svcadm(1M)을 검색하려면 섹션에서 1M 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
nfsd(8)
System Administration Commands nfsd(8)
NAME
nfsd - NFS daemon
SYNOPSIS
/usr/lib/nfs/nfsd [-a] [-c #_conn] [-l listen_backlog]
[-p protocol] [-t device] [nservers]
DESCRIPTION
nfsd is the daemon that handles client file system requests. Only users
with {PRIV_SYS_NFS} and sufficient privileges to write to /var/run can
run this daemon.
The nfsd daemon is automatically invoked using share(8) with the -a
option.
By default, nfsd starts over the TCP and UDP transports for versions 2
and 3. By default, it starts over the TCP for version 4. You can change
this with the -p option.
A previously invoked nfsd daemon started with or without options must
be stopped before invoking another nfsd command.
To change startup parameters for nfsd, use the sharectl(8) command.
SMF Management
The nfsd service is managed by the service management facility, smf(7),
under the service identifier:
svc:/network/nfs/server
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(8). The service's
status can be queried using the svcs(1) command.
If nfsd is killed with SIGTERM, it will not be restarted by the service
management facility. Instead, nfsd can be restarted by other signals,
such as SIGINT.
The sharectl(8) command can be used to manage all the parameters
related to nfsd. The following are the parameters currently supported:
server_versmax=num
server_versmin=num
The NFS server only uses NFS versions in the range specified by
these variables. Valid values or versions are: 2, 3, 4 and 4.1. For
the server, the default minimum version is 2 and the default maxi‐
mum version is 4.1. server_versmin=4 is equivalent to 4.0, while
server_versmax=4 is equivalent to 4.1. Both min and max can be set
to 4.0 or 4.1 explicitly to avoid confusion.
server_delegation=on | off
By default, this variable is on and the NFS server provides delega‐
tions to clients. The user can turn off delegations for all
exported file systems by setting this variable to off (case-sensi‐
tive). This variable applies only to NFS Version 4.
max_connections=num
Sets the maximum number of concurrent, connection-oriented connec‐
tions. The default is unlimited and is obtained by setting to -1.
Equivalent to the -c option in nfsd.
listen_backlog=num
Set connection queue length for the NFS over a connection-oriented
transport. The default value is 32, meaning 32 entries in the
queue. Equivalent to the -l option in nfsd.
protocol=ALL
Start nfsd over the specified protocol only. Equivalent to the -p
option in nfsd. ALL is equivalent to -a on the nfsd command line.
Mutually exclusive of NFS SMF parameter device. One or the other of
NFS SMF parameters device and protocol must not be set. If both are
set, the nfs/server service goes into maintenance mode. For the UDP
protocol, only version 2 and version 3 service is established. NFS
Version 4 is not supported for the UDP protocol. Equivalent to the
-p option.
device=devname
Start NFS daemon for the transport specified by the specified
device only. Equivalent to the -t option in nfsd. Mutually exclu‐
sive of NFS SMF parameter protocol. One or the other of NFS SMF
parameters device and protocol must not be set.
servers=num
Maximum number of concurrent NFS requests. The default is 2048.
Equivalent to the nservers operand.
server_numeric_stringid=on|off
By default, this variable is on and the NFS server accepts the
numeric uids and gids from NFS clients using auth_sys authentica‐
tion and returns numeric uids and gids to clients using auth_sys.
To turn off this behaviour, set the variable to 'off'(case-sensi‐
tive). This variable applies only to NFS Version 4 and is intended
to ease migration from NFSv2/v3.
See EXAMPLES, below.
OPTIONS
The following options are supported:
-a Start an NFS daemon over all available connectionless
and connection-oriented transports, including UDP and
TCP. Equivalent of setting the protocol parameter to ALL
in the SMF for NFS using the sharectl(8) command.
-c #_conn This sets the maximum number of connections allowed to
the NFS server over connection-oriented transports. By
default, the number of connections is unlimited. Equiva‐
lent of the max_connections parameter in the SMF for NFS
using the sharectl(8) command.
-l Set connection queue length for the NFS TCP over a con‐
nection-oriented transport. The default value is 32
entries. Equivalent of the listen_backlog parameter in
the SMF for NFS using the sharectl(8) command.
-p protocol Start a NFS daemon over the specified protocol. Equiva‐
lent of the protocol parameter in the SMF for NFS using
the sharectl(8) command.
-t device Start a NFS daemon for the transport specified by the
given device. Equivalent of the device parameter in the
SMF for NFS using the sharectl(8) command.
OPERANDS
The following operands are supported:
nservers This sets the maximum number of concurrent NFS requests
that the server can handle. This concurrency is achieved by
up to nservers threads created as needed in the kernel.
nservers should be based on the load expected on this
server. If nservers is not specified, the maximum number of
concurrent NFS requests will default to 2048. Equivalent of
the servers parameter in the SMF for NFS using the
sharectl(8) command.
EXAMPLES
Example 1 Turning Off Delegation
The nfsd properties specified in these examples are described under
"SMF Management," above.
Delegation is an NFSv4 feature in which the server delegates the man‐
agement of a file to a client. For example, the server could grant (or
not grant) either a read delegation or a write delegation to a client.
The following command does this, setting the server_delegation property
to off.
# sharectl set -p server_delegation=off nfs
Example 2 Determining Value of Delegation
The following command obtains the current value of the server_delega‐
tion property.
# sharectl get -p server_delegation nfs
server_delegation=on
Example 3 Setting Maximum Number of Concurrent Requests
The following command sets the maximum number of concurrent NFS
requests.
# sharectl set -p servers=32 nfs
Example 4 Setting Connection Queue Length
The following command sets the maximum queue length for the NFS over a
connection-oriented transport.
# sharectl set -p listen_backlog=48 nfs
EXIT STATUS
0 Daemon started successfully.
1 Daemon failed to start.
FILES
.nfsXXX Client machine pointer to an open-but-unlinked
file.
.ORCLdeleted_files Directory used by the server to keep track of
the files which were removed by an NFS client
while still open (.nfsXXX files). This direc‐
tory resides in root of shared filesystem.
This directory should not be removed.
/etc/system System configuration information file.
/var/nfs/v4_state Directories used by the server to manage
/var/nfs/v4_oldstate client state information. These directories
/var/nfs/v41_state should not be removed.
/var/nfs/v41_oldstate
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilityservice/file-system/nfs
SEE ALSO
ps(1), svcs(1), sharetab(5), system(5), attributes(7), smf(7),
mountd(8), share(8), sharectl(8), svcadm(8), network-nfs-cleanup(8S)
Managing Network File Systems in Oracle Solaris 11.4
NOTES
Manually starting and restarting nfsd is not recommended. If it is nec‐
essary to do so, use svcadm to enable or disable the nfs service
(svc:/network/nfs/server). If it is disabled, it will be enabled by
share_nfs(8), unless its application/auto_enable property is set to
false. See Managing Network File Systems in Oracle Solaris 11.4 and
svcadm(8) for more information.
Oracle Solaris 11.4 24 Feb 2021 nfsd(8)