v2.7.4 running on Linux - I'm trying to use this (custom_zodb.py in INSTANCE_HOME) --------------------------------------------------------- import os import ZODB.FileStorage import ZODB.DB filename = os.path.join(INSTANCE_HOME, 'var', 'Data.fs') Storage = ZODB.FileStorage.FileStorage(filename) DB = ZODB.DB(Storage, pool_size=10) ----------------------------------------------------------- When I do it, zope does start up and run, but I get IOError every time I try to look at the "main" storage in Control_Panel->Database: Traceback (most recent call last): File "<string>", line 1, in ? File "/home/zope/Zope-2.7.4-0/lib/python/Zope/__init__.py", line 51, in app startup() File "/home/zope/Zope-2.7.4-0/lib/python/Zope/__init__.py", line 47, in startu p _startup() File "/home/zope/Zope-2.7.4-0/lib/python/Zope/App/startup.py", line 57, in sta rtup DB = configuration.dbtab.getDatabase('/', is_root=1) File "/home/zope/Zope-2.7.4-0/lib/python/DBTab/DBTab.py", line 96, in getDatab ase db = self._createDatabase(name, is_root) File "/home/zope/Zope-2.7.4-0/lib/python/DBTab/DBTab.py", line 113, in _create Database db = factory.open() File "/home/zope/Zope-2.7.4-0/lib/python/Zope/Startup/datatypes.py", line 172, in open DB = self.createDB() File "/home/zope/Zope-2.7.4-0/lib/python/Zope/Startup/datatypes.py", line 169, in createDB return ZODBDatabase.open(self) File "/home/zope/Zope-2.7.4-0/lib/python/ZODB/config.py", line 97, in open return ZODB.DB(section.storage.open(), File "/home/zope/Zope-2.7.4-0/lib/python/ZODB/config.py", line 128, in open quota=self.config.quota) File "/home/zope/Zope-2.7.4-0/lib/python/ZODB/FileStorage.py", line 232, in __ init__ self._lock_file = LockFile(file_name + '.lock') File "/home/zope/Zope-2.7.4-0/lib/python/ZODB/lock_file.py", line 62, in __ini t__ lock_file(self._fp) File "/home/zope/Zope-2.7.4-0/lib/python/ZODB/lock_file.py", line 42, in lock_ file fcntl.flock(file.fileno(), _flags) IOError: [Errno 11] Resource temporarily unavailable If I remove the custom_zodb.py file, the problem goes away. Why is the file locked to the ZMI when I use custom_zodb.py?