How to check connected NFS clients to NFS server ?

https://access.redhat.com/solutions/661613

 

 SOLUTION 已验证 - 已更新 2014年三月12日17:03 - 

English 

环境

• Red Hat Enterprise Linux 5
• Red Hat Enterprise Linux 6
• NFS

问题

• How to safely stop NFS server ?
• How to check the clients connected before stoping NFS server ?

决议

• To check the connected client machines:

• Run this on NFS Server:

Raw

# netstat -an | grep 192.168.0.254:2049

Above command will show you the active connected hosts clients with NFS Server and will not show the clients who are idle.

NOTE: 192.168.0.254 is NFS Server and 2049 is NFS Server port no.

• This will help to check the connected clients (I/O) and umount them to safely stop the NFS server service.

诊断步骤

On NFS Server:
Check the share:

Raw

[root@vm254 ~]# cat /etc/exports 
/test   *(rw)

Mount share at client:

Raw

[savsingh@client ~]$ sudo mount vm254.redhat.com:/test  /mnt

Check connected clients at NFS server:

Raw

[root@vm254 ~]# netstat -an | grep 192.168.0.254:2049

tcp        0      0 192.168.0.254:2049          192.168.0.10:965           ESTABLISHED