topic Re: NFS client unmounts. But NFS server still shows mounted in Operating System - Linux

NFS client unmounts. But NFS server still shows mounted

kenny chia — Wed, 28 May 2008 03:17:29 GMT

Hi
On a Red Hat ES3 client (hostname genesis) I mounted a directory on another server (hostname hnsnas_hpsim ip 192.168.23.108) using the following command

genesis $ mount -t nfs 192.168.23.108:/users1/oraclerman /rmanshare

Later on I unmount the directory using the following command

genesis $ umount /rmanshare

Using the df command /rmanshare is not shown not to be mounted.

But running showmount on the server still shows that genesis is still mounted

[12:11:49 root@hnsnas_hpsim ~]# showmount
Hosts on hnsnas_hpsim:
genesis

Is the client genesis still mounted on hnsnas_hpsim ?

Re: NFS client unmounts. But NFS server still shows mounted

Matti_Kurkela — Wed, 28 May 2008 06:04:40 GMT

The man page of the showmount command, section "BUGS", says (at least on my Ubuntu Linux desktop):

"The completeness and accuracy of the information that showmount displays varies according to the NFS serverâ s implementation."

So the showmount command might be inaccurate.
What's the OS version of the server host, and is it up to date with patches?

MK

Re: NFS client unmounts. But NFS server still shows mounted

Steven E. Protter — Wed, 28 May 2008 07:56:10 GMT

Shalom,

There may be an open file handle that may not be triggering the normal "device busy" notice at umount time.

Use fuser to find file handles.

See about the system patches as well.

SEP

Re: NFS client unmounts. But NFS server still shows mounted

skt_skt — Sat, 31 May 2008 13:34:57 GMT

export from the server side.. and after that the client should not show in shomount

server#exportfs -v -u client:/mount/point

Re: NFS client unmounts. But NFS server still shows mounted

kenny chia — Tue, 03 Jun 2008 01:37:55 GMT

Hi Kumar
I tried the export command you suggested. Still the same results :(

Re: NFS client unmounts. But NFS server still shows mounted

savus — Thu, 31 Jul 2008 04:44:01 GMT

Hello,

try on the client fuser -ku /mount_point

Regards,
Stefan

Re: NFS client unmounts. But NFS server still shows mounted

skt_skt — Thu, 31 Jul 2008 10:20:21 GMT

are u sure none of other clients using them. But that shoould be reported in server side with exportfs