On Apr. 02, 2009, 19:54 +0300, "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote:
> On Thu, Apr 02, 2009 at 07:34:29PM +0300, Benny Halevy wrote:
>> On Apr. 02, 2009, 17:31 +0300, "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote:
>>> On Thu, Apr 02, 2009 at 10:25:55AM -0400, Trond Myklebust wrote:
>>>> On Thu, 2009-04-02 at 10:22 -0400, J. Bruce Fields wrote:
>>>>> On Thu, Apr 02, 2009 at 10:16:40AM -0400, Trond Myklebust wrote:
>>>>>> On Thu, 2009-04-02 at 16:46 +0300, Benny Halevy wrote:
>>>>>>> Trond, please speak up if you want to remove CONFIG_NFS_V4_1 as well.
>>>>>>> On the client side minorversion 1 will be used only if the user
>>>>>>> explicitly asked for it with mount -o minorversion=1.
>>>>>> I'd feel more comfortable with being able to compile it out until the
>>>>>> stability of the code has been established. I'd certainly want to be
>>>>>> able to do that on the server side, since it has no other means to
>>>>>> restrict the protocol version should it turn out that NFSv4.1 has some
>>>>>> fatal condition.
>>>>> I think it's acceptable given an interface that allows choosing the
>>>>> supported minorversion at runtime (and that defaults 4.1 to off).
>>>> Is there such an interface on the server?
>>> That's the patch Benny just posted. It seems like a pretty simple
>>> extension of the existing version-choosing interface
>>> (/proc/fs/nfsd/versions), though I think the version he posted defaults
>>> 4.1 to on? I need to take another look.
>> That's right. This can be changed trivially,
>> but I'll have to find and work the reason why the settings reset on
>> service nfs restart, otherwise it will reset itself.
>
> Maybe you're starting and stopping the server using distro init scripts
> that load and unload the nfsd module?
I'm using redhat's /etc/init.d/nfs
My impression was that it doesn't unload the nfsd module when the service
is stopped. However it does run modprobe on "start". I wonder if that's
causing the module to reload.
Here's their script for Fedora 9:
#!/bin/sh
#
# nfs This shell script takes care of starting and stopping
# the NFS services.
#
# chkconfig: - 60 20
# description: NFS is a popular protocol for file sharing across TCP/IP \
# networks. This service provides NFS server functionality, \
# which is configured via the /etc/exports file.
# probe: true
# config: /etc/sysconfig/nfs
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
if [ ! -f /etc/sysconfig/network ]; then
exit 6
fi
. /etc/sysconfig/network
# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 6
[ -x /usr/sbin/rpc.nfsd ] || exit 5
[ -x /usr/sbin/rpc.mountd ] || exit 5
[ -x /usr/sbin/exportfs ] || exit 5
# Don't fail if /etc/exports doesn't exist; create a bare-bones version and continue.
[ -r /etc/exports ] || \
{ touch /etc/exports && chmod u+rw,g+r,o+r /etc/exports ; } || \
{ echo "/etc/exports does not exist" ; exit 0 ; }
# Check for and source configuration file otherwise set defaults
[ -f /etc/sysconfig/nfs ] && . /etc/sysconfig/nfs
[ -z "$MOUNTD_NFS_V2" ] && MOUNTD_NFS_V2=default
[ -z "$MOUNTD_NFS_V3" ] && MOUNTD_NFS_V3=default
# Number of servers to be started by default
[ -z "$RPCNFSDCOUNT" ] && RPCNFSDCOUNT=8
# Remote quota server
[ -z "$RQUOTAD" ] && RQUOTAD=`type -path rpc.rquotad`
RETVAL=0
# See how we were called.
case "$1" in
start)
