c59dc1386f
mdns AND IPv6 Neighbour Discovery Protocol use multicast packets and the macvtap interface drops these packets by default. Since there is no way to tell libvirt to make this better, lets at least use the hook to make the macvtap interface change such that multicast packets will pass. With this, iPXE should work... and mdns should be testable in CI. Change-Id: I397d211675fd7668b8fd19e989d740d6bad2c70e
117 lines
3.3 KiB
Python
Executable File
117 lines
3.3 KiB
Python
Executable File
#!/usr/bin/python -tt
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# Copyright (c) 2017 Intel Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import datetime
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import os
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import re
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import subprocess
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import sys
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# This script is run as a libvirt hook.
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# More information here: https://libvirt.org/hooks.html
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# The devstack/lib/ironic script in function setup_qemu_log_hook() will replace
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# LOG_DIR with the correct location. And will place the script into the correct
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# directory.
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VM_LOG_DIR = os.path.abspath("%LOG_DIR%")
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# Regular expression to find ANSI escape sequences at the beginning of a string
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ANSI_ESCAPE_RE = re.compile(r"""
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^\x1b\[ # ANSI escape codes are ESC (0x1b) [
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?([\d;]*)(\w)""", re.VERBOSE)
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NOW = datetime.datetime.now().strftime("%Y-%m-%d-%H:%M:%S")
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def main():
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if len(sys.argv) < 3:
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return
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guest_name = sys.argv[1]
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action = sys.argv[2]
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if action == "started":
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interfaces = str(
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subprocess.check_output(
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['ip', 'link', 'show', 'type', 'macvtap']
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)).split("\n")
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for iface_line in interfaces:
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if 'macvtap' in iface_line:
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iface_string = iface_line.split('@')
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ifaces = iface_string[0].split(' ')
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subprocess.call(['ip', 'link', 'set', 'dev', ifaces[1],
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'multicast', 'on', 'allmulticast', 'on'])
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if action != "release":
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return
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if not console_log_exists(guest_name):
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return
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new_path = move_console_log(guest_name)
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if not new_path:
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return
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no_ansi_filename = "{}_no_ansi_{}.log".format(guest_name, NOW)
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no_ansi_path = os.path.join(VM_LOG_DIR, no_ansi_filename)
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create_no_ansi_file(new_path, no_ansi_path)
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def create_no_ansi_file(source_filename, dest_filename):
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with open(source_filename) as in_file:
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data = in_file.read()
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data = remove_ansi_codes(data)
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with open(dest_filename, 'w') as out_file:
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out_file.write(data)
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def get_console_log_path(guest_name):
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logfile_name = "{}_console.log".format(guest_name)
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return os.path.join(VM_LOG_DIR, logfile_name)
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def console_log_exists(guest_name):
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return os.path.isfile(get_console_log_path(guest_name))
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def move_console_log(guest_name):
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new_logfile_name = "{}_console_{}.log".format(guest_name, NOW)
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new_path = os.path.join(VM_LOG_DIR, new_logfile_name)
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if os.path.exists(new_path):
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return False
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os.rename(get_console_log_path(guest_name), new_path)
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return new_path
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def remove_ansi_codes(data):
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"""Remove any ansi codes from the provided string"""
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output = ''
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while data:
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result = ANSI_ESCAPE_RE.match(data)
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if not result:
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output += data[0]
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data = data[1:]
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else:
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data = data[result.end():]
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return output
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if '__main__' == __name__:
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sys.exit(main())
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