Why cp does not respect nfsv4 acls though touch does?

Solution Verified - Updated -

Issue

  • As illustrated below cp does not preserve attributes and thus does not adhere to the nfv4 ACLs, but touch does.
[root@iscsi-storage test]# touch a
[root@iscsi-storage test]# setfacl -m u:root:rwx a
[root@iscsi-storage a]# nfs4_getfacl a
D::OWNER@:x
A::OWNER@:rwatTcCy
A::root@localdomain:rwaxtcy
A::GROUP@:rtcy
A::EVERYONE@:rtcy
[root@iscsi-storage a]# cp a b
[root@iscsi-storage a]# nfs4_getfacl b
D::OWNER@:x
A::OWNER@:rwatTcCy
A::GROUP@:rxtcy
A::EVERYONE@:rtcy
[root@iscsi-storage a]# ls -lrth
total 4.0K
-rw-rwxr--. 1 root root 0 Apr 22 07:35 a
-rw-r-xr--. 1 root root 0 Apr 22 07:37 b

Environment

  • Red Hat Enterprise Linux 6.2
  • NFSv4 Client

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