Originally posted by: victorkwan

Hi all,

I'm new to AIX. Hope i can get some help or direction to resolve this problem.
Has yet to get much from google. :(

I am trying to export a partition through NFS.
I am able to mount the partition from another LPAR on AIX 6.1 but unable to mount the same from either Solaris 10 or Redhat 4.
I have also tried to mount a partition exported from Solaris or Redhat to AIX and unable to mount the partition too.

On the AIX 6.1 LPAR, i have the exports entry allowing NFS 2 / 3 / 4.

root@devsvr:> more /etc/exports /mypartition -vers=2:3:4 -sec=sys:dh,ro=client1:client2,root=client1:client2

NFS processes on AIX LPAR

root@devsvr:> lssrc -a | grep -i nfs biod             nfs              3670138      active nfsd             nfs              3539068      active rpc.mountd       nfs              4194436      active rpc.statd        nfs              4522182      active rpc.lockd        nfs              4653240      active nfsrgyd          nfs                           inoperative gssd             nfs                           inoperative

Entry is added to /etc/hosts on AIX LPAR

root@devsvr:/opt/psa/rel> grep client1 /etc/hosts 10.55.9.192     client1

On the Solaris / Redhat box,

root@client1:/>#uname -a SunOS client1 5.10 Generic_142900-03 sun4u sparc SUNW,Sun-Fire-V240   root@client1:/>#ps -aef | grep nfs daemon 28123     1   0   Jun 29 ?           0:00 /usr/lib/nfs/nfs4cbd daemon 28125     1   0   Jun 29 ?           0:05 /usr/lib/nfs/nfsmapid root 28733  2951   0 16:30:11 pts/32      0:00 grep nfs daemon 28137     1   0   Jun 29 ?           0:00 /usr/lib/nfs/lockd daemon 28126     1   0   Jun 29 ?           0:00 /usr/lib/nfs/statd

The following command just hang there.

mount -F nfs -o vers=3 devsvr:/mypartition /mnt

showmount on solaris box shows RPC time out

root@client1:/>#showmount -a 10.106.50.14 showmount: 10.106.50.14: RPC: Rpcbind failure - RPC: Timed out

Entry is already in /etc/hosts

root@client1:/>#getent hosts devsvr 10.106.50.14    devsvr

TIA for kind souls out there.

Regards,
Victor
#AIX-Forum

Originally posted by: victorkwan

no gurus able to help me?
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Originally posted by: SystemAdmin

Wow, you gave a FREE internet forum just less than two hours before it let you down. Way to be patient. Also, everyone here is not a "guru" on AIX and they aren't all just waiting around to answer random internet questions from lazy admins.

So far you have no proof that the two systems talk at all. Its possible at this point that the issue lays outside your hosts.

Go to http://www.redbooks.ibm.com, search for NFS and get some more info.
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Originally posted by: victorkwan

@kruzelc77:
Thanks for the feedback. If you would notice, I waited one week, not 2 hours.
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Originally posted by: victorkwan

I'm getting "Disallowed content detected" error hence unable to post more details until i figure this error out.
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Originally posted by: victorkwan

I try to attach the details.

I'm only like 3 months into AIX. Would anyone be kind enough to advice? Thanks.
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Originally posted by: flodstrom

Well, it can be a number of things, but of what I see your local network looks a bit suspicious. Remember that NFS can be very sensitive to inconsistencies in network settings and name resolution.

I guess you don't have a DNS or some other simpler central name resolution like NIS? If you don't have that then I would advice you to go through and verify the network settings and name resolution on both clients and servers.

One thing about AIX! In case you are new to it and not familiar with the way of AIX then keep the following things in mind. Be carefull with to much manual editing of settings and other various OS configurations. You can actually put various things into unknown and uncertain states if not done correctly. Always do this through smitty if you are unsure! NFS configuration included!

As for NFS. I would skip both version 2 and 4 to start with. Focus to get version 3 to work first.

On the AIX server what do you get from the following two commands (was devsvr the hostname? If not replace devsvr with the correct hostname)?

showmount -e localhost
showmount -e devsvr

On the clients run the same command to probe the server.

showmount -e devsrv
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Originally posted by: victorkwan

Thanks for the recommendations flodstrom.

I have put back the original names of the servers.

gw2 is the NFS client (SUN)
app3 is the NFS server (AIX).
app2 is another NFS client (AIX).

app2 is currently able to mount the shared directories.

name resolution is using the following prirority "files dns"

root@gw2:/>#grep hosts /etc/nsswitch.conf | grep -v 
"#" hosts:      files dns

I have reconfigure /opt to be shared only by NFS version 3 using smitty.

root@dev3:/> exportfs /opt/data/rw -sec=sys:krb5p:krb5i:krb5:dh,rw,root=dev2 /opt/rel     -sec=sys:krb5p:krb5i:krb5:dh,ro=app2,root=dev2 /opt             -vers=3,sec=sys:dh,ro

root@gw2:/>#mount -F nfs -o vers=3  dev3:/opt /mnt ^C

The commands output as follows

root@app3:/> showmount -e localhost export list 

for localhost: /opt/data/rw (everyone) /opt/rel     (everyone) /opt         (everyone)

root@app3:/> showmount -e app3 export list 

for app3: /opt/data/rw (everyone) /opt/rel     (everyone) /opt         (everyone)

no respond from the SUN client

root@gw2:/>#showmount -e app3 ^C

root@gw2:/>#showmount -e 10.106.50.14 ^C

i have expanded to using another SUN server to try to determine the issue. In below SUN servers, i have problem as well. I will try to ask the pre-sale consultant to help, if he's willing. :)

root@zion:/>mount -F nfs -o vers=3 10.106.50.14:/opt /mnt nfs mount: 10.106.50.14:/opt: Unknown error   root@zion:/>uname -sr SunOS 5.9   myname@zion [~] ~$showmount -e 10.106.50.14 export list 

for 10.106.50.14: /opt/data/rw (everyone) /opt/rel     (everyone) /opt         (everyone)

#AIX-Forum

Originally posted by: flodstrom

What are the hostnames dev2 and dev3? Are they the same as app2 and app3? Again be careful with inconsistencies in name resolution.

Does the name resolution work both ways?

On the Solaris client:

ping -s app3

On the AIX server:

ping gw2

And to be sure all is OK repeat using the IP addresses.
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Originally posted by: victorkwan

Thanks flodstrom. You have been patient with me.

I have found 2 problems.

1) i have missed out that firewall rule only allowed some basic traffic like SSH / HTTP(S) / MAIL, etc only. NFS has not been allowed. sorry for this one.

2) It is silly of me for not noticing that AIX NFS implementation requires the list of client to be explicitly allowed to access the NFS on the AIX server. The IBM pre-sales consultant pointed this out. i learned something new now.

I have rectified the firewall rule and now i am able to mount the shared partition from AIX server. Thanks.

gw2:
"/"#df -k | grep 10.106 10.106.50.14:/opt     393216  288060  105156    74%    /mnt

regards,
Victor
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