Persistent ZEO Cache considered harmful?

My blog was down during my vacation. The box it’s hosted on was
restarted and the Persistent ZEO Cache got corrupted somehow. Here’s a
nice traceback:

File "/home/sidnei/src/zope/28five/lib/python/Zope2/__init__.py",
line 47, in startup
  _startup()
File "/home/sidnei/src/zope/28five/lib/python/Zope2/App/startup.py",
line 56, in startup
  DB = configuration.dbtab.getDatabase('/', is_root=1)
File "/home/sidnei/src/zope/28five/lib/python/DBTab/DBTab.py", line
96, in getDatabase
  db = self._createDatabase(name, is_root)
File "/home/sidnei/src/zope/28five/lib/python/DBTab/DBTab.py", line
113, in _createDatabase
  db = factory.open()
File
"/home/sidnei/src/zope/28five/lib/python/Zope2/Startup/datatypes.py",
line 163, in open
  DB = self.createDB()
File
"/home/sidnei/src/zope/28five/lib/python/Zope2/Startup/datatypes.py",
line 160, in createDB
  return ZODBDatabase.open(self)
File "/home/sidnei/src/zope/28five/lib/python/ZODB/config.py", line
97, in open
  storage = section.storage.open()
File "/home/sidnei/src/zope/28five/lib/python/ZODB/config.py", line
153, in open
  read_only_fallback=self.config.read_only_fallback)
File "/home/sidnei/src/zope/28five/lib/python/ZEO/ClientStorage.py",
line 314, in __init__
  self._cache.open()
File "/home/sidnei/src/zope/28five/lib/python/ZEO/cache.py", line
112, in open    self.fc.scan(self.install)
File "/home/sidnei/src/zope/28five/lib/python/ZEO/cache.py", line
835, in scan    install(self.f, ent)
File "/home/sidnei/src/zope/28five/lib/python/ZEO/cache.py", line
121, in install
  o = Object.fromFile(f, ent.key, skip_data=True)
File "/home/sidnei/src/zope/28five/lib/python/ZEO/cache.py", line
630, in fromFile
  raise ValueError("corrupted record, oid")
ValueError: corrupted record, oid

Not the first time I see a site failing to start because of the
Persistent ZEO Cache. Will see if Tim Peters is interested in digging
this one.

Advertisements

One thought on “Persistent ZEO Cache considered harmful?

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s