# Start daemons.
[ -x /usr/sbin/rpc.svcgssd ] && /sbin/service rpcsvcgssd start
# Load the nfsd module so /proc/fs/nfsd will exist
[ "$NFSD_MODULE" != "noload" ] && {
[ -x /sbin/modprobe ] && /sbin/modprobe nfsd
}
action $"Starting NFS services: " /usr/sbin/exportfs -r
# Set the ports lockd should listen on
if [ -n "$LOCKD_TCPPORT" ]; then
/sbin/sysctl -w fs.nfs.nlm_tcpport=$LOCKD_TCPPORT >/dev/null 2>&1
fi
if [ -n "$LOCKD_UDPPORT" ]; then
/sbin/sysctl -w fs.nfs.nlm_udpport=$LOCKD_UDPPORT >/dev/null 2>&1
fi
if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
echo -n $"Starting NFS quotas: "
[ -n "$RQUOTAD_PORT" ] \
&& RPCRQUOTADOPTS="$RPCRQUOTADOPTS -p $RQUOTAD_PORT"
daemon rpc.rquotad $RPCRQUOTADOPTS
RETVAL=$?
echo
fi
echo -n $"Starting NFS daemon: "
daemon rpc.nfsd $RPCNFSDARGS $RPCNFSDCOUNT
RETVAL=$?
echo
[ $RETVAL -ne 0 ] && exit $RETVAL
[ -n "$MOUNTD_PORT" ] \
&& RPCMOUNTDOPTS="$RPCMOUNTDOPTS -p $MOUNTD_PORT"
case $MOUNTD_NFS_V1 in
no|NO)
RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 1" ;;
esac
case $MOUNTD_NFS_V2 in
no|NO)
RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 2" ;;
esac
case $MOUNTD_NFS_V3 in
no|NO)
RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3" ;;
esac
echo -n $"Starting NFS mountd: "
daemon rpc.mountd $RPCMOUNTDOPTS
RETVAL=$?
echo
touch /var/lock/subsys/nfs
# Let rpc.idmapd know that rpc.mountd just started
[ -x /usr/sbin/rpc.idmapd ] && /sbin/service rpcidmapd condstart
;;
stop)
# Stop daemons.
echo -n $"Shutting down NFS mountd: "
killproc rpc.mountd
echo
echo -n $"Shutting down NFS daemon: "
killproc nfsd -2
echo
if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
echo -n $"Shutting down NFS quotas: "
killproc rpc.rquotad
RETVAL=$?
echo
fi
# Reset the lockd ports if they were set
if [ -n "$LOCKD_TCPPORT" ]; then
/sbin/sysctl -w fs.nfs.nlm_tcpport=0 >/dev/null 2>&1
fi
if [ -n "$LOCKD_UDPPORT" ]; then
/sbin/sysctl -w fs.nfs.nlm_udpport=0 >/dev/null 2>&1
fi
# Do it the last so that clients can still access the server
# when the server is running.
cnt=`/usr/sbin/exportfs -v | /usr/bin/wc -l`
if [ $cnt -gt 0 ]; then
action $"Shutting down NFS services: " /usr/sbin/exportfs -au
else
action $"Shutting down NFS services: " /bin/false
fi
[ -x /usr/sbin/rpc.svcgssd ] && /sbin/service rpcsvcgssd stop
rm -f /var/lock/subsys/nfs
;;
status)
[ -x /usr/sbin/rpc.svcgssd ] && /sbin/service rpcsvcgssd status
status rpc.mountd
status nfsd
if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
status rpc.rquotad
fi
RETVAL=$?
;;
restart)
$0 stop
$0 start
;;
reload)
/usr/sbin/exportfs -r
touch /var/lock/subsys/nfs
;;
probe)
if [ ! -f /var/lock/subsys/nfs ] ; then
echo $"start"; exit 0
fi
/sbin/pidof rpc.mountd >/dev/null 2>&1; MOUNTD="$?"
/sbin/pidof nfsd >/dev/null 2>&1; NFSD="$?"
if [ $MOUNTD = 1 -o $NFSD = 1 ] ; then
echo $"restart"; exit 0
fi
if [ /etc/exports -nt /var/lock/subsys/nfs ] ; then
echo $"reload"; exit 0
fi
;;
condrestart)
[ -x /usr/sbin/rpc.svcgssd ] && /sbin/service rpcsvcgssd condrestart
[ -f /var/lock/subsys/nfs ] && {
$0 stop
$0 start
}
;;
*)
echo $"Usage: nfs {start|stop|status|restart|reload|condrestart}"
RETVAL=3
;;
esac
exit $RETVAL
>
> --b.
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