i'm currently still messing with various bits of NFS on f12, and
i wanted to see if i could properly run *only* NFSv4 (that is, no
support for any earlier version of NFS), so some questions.
first, is there a short way to examine what versions are supported
by a running nfsd? i'm *guessing* that i can see that via "rpcinfo
-p":
...
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
...
is that what i'm being shown above? that i currently have support
for versions 2, 3 and 4? is there no simpler way to query a running
nfsd for that info?
but here's where it gets trickier. from here (which i assume is
relevant):
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Deployment_Guide/ch-nfs.html
i'm told that, under NFSv4, there is no need for any of rpc.mountd,
rpc.lockd or rpc.statd (as i read it, all this functionality has been
moved into the kernel with NFSv4).
so i can see how to disable support for all earlier versions of nfs
in /etc/sysconfig/nfs:
#
# Define which protocol versions mountd
# will advertise. The values are "no" or "yes"
# with yes being the default
#MOUNTD_NFS_V1="no"
#MOUNTD_NFS_V2="no"
#MOUNTD_NFS_V3="no"
...
so i uncomment all those lines to (allegedly) disable all earlier
version support and:
# service nfs restart
Shutting down NFS mountd: [ OK ]
Shutting down NFS daemon: [ OK ]
Shutting down NFS quotas: [ OK ]
Shutting down NFS services: [ OK ]
Starting NFS services: [ OK ]
Starting NFS quotas: [ OK ]
Starting NFS daemon: [ OK ]
Starting NFS mountd: Usage: rpc.mountd [-F|--foreground] [-h|--help]
[-v|--version] [-d kind|--debug kind]
[-o num|--descriptors num] [-f exports-file|--exports-file=file]
[-p|--port port] [-V version|--nfs-version version]
[-N version|--no-nfs-version version] [-n|--no-tcp]
[-H ha-callout-prog] [-s|--state-directory-path path]
[-g|--manage-gids] [-t num|--num-threads=num]
[FAILED]
#
ok, what just happened there? am i not allowed to do what i just
tried? and if i explicitly try to run *only* NFSv4, why is rpc.mountd
even being invoked? is there something else i need to be doing here?
rday
--
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Kernel Pedantry.
Web page: http://crashcourse.ca
Twitter: http://twitter.com/rpjday
========================================================================
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