Date: Thu, 9 Oct 2008 11:30:23 -0500
> From: Ken Teh <[EMAIL PROTECTED]>
> Subject: Re: NFS woes
> Dr Andrew C Aitchison wrote:
> On Wed, 8 Oct 2008, Ken Teh wrote:
>
>> reverted back to NFSv3 and have had no problems with it. Are folks
>> satisfied with NFSv4? Or, am I the stupid one for trusting the
>> default on the distro? I'd appreciate any general remarks you might
>> have on how to move forward.
>
> I've been put off NFSv4 becuase I cannot understand how to
> export several directory trees in differenet partitions.
> NFSv4 seems to want you to merge them into a virtual partion
> and export that, but the kernel cannot cope with the different
> bits of the virtual partition having different permission modes.
> So I can't export a read only partition and a read-write partition
> without the kernel becoming dangerously confused :-(
>
That I was able to do. The following /etc/exports is an example:
/x @myclients(fsid=0,rw,....)
/x/packages @myclients(ro,...)
/x/home @myclients(rw,...)
> I went back to NFSv3.
>
I completed my transition to NFS3 today. We'll see if it "performs better". I
expect it will from past experiences.
You can mix NFS4 and NFS3 exports:
#/etc/exports
#NFS4 exports from "virtual root" /x
#Note the "virtual root" should have rw permissions
/x @myclients(rw,async,fsid=0,...)
/x/xsubdir1 @myclients(rw,async,...)
/x/xsubdir2 @myclients(ro,async,...)
#NFS3 explicit exports
/y/ysubdir1 @myclients(rw,async,...)
/y/ysubdir2 @myclients(ro,async,...)
NFS4 helps reduce "stale file handle" messages. Be sure your firewall is
adjusted to handle nfs tcp packets. "Linux NFS FAQ" was very helpful for
me: http://nfs.sourceforge.net/
--
Chris Hunter
[EMAIL PROTECTED]
