[ZODB-Dev] Massive LockError: Couldn't lock....check_size.lock messages

[Andreas Jung]

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Hi there,

we have a Plone 4.2 setup running ZEO with 3 application servers
and a non-shared blob setup, ZODB3-3.10.5-py2.7-linux-i686

We see massive amounts of the following error message on every
application server. The application servers are configured
to use a local blob-cache directory. We tried to tune the blob
cache size (even down to zero) but without success.

Any idea about this issue?

Andreas

2014-04-15T15:24:34 ERROR zc.lockfile Error locking file
/srv/gehirn/dasgehirn_buildout/var/blobstorage.cache/check_size.lock;
pid=25381
Traceback (most recent call last):
  File
"/srv/gehirn/dasgehirn_buildout/eggs/zc.lockfile-1.0.2-py2.7.egg/zc/lockfile/__init__.py",
line 84, in __init__
    _lock_file(fp)
  File
"/srv/gehirn/dasgehirn_buildout/eggs/zc.lockfile-1.0.2-py2.7.egg/zc/lockfile/__init__.py",
line 59, in _lock_file
    raise LockError("Couldn't lock %r" % file.name)
LockError: Couldn't lock
'/srv/gehirn/dasgehirn_buildout/var/blobstorage.cache/check_size.lock'
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