[plug] NFS trouble "no export entry" for root fs.

[David Campbell]

Date sent:      	Sat, 29 May 1999 23:29:41 +0800 (WST)
From:           	Mike Holland <myk at golden.wattle.id.au>
To:             	Perth Linux User Group <plug at linux.org.au>
Subject:        	[plug] NFS trouble "no export entry" for root fs.
Send reply to:  	plug at linux.org.au

> Since upgrading ( 2.2, redhat6 ) I have had some odd trouble with NFS.
> The client get a stale NFS handle for no apparent reason on a mounted
> filesystem that was previously working. I then unmount and try to remount,
> but the server refuses, and logs:
> 
> 	mountd[449]: refused mount request from donau: no export entry 
> 
> But of course there is one. Nothing has changed in the /etc/exports file.
> 
> 	/var/spool/mail donau(rw,no_root_squash)
> 	/       donau(rw,no_root_squash)
> 	/usr        donau(ro,no_root_squash)
> 	/home       donau(rw,no_root_squash)
> 
> The /var/spool/mail is still working fine (can unmount and remount),
>  but '/' is rejected. The others will mount at another mountpoint.

Very queer... It has been several years since I have dealt with NFS 
in any great detail but there is a way to update the export table 
without shutting down the NFS daemons. From memory it involves 
running "exportfs" as root with a few options. One of the options 
should list the exports as the NFS daemon understands.

Maybe I have a wire crossed here because there is a very similar util 
which tells you what "volumes" have been exported by a remote NFS 
server (eg: browsing an NFS server).

You may want to check the man page on exportfs and also the "see 
also" entries.

David Campbell
=======================================================
campbell at torque.net
"This is not an office, rather Hell with fluorescent lighting"