ACL not working when NFS Server and Client is same machine

[Dhananjaya Amarakoon]

We have two Rx7620 servers that are running HP-UX 11.23. These servers are wbscsp01 and wbscsp02.
Space is presented to each server from XP128. In wbscsp02 there are two mount points call bscs1 and bscs1/WORK1

/dev/vgbscs01/lvol1 50057216 27934211 20758630 57% /bscs1
/dev/vgbscs01/lvol2 134766592 129157006 5609586 96% /bscs1/WORK1
Same server (wbscsp02) above two mount points are shared by NFS and mounted to /bscs and /bscs/WORK

192.168.1.3:/bscs1 50057216 27933320 20759465 57% /bscs
192.168.1.3:/bscs1/WORK1
134766592 129157036 5609556 96% /bscs/WORK

Actually in the wbscsp02 server also, application users works in this /bscs and /bscs/WORK locations not the bscs1 and /bscs1/WORK1

In the wbscsp01 server also access this NFS shared /bscs1 and /bscs1/WORK1 (in wbscsp02) through /bscs and /bscs/WORK mount points.

192.168.1.3:/bscs1 50057216 27933376 20759416 57% /bscs
192.168.1.3:/bscs1/WORK1
134766592 129166408 5600184 96% /bscs/WORK


Recently I got the requirement to create some ACL to files under NFS environment.
For the example I have done it following way
I create a file under /bscs1 mount point in wbscsp02 server

-rw-r--r-- 1 bscsprod bscsprod 34 Jan 21 10:57 acltest3

Has given write and read access to above file for dhaj user.

$ getacl acltest3
# file: acltest3
# owner: bscsprod
# group: bscsprod
user::rw-
user:dhaj:rw-
group::r--
class:rw-
other:r—

-rw-rw-r--+ 1 bscsprod bscsprod 0 Jan 21 15:37 acltest3

When I access this file from the wbscsp01 server (NFS client) as expected ACL working fine. (Login from the dhaj user and both servers uid of the dhaj is 126)



Wbscsp01
$ hostname
$ wbscsp01
$ whoami
dhaj
$ pwd
$ /bscs
$ ll acltest3
-rw-rw-r-- 1 bscsprod bscsprod 0 Jan 21 15:37 acltest3
$ touch acltest3
$ ll acltest3
-rw-rw-r-- 1 bscsprod bscsprod 0 Jan 21 16:33 acltest3


But my problem is when I access this file from wbscsp02 server ( where NFS server and client both running), It doesn’t give allow to edit or change

$ hostname
wbscsp02
$ whoami
dhaj
$ pwd
/bscs
$ ll acltest3
-rw-rw-r-- 1 bscsprod bscsprod 0 Jan 21 16:33 acltest3
$ touch acltest3
touch: cannot change times on acltest3
$


It is appreciate if you can able to give me some solution to above reason and why is it not possible to access when NFS client also in the NFS Server?

Thanks & Regards
Dhananjaya Amarakoon