RE: [Zope-dev] Sporadic IOErrors...?

7 Apr 2003


      Thanks Shane.

This sounds very plausible.  I seem to recall that we started it in
debug mode, then disowned the process and exited.  That probably caused
debug to stdout to create this kind of error.  Now we should be able to
find the underlying error that caused it to try to write the error to
the first place. :)
...
-----Original Message-----
From: Shane Hathaway [mailto:shane@zope.com] 
Sent: Friday, April 04, 2003 23:41
To: Bjorn Stabell
Cc: zope-dev@zope.org
Subject: Re: [Zope-dev] Sporadic IOErrors...?
Bjorn Stabell wrote:
...
Hi Zope gurus,
After upgrading to Zope 2.6.1 on Linux, when submitting forms, we 
sometimes get this error:
Site Error
    ...
    exceptions.IOError
    ...
    Traceback:
  Module ZPublisher.Publish, line 150, in publish_module
  Module ZPublisher.Publish, line 114, in publish
  Module Zope.App.startup, line 149, in zpublisher_exception_hook
  Module Products.SiteErrorLog.SiteErrorLog, line 195, in raising
  Module Products.SiteErrorLog.SiteErrorLog, line 206, in
  _do_copy_to_zlog
  Module zLOG, line 130, in LOG
  Module ZLogger.ZLogger, line 16, in log_write
  Module ZLogger.stupidFileLogger, line 27, in __call__
  Module ZLogger.stupidFileLogger, line 90, in stupid_log_write
  IOError: [Errno 5] Input/output error
  ...
It's terrible hard to debug as it happens sporadically, not 
consistently, and we don't get any more debug info than this.  Even 
worse, we have a standard-error-message that emails errors 
to us, but 
it fails to do anything in this case.  Any ideas what could 
be wrong 
and how to troubleshoot better?  The disks have plenty of 
free space; 
after restarting, or waiting a while, things work again.
This usually means Python is trying to write to stdout or stderr and 
failing because stdout/stderr don't go anywhere.  Make sure 
you have a 
log file configured (using the EVENT_LOG_FILE environment variable, 
rather than the old STUPID_LOG_FILE).
Shane