mirror of
git://sourceware.org/git/lvm2.git
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55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
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# 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 pyudev
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from .refresh import event_add
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from . import cfg
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observer = None
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# noinspection PyUnusedLocal
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def filter_event(action, device):
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# Filter for events of interest and add a request object to be processed
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# when appropriate.
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refresh = False
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if '.ID_FS_TYPE_NEW' in device:
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fs_type_new = device['.ID_FS_TYPE_NEW']
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if 'LVM' in fs_type_new:
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refresh = True
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elif fs_type_new == '':
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# Check to see if the device was one we knew about
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if 'DEVNAME' in device:
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found = cfg.om.get_object_by_lvm_id(device['DEVNAME'])
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if found:
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refresh = True
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if 'DM_LV_NAME' in device:
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refresh = True
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if refresh:
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event_add(('udev',))
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def add():
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global observer
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context = pyudev.Context()
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monitor = pyudev.Monitor.from_netlink(context)
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monitor.filter_by('block')
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observer = pyudev.MonitorObserver(monitor, filter_event)
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observer.start()
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def remove():
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global observer
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observer.stop()
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observer = None
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