Hi Stefan,

> after I modified /etc/exports
> 
> /srv/fai/wheezy/config 
> 10.20.17.0/24(rw,sync,fsid=0,crossmnt,no_subtree_check,no_root_squash)
> /srv/fai/wheezy/nfsroot 
> 10.20.17.0/24(rw,sync,fsid=0,crossmnt,no_subtree_check,no_root_squash)
> 
> /srv/nfs4        
> 10.20.17.0/24(rw,sync,fsid=0,crossmnt,no_subtree_check,no_root_squash)

I think you have to remove fsid=0 for the first two entries. This
is for NFSv4, so only the last line with /srv/nfs4 should contain 
the enty fsid=0.

> I don't understand the sense of the nfs4 line. Should I include this export 
> to pxelinux.cfg?

The fsid=0 in the nfs4 line should disable nfsv4 for all other exports.
This is the root of all exported filesystems. Sindce all other are not
below this one, they can't use nfsv4...

On Debian you can disable nfsv4 per /etc/default/nfs-kernel-server:

   RPCMOUNTDOPTS="--no-nfs-version 4"

and restart the nfs-kernel server. But Thomas mentioned, that this might
not work...

Best regards

Dirk

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