"Currently, the filesystems that support NFSv4 ACL in
IBM AIX 5L version 5.3 and above are NFSv4, JFS2 with EAv2
(Extended Journaled Filesystem with Extended Attributes format
version 2), and General Parallel Filesystem (GPFS). In Sun Solaris,
this ACL model is supported by ZFS. In RedHat Linux, NFSv4 supports
"What is an ACL?
"An Access Control List (ACL) is used to specify access
permissions to filesystem objects, like files and directories. Is a
list of many Access Control Entries (ACEs), in which each entry
defines a user or a group, and different permissions to each of
"About ZFS ACLs
"ZFS file system, introduced by Sun, is available in the Solaris
10 OS pack.
"ZFS supports the NFSv4 ACL model, and has implemented the
commands in the form of new options to the existing ls and chmod
commands. Thus, the ACLs can be set and displayed using the chmod
and ls commands; no new command has been introduced. Because of
this, it is very easy to work with ACLs in ZFS."