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Full Discussion: Migrating NFSv3 to NFSv4 in AIX
Operating Systems AIX Migrating NFSv3 to NFSv4 in AIX Post 303005390 by System Admin 77 on Tuesday 17th of October 2017 05:56:30 PM
Old 10-17-2017
Thanks for your time and explanation.

Actually I did used NFSv4 earlier. Do not know I miss something here.


unmounted nfsv3 share on a client.

Just now, I've modified the "/etc/exports" with vers=4 and exported it again on server. Stopped and restarted all the nfs daemons.

restarted nfs daemons on test client machine.
Tried mounting on client,

Code:
Command: OK            stdout: yes           stderr: no

Before command completion, additional instructions may appear below.

mount: 1831-010 server nfsserver not responding: RPC: 1832-015 Remote system error - A remote host refused an attempted connect operation.
mount: backgrounding
nfserver:/nfsv4share/test

---------- Post updated at 03:28 PM ---------- Previous update was at 02:56 PM ----------

Never mind. Its working now for NFSv3. Actually I restarted only 2 daemons(nfsd, nfsrgyd) on server.

Now I've restarted all the NFS daemons. Good with NFSv3.


I cleaned /etc/rmtab and /etc/xtab.

Now the share is exported with NFSv4 only.

domain has set on NFS server and client.


tried mounting, received below error.
Code:
                                                                        COMMAND STATUS

Command: failed        stdout: yes           stderr: no

Before command completion, additional instructions may appear below.

mount: 1831-011 access denied for nfsserver:/admclaim/sandrt
mount: 1831-008 giving up on:
nfsserver:/nfsv4share/test
The file access permissions do not allow the specified action.

Found a IBM link, looking in to it.

IBM How to troubleshoot NFS mounting problems


---------- Post updated at 03:45 PM ---------- Previous update was at 03:28 PM ----------

Tried checking IP and hostname etc as shown in the link. I believe this is something different, that only occurs on NFSv4 ?

Please suggest. Thank you.

---------- Post updated at 05:56 PM ---------- Previous update was at 03:45 PM ----------

I've tried mounting using smitty (just like NFSv3). It did not work.

then I ran below command on client, it worked. As per the Redook, I should be able to use same smitty mount options for NFSv4 as well. Correct me If am wrong.

Code:
mount -o vers=4 nfsserver:/nfsshare/test /mnt


How do I verify whether my client is using NFSv4.


because I still see mountd and lockd daemons.

Code:
>rpcinfo -p
   program vers proto   port  service
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100003    2   udp   2049  nfs
    100003    3   udp   2049  nfs
    100003    2   tcp   2049  nfs
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    200006    1   udp   2049
    200006    4   udp   2049
    200006    1   tcp   2049
    200006    4   tcp   2049
    100005    1   tcp  36732  mountd
    100005    2   tcp  36732  mountd
    100005    3   tcp  36732  mountd
    100005    1   udp  61488  mountd
    100005    2   udp  61488  mountd
    100005    3   udp  61488  mountd
    400005    1   udp  61489
    100024    1   tcp  36733  status
    100024    1   udp  61493  status
    100133    1   tcp  36733
    100133    1   udp  61493
    200001    1   tcp  36733
    200001    1   udp  61493
    200001    2   tcp  36733
    200001    2   udp  61493
    100021    1   udp  61571  nlockmgr
    100021    2   udp  61571  nlockmgr
    100021    3   udp  61571  nlockmgr
    100021    4   udp  61571  nlockmgr
    100021    1   tcp  36755  nlockmgr
    100021    2   tcp  36755  nlockmgr
    100021    3   tcp  36755  nlockmgr
    100021    4   tcp  36755  nlockmgr
    400003    1   udp  62548

Please let me know If there's a way to find out running NFS share version.

Thank you
 

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