zfs/man/man8/zfs-set.8

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.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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.Dd March 16, 2022
.Dt ZFS-SET 8
.Os
.
.Sh NAME
.Nm zfs-set
.Nd set properties on ZFS datasets
.Sh SYNOPSIS
.Nm zfs
.Cm set
.Ar property Ns = Ns Ar value Oo Ar property Ns = Ns Ar value Oc Ns
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns
.Nm zfs
.Cm get
.Op Fl r Ns | Ns Fl d Ar depth
.Op Fl Hp
.Oo Fl o Ar field Ns Oo , Ns Ar field Oc Ns Oc
.Oo Fl s Ar source Ns Oo , Ns Ar source Oc Ns Oc
.Oo Fl t Ar type Ns Oo , Ns Ar type Oc Ns Oc
.Cm all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns
.Oo Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns | Ns Ar bookmark Oc Ns
.Nm zfs
.Cm inherit
.Op Fl rS
.Ar property Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns
.
.Sh DESCRIPTION
.Bl -tag -width ""
.It Xo
.Nm zfs
.Cm set
.Ar property Ns = Ns Ar value Oo Ar property Ns = Ns Ar value Oc Ns
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns
.Xc
Only some properties can be edited.
See
.Xr zfsprops 7
for more information on what properties can be set and acceptable
values.
Numeric values can be specified as exact values, or in a human-readable form
with a suffix of
.Sy B , K , M , G , T , P , E , Z
.Po for bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, exabytes,
or zettabytes, respectively
.Pc .
User properties can be set on snapshots.
For more information, see the
.Em User Properties
section of
.Xr zfsprops 7 .
.It Xo
.Nm zfs
.Cm get
.Op Fl r Ns | Ns Fl d Ar depth
.Op Fl Hp
.Oo Fl o Ar field Ns Oo , Ns Ar field Oc Ns Oc
.Oo Fl s Ar source Ns Oo , Ns Ar source Oc Ns Oc
.Oo Fl t Ar type Ns Oo , Ns Ar type Oc Ns Oc
.Cm all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns
.Oo Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns | Ns Ar bookmark Oc Ns
.Xc
Displays properties for the given datasets.
If no datasets are specified, then the command displays properties for all
datasets on the system.
For each property, the following columns are displayed:
.Bl -tag -compact -offset 4n -width "property"
.It Sy name
Dataset name
.It Sy property
Property name
.It Sy value
Property value
.It Sy source
Property source
.Sy local , default , inherited , temporary , received , No or Sy - Pq none .
.El
.Pp
All columns are displayed by default, though this can be controlled by using the
.Fl o
option.
This command takes a comma-separated list of properties as described in the
.Sx Native Properties
and
.Sx User Properties
sections of
.Xr zfsprops 7 .
.Pp
The value
.Sy all
can be used to display all properties that apply to the given dataset's type
.Pq Sy filesystem , volume , snapshot , No or Sy bookmark .
.Bl -tag -width "-s source"
.It Fl H
Display output in a form more easily parsed by scripts.
Any headers are omitted, and fields are explicitly separated by a single tab
instead of an arbitrary amount of space.
.It Fl d Ar depth
Recursively display any children of the dataset, limiting the recursion to
.Ar depth .
A depth of
.Sy 1
will display only the dataset and its direct children.
.It Fl o Ar field
A comma-separated list of columns to display, defaults to
.Sy name , Ns Sy property , Ns Sy value , Ns Sy source .
.It Fl p
Display numbers in parsable
.Pq exact
values.
.It Fl r
Recursively display properties for any children.
.It Fl s Ar source
A comma-separated list of sources to display.
Those properties coming from a source other than those in this list are ignored.
Each source must be one of the following:
.Sy local , default , inherited , temporary , received , No or Sy none .
The default value is all sources.
.It Fl t Ar type
A comma-separated list of types to display, where
.Ar type
is one of
.Sy filesystem , snapshot , volume , bookmark , No or Sy all .
.El
.It Xo
.Nm zfs
.Cm inherit
.Op Fl rS
.Ar property Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns
.Xc
Clears the specified property, causing it to be inherited from an ancestor,
restored to default if no ancestor has the property set, or with the
.Fl S
option reverted to the received value if one exists.
See
.Xr zfsprops 7
for a listing of default values, and details on which properties can be
inherited.
.Bl -tag -width "-r"
.It Fl r
Recursively inherit the given property for all children.
.It Fl S
Revert the property to the received value if one exists; otherwise operate as
if the
.Fl S
option was not specified.
.El
.El
.
.Sh EXAMPLES
.\" These are, respectively, examples 1, 4, 6, 7, 11, 14, 16 from zfs.8
.\" Make sure to update them bidirectionally
.Ss Example 1 : No Creating a ZFS File System Hierarchy
The following commands create a file system named
.Ar pool/home
and a file system named
.Ar pool/home/bob .
