Known Issues

Slow Performance with a Very Large File Descriptor Limit

Before CernVM-FS 2.11, having the file descriptor limit set to a very large number will result in a very slow cvmfs performance in certain situations. This is due to certain operations looping over all possible file descriptors, instead of just the used/opened ones. This issue is resolved in CernVM-FS 2.11.

Publisher nodes with AUFS and XFS

If the /tmp file system is on xfs, the publisher node cannot be used with AUFS. On such systems, adding the mount option xino=/dev/shm/aufs.xino can be a workaround. In general, new repositories should use OverlayFS if available.