qmp_blk_snp.py

#!/usr/bin/python
import qmp_shell
import sys

sock,file_name = sys.argv[1:]
print file_name

q = qmp_shell.QMPShell(sock)

q.connect()                                                                                                   

cmd = 'blockdev-snapshot-sync device=ide0-hd0 snapshot-file=%s' % file_name
q._execute_cmd(cmd)

q.close()