amd64/166442: nfsd error when not compiled into kernel

[Beeblebrox]

>Number:         166442
>Category:       amd64
>Synopsis:       nfsd error when not compiled into kernel
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 27 12:10:11 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Beeblebrox
>Release:        9.0-STABLE
>Organization:
>Environment:
FreeBSD 9.0-STABLE #0 r233503: Mon Mar 26 23:53:01 EEST 2012
>Description:
In Kernel config file, options:
options         NFSCLIENT               # Network Filesystem Client
#options        NFSSERVER               # Network Filesystem Server
#options        NFSLOCKD                # Network Lock Manager
options         NFS_ROOT                # NFS usable as /, requires NFSCLIENT
buildkernel with these settings results in a kernel which CANNOT KLDLOAD nfsd, and result in error message: "Version Mismatch" or "Exec Format Error"

Commenting out NFSCLIENT results in a kernel which is able to load and start nfsd, while the PXE terminal client is still able to boot and mount root from NFS (provided nfscl_enable="YES" is specified in the /boot/loader.conf of PXE's root). so NFS_ROOT does not necessarily require NFSCLIENT, but NFSCLIENT certainly seems to require NFSSERVER.
>How-To-Repeat:
already explained
>Fix:
Comment out NFSCLIENT

>Release-Note:
>Audit-Trail:
>Unformatted: