tools/xenserver: Remove 'cleanup_sm_locks'

XenServer 6.0 has long since been replaced and the bug was fixed in 6.1
[1]. No need to keep this legacy script around.

[1] https://bugs.launchpad.net/nova/+bug/1103158/comments/1

Change-Id: I8c41e88281aaf4250859622142a2f03f4452e1be

tools/xenserver/cleanup_sm_locks.py

@@ -1,123 +0,0 @@
-#!/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):
-        sys.stderr.write("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:
-                        sys.stderr.write("warning: directory '%s'"\
-                                         " not empty" % nspath)
-                    else:
-                        raise
-
-    if options.dry_run:
-        print("** Dry Run **")
-
-    print("Total locks removed: %d" % lockpaths_removed)
-    print("Total namespaces removed: %d" % nspaths_removed)
-
-
-if __name__ == '__main__':
-    main()