Re: NFSv4 fsid=0 export still necessary?

[Steve Dickson <SteveD@redhat.com>]

On 12/03/2011 06:21 AM, Harald Dunkel wrote:
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> Hi folks,
> 
> several NFSv4-HOWTOs in the net require to export a root directory
> with fsid=0 first. Other exported directory trees should be nested
> within this root directory and exported with nohide. AFAIU the advan-
> tage of the root dir is that the client can mount "server:/somedir"
> instead of "server:/remote_mount_point/somedir".
> 
> Question: Is the common root directory optional? Since NFSv3 doesn't
> support this name space feature, wouldn't it be more wise to omit
> the root directory?
No, the fsid=0 export option is no longer necessary to make v4
exports compatible with v2/v3 exports. When the fsid option
is not set, the default root is define as "/" which allows
the v4 clients to mount the same exports as does the v2/v3 clients.

Now if you do not what "/" as your default root, you can
set fsid to something like fsid=/export. This will
change to default root to the /export directory which
means your v4 clients will only be able to access exports
under the /export directory. 

I believe the Linux server is the only server to have
this option...

steved.

> 
> 
> Any helpful comment would be highly appreciated
> 
> Harri
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