Steps to reproduce (run getfacl on a directory or file located on an XFS fs): > getfacl / getfacl: /: Invalid argument The problem is that XFS now returns EINVAL when passed in an attribute it doesn't recognize where as in 2.6.26 and earlier it used to return EOPNOTSUPP and acl_get_file does not handle this. This change is caused by http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=commit;h=0ec585163ac81e329bde25fb6311a043a1c63952
we've dropped the USE=acl flag in bug 379865