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wag2639
Asked: 2011-03-28 00:48:39 +0800 CST

NFS hide /export from path

  • 772

How can I share FolderA on ServerA so that my client can simply access it as ServerA:/FolderA if FolderA is not in / ?

Lets say FolderA is actually 

/usr/local/test/RandomName

I can use bind in fstab to shorten it and put it in /export

/usr/local/test/RandomName /export/FolderA none bind 0 0

So now, I can mount it as

mount -t nfs ServerA:/export/FolderA /media/folderA

What I really want is

mount -t nfs ServerA:/FolderA /media/folderA

The server is Ubuntu 10.04 and the clients will include Macs and Linux machines

nfs export

4 Answers

  1. You have to set the base directory in your NFS exports. To do that and make /export the base directory you should open the file

    /etc/exports

    and enter the following in the first line:

    /export  the.IP.of.THEclientsyouwant(ro,fsid=0)

    With the option fsid=0 (or fsid=root) set you won't call the full path on the client side and then the command

    mount -t nfs ServerA:/FolderA /media/folderA

    just will work as you will.

    exports(5) Man page /etc/exports configuration - Red Hat

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  2. I'm not sure if you can do that using bind in your server's fstab. but I do know you can do this:

    ln -s /usr/local/test/RandomName /FolderA

    Configure your /etc/exports file to export /FolderA and you should be good.

    • 0

  3. The sole fsid=0 didn't work for me.

    nfs-utils>=2.4.1 got Add the "[exports] rootdir" option to nfs.conf feature (May 28, 2019):

    The following patchset adds support for the "rootdir" configuration option for nfsd in the "[exports]" section in /etc/nfs.conf.

    If a user sets this option to a valid directory path, then nfsd will act as if it is confined to a chroot jail based on that directory. All paths in /etc/exports and the exportfs utility are then resolved relative to that directory.

    Something like this should work:

    Note: I couldn't make exporting / root path work but exporting through a subdirectory did it.

    Target dir bound to /export/nfs/FolderA.

    /etc/nfs.conf:

    [exports]
rootdir=/export

    /etc/exports:

    /nfs (fsid=0) # workaround for `/` path
/nfs/FolderA

    Access it nfs://server_name/nfs/FolderA

    • 0

  4. Open following file on NFS server:

    /etc/exports

    and enter following details to it:

    /usr/local/test/RandomName XX.XX.XX.XX(rw)

    Then login NFS client and do mount as follows:

    mount -t nfs YY.YY.YY.YY:/usr/local/test/RandomName /media/folderA

    Fstab entry:

    YY.YY.YY.YY:/usr/local/test/RandomName /media/folderA nfs defaults 0 0

    Note:

    XX.XX.XX.XX - IP of NFS client
YY.YY.YY.YY - IP of NFS server
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