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create_snapshot.py
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create_snapshot.py
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#!/usr/bin/env python
import argparse
import libvirt
import sys
from xmlbuilder import XMLBuilder
class LibVirtClass():
def connect(self, URI='qemu:///system'):
"""Make connection to the Hypervisor
URI: specify which driver a connection refers to
"""
self.libvirt_connection = libvirt.open(URI)
if self.libvirt_connection == None:
print 'Unable to connect to the hypervisor'
sys.exit(1)
def close(self):
"""Close connection
"""
try:
self.libvirt_connection.close()
except:
print 'Unable to close connection to Hypervisor.'
def create_snapshot(self, domain, snapshot_name, \
snapshot_description):
"""Create VM snapshot
connection: object with a connection to the Hypervisor
domain: VM name
snapshot_name
snapshot_description
"""
try:
libvirt_domain = self.libvirt_connection.lookupByName(domain)
xml_base = XMLBuilder('domainsnapshot')
xml_base.name(snapshot_name)
xml_base.description(snapshot_description)
xml = str(xml_base)
libvirt_domain.snapshotCreateXML(xml)
except:
print 'Unable to create snapshot'
sys.exit(1)
print 'Snapshot has been created successfully.'
def main(args):
lv = LibVirtClass()
lv.connect()
lv.create_snapshot(args.domain, args.snapshot_name, \
args.snapshot_description)
lv.close()
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Process VM snapshots.')
parser.add_argument("domain", type=str, help="Domain")
parser.add_argument('-r', '--snapshot-name', metavar=('SNAME'), type=str,
help='snapshot name', required=True)
parser.add_argument('-sd', '--snapshot-description', metavar=('SDESCRIPTION'), type=str,
help='snapshot description', default='blank')
parser.add_argument('-v', '--version', action='version',
version='Version: 1.0')
args = parser.parse_args()
main(args)