Collection of my translations :
rpc.nfsd(8) System Manager's Manual rpc.nfsd(8) NAME rpc.nfsd - NFS Service process
SYNOPSIS/usr/sbin/rpc.nfsd [options] nproc DESCRIPTION
rpc.nfsd The program is implemented in the user space layer NFS service , The main functions are nfsd Kernel module to handle . User space program master
To specify which socket the kernel space layer service listens on , How many kernel threads are used . rpc.mountd Service provision ancillary services , For processing NFS Client's mount request . OPTIONS-d
or --debug Open debug log . -H or --host hostname
By default ,rpc.nfsd Will accept on all known network interface addresses NFS request , Use this option to specify a
Specific host name ( or IP address ), bring nfsd Only accept the host name ( or IP) Of NFS request . be careful lockd( provide NFS
Program of file lock service ) Still accept requests on all known network interfaces , In the future Kernel May change . You can specify this option more than once , bring nfsd Monitoring is implemented on multiple interfaces nfs Multiple instances .
-p or --port port appoint nfsd For acceptance NFS Requested listening port . default rpc.nfsd The listening port is 2049. -r or --rdma
Specify all standards RDMA port (nfsrdma, port 20049) On NFS Request should be processed . ( translator's note :RDMA(Remote Direct Memory
Access) Can be almost unnecessary cpu Participation of , Copy data directly Operation to specified address memory space on remote machine , Will replace tradition DMA pattern )--rdma=port
Turn on a standby port to listen RDMA request - Port is /etc/services One of the items listed in . -N or --no-nfs-version vers
This option allows rpc.nfsd Not to specific versions of NFS Provision of services . current rpc.nfsd Supported NFS Version has 2,3,4 And the latest Of 4.1. -s or --syslog
By default ,rpc.nfsd Error messages will be sent ( If it's on debug information , It also includes debug information ) Record to stderr.
This option allows rpc.nfsd Record information to syslog in . be careful , Error encountered while processing options , Still output to stderr.-T or --no-tcp
prohibit rpc.nfsd Receive client initiated TCP connect .-U or --no-udp prohibit rpc.nfsd Receive client initiated UDP connect . -V or --nfs-
version vers This option allows rcp.nfsd To a specific version NFS Provision of services . current rpc.nfsd Supported NFS Version has 2,3,4 And the latest 4.1. -L or
--lease-time seconds set up NFSv4 Lease time for (lease-time). It means how long the client needs to server End to confirm their status once .
The valid range is 10-3600 second . -G or --grace-time seconds set up NFSv4 Of grace-time
,NFSv2 and NFSv3 Of NLM. New file open request (NFSv4) And new file locks (NLM) In this section
Period not allowed , Clients will not be able to recover until this period of time has passed , To continue to open a new file or apply for a file lock . nproc
appoint NFS Number of threads served . Only one thread is started by default , However, multiple threads should be specified to ensure optimal performance . Actual number
The quantity should depend on NFS The number of clients and the amount of load they bring , but 8 One thread is a good starting point for the number of threads . use nfsstat(8) Tools can test the impact of changing the number of threads .
If NFS Service is running , Then specify host,port,protocol Will be ignored , Only options that specify the number of threads will
take effect , And will adjust ( Increase or decrease ) The current number of threads matches the specified value , In particular, specify 0 Threads will stop All threads , And therefore closes all open connections .
( translator's note : in other words nproc Set to 0 Can be used to kill safely nfsd process , stay CentOS 7 upper nfs.service And that's exactly what it did ) NOTES If the
program is built with TI-RPC support, it will enable any protocol and address
family combinations that are marked visiblein the netconfig database. SEE ALSO
rpc.mountd(8), exports(5), exportfs(8), rpc.rquotad(8), nfsstat(8), netconfig(5
). AUTHOR Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of
others.20 Feb 2014 rpc.nfsd(8)
Here is NFS Related translation :

translate :man rpcbind(rpcbind Chinese Manual ) <>
translate :man nfsd(rpc.nfsd Chinese Manual ) <>
translate :man mountd(rpc.mountd Chinese Manual )
translate :man statd(rpc.statd Chinese Manual ) <>
translate :man sm-notify(sm-notify Command manual in Chinese )
translate :man exportfs(exportfs Command manual in Chinese )
Partial translation :man nfs <>