Both nfs client and server are redhat enterprise linux. there is not firewall between the servers.
The nfs server has the right shares and data in /etc/exports. all the services are up and running. portmap rpcbind, nfsd. when attempting to mount the nfs share nothing happens. I have tried to sniff the traffic with tcpdump and i get data when executing from client:
showmounts -e < nfs server>
rpcinfo -p <nfs server>
this is the output of rpcinfo -p <nfs_server>
program vers proto port service
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 52430 status
100024 1 tcp 37923 status
100005 1 udp 20048 mountd
100005 1 tcp 20048 mountd
100005 2 udp 20048 mountd
100005 2 tcp 20048 mountd
100005 3 udp 20048 mountd
100005 3 tcp 20048 mountd
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100227 3 tcp 2049 nfs_acl
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100227 3 udp 2049 nfs_acl
100021 1 udp 49706 nlockmgr
100021 3 udp 49706 nlockmgr
100021 4 udp 49706 nlockmgr
100021 1 tcp 38046 nlockmgr
100021 3 tcp 38046 nlockmgr
100021 4 tcp 38046 nlockmgr
I can see the shares in the showmount -e
output.
telnet port 111 and 2049 work fine connection is possible.
but when attempting to mount there is nothing going in the network.. zero packages are transmitted
mount -t nfs example:/share /app/shared -o _netdev,rw,async,vers=4 -vvvv