[CentOS] RE-export nfs mounted share

Mon Jun 9 11:10:38 UTC 2008
James Pearson <james-p at moving-picture.com>

whoami i wrote:
> Hi
> 
> Is there any way to re-export an nfs mounted directory?  I am having three
> servers runnning on centos4.5 and i am trying to implement  nfs share in an
> below manner [bcoz there is no alternative way for me to setup nfs share]
> 
> HOST A--->>>EXPORTS /prod/data ------->>>HOST B
> 
> HOST B ---->>MOUNTED ------>>> /prod/data-----UNDER---/PROD1  [working fine]
> 
> HOST B EXPORTS /PROD1 ------>>>>HOST C
> 
> HOST C ----->>TRY MOUNTING ----->>>RESULT IN BELOW ERROR
> 
> BUT WHEN I TRY TO MOUNT THE ALREADY MOUNTED NFS SHARE IN  "HOST C "     I AM
> GETTING BELOW ERROR.
> 
> #################MOUNT ERROR##########################################
> mount: 10.65.64.30:/PROD1 failed, reason given by server: Permission denied
> ##########################################################################
> 
> Can anyone suggest me the way to work out aboVE scenario.
> 
> 
> Note: I find no -r(-re-export) option in rpc.mountd

AFAIK, it is not possible to (re-)export NFS mounted file systems using 
the kernel NFS server.

It might be possible to do this by running a userland NFS server (on 
"host b"), although I've never done this and I believe there are known 
issues with doing this.

James Pearson