124 lines
3.8 KiB
Python
Executable File
124 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
# Copyright 2013 OpenStack Foundation
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
"""
|
|
Script to cleanup old XenServer /var/lock/sm locks.
|
|
|
|
XenServer 5.6 and 6.0 do not appear to always cleanup locks when using a
|
|
FileSR. ext3 has a limit of 32K inode links, so when we have 32K-2 (31998)
|
|
locks laying around, builds will begin to fail because we can't create any
|
|
additional locks. This cleanup script is something we can run periodically as
|
|
a stop-gap measure until this is fixed upstream.
|
|
|
|
This script should be run on the dom0 of the affected machine.
|
|
"""
|
|
import errno
|
|
import optparse
|
|
import os
|
|
import sys
|
|
import time
|
|
|
|
BASE = '/var/lock/sm'
|
|
|
|
|
|
def _get_age_days(secs):
|
|
return float(time.time() - secs) / 86400
|
|
|
|
|
|
def _parse_args():
|
|
parser = optparse.OptionParser()
|
|
parser.add_option("-d", "--dry-run",
|
|
action="store_true", dest="dry_run", default=False,
|
|
help="don't actually remove locks")
|
|
parser.add_option("-l", "--limit",
|
|
action="store", type='int', dest="limit",
|
|
default=sys.maxint,
|
|
help="max number of locks to delete (default: no limit)")
|
|
parser.add_option("-v", "--verbose",
|
|
action="store_true", dest="verbose", default=False,
|
|
help="don't print status messages to stdout")
|
|
|
|
options, args = parser.parse_args()
|
|
|
|
try:
|
|
days_old = int(args[0])
|
|
except (IndexError, ValueError):
|
|
parser.print_help()
|
|
sys.exit(1)
|
|
|
|
return options, days_old
|
|
|
|
|
|
def main():
|
|
options, days_old = _parse_args()
|
|
|
|
if not os.path.exists(BASE):
|
|
print >> sys.stderr, "error: '%s' doesn't exist. Make sure you're"\
|
|
" running this on the dom0." % BASE
|
|
sys.exit(1)
|
|
|
|
lockpaths_removed = 0
|
|
nspaths_removed = 0
|
|
|
|
for nsname in os.listdir(BASE)[:options.limit]:
|
|
nspath = os.path.join(BASE, nsname)
|
|
|
|
if not os.path.isdir(nspath):
|
|
continue
|
|
|
|
# Remove old lockfiles
|
|
removed = 0
|
|
locknames = os.listdir(nspath)
|
|
for lockname in locknames:
|
|
lockpath = os.path.join(nspath, lockname)
|
|
lock_age_days = _get_age_days(os.path.getmtime(lockpath))
|
|
if lock_age_days > days_old:
|
|
lockpaths_removed += 1
|
|
removed += 1
|
|
|
|
if options.verbose:
|
|
print 'Removing old lock: %03d %s' % (lock_age_days,
|
|
lockpath)
|
|
|
|
if not options.dry_run:
|
|
os.unlink(lockpath)
|
|
|
|
# Remove empty namespace paths
|
|
if len(locknames) == removed:
|
|
nspaths_removed += 1
|
|
|
|
if options.verbose:
|
|
print 'Removing empty namespace: %s' % nspath
|
|
|
|
if not options.dry_run:
|
|
try:
|
|
os.rmdir(nspath)
|
|
except OSError, e:
|
|
if e.errno == errno.ENOTEMPTY:
|
|
print >> sys.stderr, "warning: directory '%s'"\
|
|
" not empty" % nspath
|
|
else:
|
|
raise
|
|
|
|
if options.dry_run:
|
|
print "** Dry Run **"
|
|
|
|
print "Total locks removed: ", lockpaths_removed
|
|
print "Total namespaces removed: ", nspaths_removed
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|