.CachePool'
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LV_CACHED = BASE_INTERFACE + '.CachedLv'
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SNAPSHOT_INTERFACE = BASE_INTERFACE + '.Snapshot'
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MANAGER_INTERFACE = BASE_INTERFACE + '.Manager'
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JOB_INTERFACE = BASE_INTERFACE + '.Job'
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BASE_OBJ_PATH = '/' + BASE_INTERFACE.replace('.', '/')
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PV_OBJ_PATH = BASE_OBJ_PATH + '/Pv'
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VG_OBJ_PATH = BASE_OBJ_PATH + '/Vg'
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LV_OBJ_PATH = BASE_OBJ_PATH + '/Lv'
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THIN_POOL_PATH = BASE_OBJ_PATH + "/ThinPool"
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CACHE_POOL_PATH = BASE_OBJ_PATH + "/CachePool"
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HIDDEN_LV_PATH = BASE_OBJ_PATH + "/HiddenLv"
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MANAGER_OBJ_PATH = BASE_OBJ_PATH + '/Manager'
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JOB_OBJ_PATH = BASE_OBJ_PATH + '/Job'
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# Counters for object path generation
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pv_id = itertools.count()
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vg_id = itertools.count()
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lv_id = itertools.count()
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thin_id = itertools.count()
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cache_pool_id = itertools.count()
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job_id = itertools.count()
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hidden_lv = itertools.count()
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# Used to prevent circular imports...
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load = None
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event = None
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# Global cached state
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db = None
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# lvm flight recorder
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blackbox = None
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# RequestEntry ctor
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create_request_entry = None
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def exit_daemon():
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"""
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Exit the daemon cleanly
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:return:
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"""
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if run and loop:
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run.value = 0
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loop.quit()
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