how to chek nfs server is service correctly

[file system]

Hi all
I have been having problem.
We have storage for NFS, but we have hang from nfs client several times.
which causes for the problem.

1).I want to check the nfs server is ok.
2). nfs client is Ok.

how to guarantee the nfs services on server and client.

3). I wonder if network swtich is connected correctly.

4) how to setup high performance tuning nfs client, server, switch

[Hemmetter · Accepted solution]

hi

1) on the server check:
# rpcinfo -p localhost
# showmount -e
# nfsstat -s

2) on the clilent check:
# rpcinfo -p NFSSERVER
# showmount -e NFSSERVER
# nfsstat -c

3) on client + server check network settings:
# ethtool ethX
# netstat -s | egrep -i "error|fail|inval|retrans"

4a) use NFS-over-TCP because some network devices prioritize tcp traffic over udp. And in a high traffic situation udp may be limited in bandwidth by preference tcp.

4b) if possible run nfs over a separate (private) lan apart from the public lan.

rgds
HGH

[Alexander Chuzhoy]

Just to clarify that rpcinfo and showmount reside in /usr/sbin (in case you try to execute them not as root).

For optimizations:
http://nfs.sourceforge.net/nfs-howto/ar01s05.html

[George Liu_4]

1).I want to check the nfs server is ok.
rpcinfo -p nfs_server

2). nfs client is Ok.
df any_nfs_mount_pioint

how to guarantee the nfs services on server and client.

Using 1) & 2)

3). I wonder if network swtich is connected correctly.
Neyond nfs question. It is network question

4) how to setup high performance tuning nfs client, server, switch

All depend on what server is and client is.