TYPO3 Core

Hi Jeroen,

did you find any solution for this? From time to time i get this error in multiserver deployments with a shared var directory for a v11 instance.
I could not yet move the var dir to the instances themselves, this caused other problems :/ Any hint on how to solve this would be very welcome!

In v11 the line that causes the error looks like this:

return file_exists($pathAndFilename) ? require_once $pathAndFilename : false;

I suspect that file_exists returns a result from the nfs cache, while require_once actually tries to read it and then fails. There may be different ways to tackle this:
a) tune your nfs settings to disable / reduce attribute caching which will very likely hurt performance
b) patch the ContainerBackend (which inherits from SimpleFileBackend) and flush the stat cache before the require_once / file_exists (or maybe mute the error, check if the class that is supposed to be in the require_once file actually exists, if not return false?)
c) disable sharing the var/cache dir

I went with option c, hope that it all works out. Flushing the system cache will not work afterwards!