Thread: Linux: NFS4 client unable to mount share

NFS server

Code:

[root@nfs3 ~]# service portmap status
portmap (pid 4848) is running...
[root@nfs3 ~]# service nfs status
rpc.mountd (pid 4820) is running...
nfsd (pid 4817 4816 4815 4814 4813 4812 4811 4810) is running...
rpc.rquotad (pid 4805) is running...
[root@nfs3 ~]#

Client:

Code:

[root@static ~]# service portmap status
portmap (pid 3723) is running...

Showmount output:

Code:

[root@static ~]# showmount -e 192.168.0.81
Export list for 192.168.0.81:
/home/webuser/images 192.168.0.0/24

Rpcinfooutput:

Code:

[root@static ~]# rpcinfo -p 192.168.0.81
rpcinfo: can't contact portmapper: RPC: Remote system error - Connection timed out

NFS server iptables:

Code:

[root@nfs3 images]# service iptables status
Firewall is stopped.

TCPdump output:

Code:

[root@static ~]# tcpdump -n -s0 host 192.168.0.81
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes

Both client and server NIC speed is 1000Mbps.

Also I don't mix nfs3 and nfs4... nfs3 it's only a hostname but it's only running nfs4 service.

I tried to telnet from client to port 2049 it was successfull... so port is no issue...

anyone?...

bump.... need badly help...

rpcinfo -p 192.168.0.81 is not providing correct output. Make sure portmap service is running on both client and server and no firewall (including /etc/hosts.deny or /etc/hosts.allow) blocking access to portmap.

Originally Posted by raj

rpcinfo -p 192.168.0.81 is not providing correct output. Make sure portmap service is running on both client and server and no firewall (including /etc/hosts.deny or /etc/hosts.allow) blocking access to portmap.

Today I just setup another machine... just to make sure I have fresh NFS server. stop both client and server iptables. I've also change ip of server...

Check both client portmap is running...

on client I tried again.

[root@static ~]# rpcinfo -p 192.168.0.200
rpcinfo: can't contact portmapper: RPC: Remote system error - Connection timed out

same issue... I've google for solution apply it same issue no lock... I tried to telnet from client to port 2049 and 111 it's working fine I can telnet.

Now banging my head on the wall could not think anymore what was causing the problem...

Ok finally mount my client on nfs4 server with some testing I make...

mount -t nfs4 -o hard,intr,proto=udp,port=2049,acregmin=24,acregmax =240,acdirmin=240,acdirmax=240,rsize=32768,wsize=3 2768,intr 192.168.0.200:/ /home/webuser/uploads

when I set proto=tcp client can mount on nfs server but on udp there is no problem...

how can I mount on tcp protocol?

ok I think I'm having issue with 2049:tcp port client is not connecting on this port, how can I change nfs server port?

Hey you know what, as far as I can see, you are not working in a production environment. Am I right?

To determine if the issue is happening because of the firewall or not, use the following command on the NFS server and the try to mount the share on the client. See if that works:

PHP Code:

iptables -F 


Now, if this works, that means you have to take a deeper look at your iptables script.

Check the open ports on the server by issuing any of the following commands:

PHP Code:

lsof -i -n -P
nmap localhost 


As far as I have seen from your post, you have not mentioned configuration in the /etc/sysconfig/nfs file. Make sure you have un-commented the following lines:

PHP Code:

RQUOTAD_PORT=875
LOCKD_TCPPORT=32803
LOCKD_UDPPORT=32769
MOUNTD_PORT=892
STATD_PORT=662
STATD_OUTGOING_PORT=2020 


After that, you have open the same ports (tcp and udp both) using the /etc/sysconfig/iptables file or your custom iptables script, whatever you are using.

This should work without any hiccup.

Please do post if you get success, if not, I'm always glad to help you out!

Originally Posted by xoroot

Hey you know what, as far as I can see, you are not working in a production environment. Am I right?

To determine if the issue is happening because of the firewall or not, use the following command on the NFS server and the try to mount the share on the client. See if that works:

PHP Code:

iptables -F 


Now, if this works, that means you have to take a deeper look at your iptables script.

Check the open ports on the server by issuing any of the following commands:

PHP Code:

lsof -i -n -P
nmap localhost 


As far as I have seen from your post, you have not mentioned configuration in the /etc/sysconfig/nfs file. Make sure you have un-commented the following lines:

PHP Code:

RQUOTAD_PORT=875
LOCKD_TCPPORT=32803
LOCKD_UDPPORT=32769
MOUNTD_PORT=892
STATD_PORT=662
STATD_OUTGOING_PORT=2020 


After that, you have open the same ports (tcp and udp both) using the /etc/sysconfig/iptables file or your custom iptables script, whatever you are using.

This should work without any hiccup.

Please do post if you get success, if not, I'm always glad to help you out!

Thanks for your response, your right /etc/sysconfig/nfs is not yet uncommented. I havent test it all my nfs server is on production right now do I need to restart nfs server to apply the new config?