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#!/usr/bin/env python3
"""
Save all currently running domU's into DIR.
DIR must exist and be writable by this process.
"""

import libvirt
import os
from argparse import ArgumentParser


parser = ArgumentParser(description=__doc__)
parser.add_argument("dir")
args = parser.parse_args()

try:
    conn = libvirt.open(None)
except libvirt.libvirtError:
    print('Failed to open connection to the hypervisor')
    exit(1)

doms = conn.listDomainsID()
for id in doms:
    if id == 0:
        continue
    dom = conn.lookupByID(id)
    print("Saving %s[%d] ... " % (dom.name(), id))
    path = os.path.join(args.dir, dom.name())
    ret = dom.save(path)
    if ret == 0:
        print("done")
    else:
        print("error %d" % ret)

# import pdb; pdb.set_trace()