NFS Option Reload without Service Restart What do I need to do to change the RPCNFSDCOUNT setting without a full service restart? I need to reload the NFS configuration without restarting the service. The RPCNFSDCOUNT thread count is too low for the workload but I cannot get the management to agree on a schedule for a change window. A normal service can frequently do this with a SIGHUP. I did attempt this with a `kill -HUP $(pidof rpc.mountd)`, but that was unsuccessful in getting the new RPCNFSDCOUNT setting applied from /etc/sysconfig/nfs on this old Fedora 8 box. The man pages for the other NFS daemons incline me to think that HUP'ing those processes won't be of any benefit, and I'm rather reluctant to HUP the kthreadd process that is the parent process of the nfsd threads themselves.

And after an obvious mental lapse, I remembered the /proc filesystem. /proc/fs/nfsd, specifically, controls the runtime settings of the nfsd service.

In my case, this meant `echo '32' > /proc/fs/nfsd/threads` sets the number of threads to 32.