FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/man/man8/zfs-set.8

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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, for non-inheritable properties, to the default;
   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

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