The mount point
.Pa /export/home
is set for the parent file system, and is automatically inherited by the child
file system.
.Dl # Nm zfs Cm create Ar pool/home
.Dl # Nm zfs Cm set Sy mountpoint Ns = Ns Ar /export/home pool/home
.Dl # Nm zfs Cm create Ar pool/home/bob
.
.Ss Example 2 : No Disabling and Enabling File System Compression
The following command disables the
.Sy compression
property for all file systems under
.Ar pool/home .
The next command explicitly enables
.Sy compression
for
.Ar pool/home/anne .
.Dl # Nm zfs Cm set Sy compression Ns = Ns Sy off Ar pool/home
.Dl # Nm zfs Cm set Sy compression Ns = Ns Sy on Ar pool/home/anne
.
.Ss Example 3 : No Setting a Quota on a ZFS File System
The following command sets a quota of 50 Gbytes for
.Ar pool/home/bob :
.Dl # Nm zfs Cm set Sy quota Ns = Ns Ar 50G pool/home/bob
.
.Ss Example 4 : No Listing ZFS Properties
The following command lists all properties for
.Ar pool/home/bob :
.Bd -literal -compact -offset Ds
.No # Nm zfs Cm get Sy all Ar pool/home/bob
NAME PROPERTY VALUE SOURCE
pool/home/bob type filesystem -
pool/home/bob creation Tue Jul 21 15:53 2009 -
pool/home/bob used 21K -
pool/home/bob available 20.0G -
pool/home/bob referenced 21K -
pool/home/bob compressratio 1.00x -
pool/home/bob mounted yes -
pool/home/bob quota 20G local
pool/home/bob reservation none default
pool/home/bob recordsize 128K default
pool/home/bob mountpoint /pool/home/bob default
pool/home/bob sharenfs off default
pool/home/bob checksum on default
pool/home/bob compression on local
pool/home/bob atime on default
pool/home/bob devices on default
pool/home/bob exec on default
pool/home/bob setuid on default
pool/home/bob readonly off default
pool/home/bob zoned off default
pool/home/bob snapdir hidden default
pool/home/bob acltype off default
pool/home/bob aclmode discard default
pool/home/bob aclinherit restricted default
pool/home/bob canmount on default
pool/home/bob xattr on default
pool/home/bob copies 1 default
pool/home/bob version 4 -
pool/home/bob utf8only off -
pool/home/bob normalization none -
pool/home/bob casesensitivity sensitive -
pool/home/bob vscan off default
pool/home/bob nbmand off default
pool/home/bob sharesmb off default
pool/home/bob refquota none default
pool/home/bob refreservation none default
pool/home/bob primarycache all default
pool/home/bob secondarycache all default
pool/home/bob usedbysnapshots 0 -
pool/home/bob usedbydataset 21K -
pool/home/bob usedbychildren 0 -
pool/home/bob usedbyrefreservation 0 -
.Ed
.Pp
The following command gets a single property value:
.Bd -literal -compact -offset Ds
.No # Nm zfs Cm get Fl H o Sy value compression Ar pool/home/bob
on
.Ed
.Pp
The following command lists all properties with local settings for
.Ar pool/home/bob :
.Bd -literal -compact -offset Ds
.No # Nm zfs Cm get Fl r s Sy local Fl o Sy name , Ns Sy property , Ns Sy value all Ar pool/home/bob
NAME PROPERTY VALUE
pool/home/bob quota 20G
pool/home/bob compression on
.Ed
.
.Ss Example 5 : No Inheriting ZFS Properties
The following command causes
.Ar pool/home/bob No and Ar pool/home/anne
to inherit the
.Sy checksum
property from their parent.
.Dl # Nm zfs Cm inherit Sy checksum Ar pool/home/bob pool/home/anne
.
.Ss Example 6 : No Setting User Properties
The following example sets the user-defined
.Ar com.example : Ns Ar department
property for a dataset:
.Dl # Nm zfs Cm set Ar com.example : Ns Ar department Ns = Ns Ar 12345 tank/accounting
.
.Ss Example 7 : No Setting sharenfs Property Options on a ZFS File System
The following commands show how to set
.Sy sharenfs
property options to enable read-write
access for a set of IP addresses and to enable root access for system
.Qq neo
on the
.Ar tank/home
file system:
.Dl # Nm zfs Cm set Sy sharenfs Ns = Ns ' Ns Ar rw Ns =@123.123.0.0/16:[::1],root= Ns Ar neo Ns ' tank/home
.Pp
If you are using DNS for host name resolution,
specify the fully-qualified hostname.
.
.Sh SEE ALSO
.Xr zfsprops 7 ,
.Xr zfs-list 8