Hi, In the glusterfs FAQ(http://www.gluster.org/docs/index.php/GlusterFS_FAQ) it says that glusterfs is fully POSIX compliant. I think this can be quite misleading because I think for example that read-write mmap is only supported on very recent linux kernels. POSIX locks also only work when using the locks translator. I think a simple note should be added to point out these and possible other things which are necessary to make glusterfs POSIX compliant. This might help quite a few people who are for example migrating from NFS to glusterFS and scratching their heads trying to understand why some programs don't work anymore. Filipe