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This commit adds support for JSON output for zfs version and zfs get commands. '-j' flag can be used to get output in JSON format. Information is collected in nvlist objects which is later printed in JSON format. Existing options that work for zfs get and zfs version also work with '-j' flag. man pages for zfs get and zfs version are updated accordingly. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Signed-off-by: Umer Saleem <usaleem@ixsystems.com> Closes #16217
377 lines
12 KiB
Groff
377 lines
12 KiB
Groff
.\"
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.\" CDDL HEADER START
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.\"
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.\" The contents of this file are subject to the terms of the
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.\" Common Development and Distribution License (the "License").
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.\" You may not use this file except in compliance with the License.
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.\"
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.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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.\" or https://opensource.org/licenses/CDDL-1.0.
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.\" See the License for the specific language governing permissions
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.\" and limitations under the License.
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.\"
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.\" When distributing Covered Code, include this CDDL HEADER in each
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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.\" If applicable, add the following below this CDDL HEADER, with the
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.\" fields enclosed by brackets "[]" replaced with your own identifying
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.\" information: Portions Copyright [yyyy] [name of copyright owner]
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.\"
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.\" CDDL HEADER END
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.\"
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.\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
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.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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.\" Copyright (c) 2011, 2019 by Delphix. All rights reserved.
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.\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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.\" Copyright (c) 2014, Joyent, Inc. All rights reserved.
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.\" Copyright (c) 2014 by Adam Stevko. All rights reserved.
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.\" Copyright (c) 2014 Integros [integros.com]
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.\" Copyright 2019 Richard Laager. All rights reserved.
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.\" Copyright 2018 Nexenta Systems, Inc.
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.\" Copyright 2019 Joyent, Inc.
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.\"
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.Dd April 20, 2024
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.Dt ZFS-SET 8
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.Os
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.
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.Sh NAME
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.Nm zfs-set
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.Nd set properties on ZFS datasets
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.Sh SYNOPSIS
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.Nm zfs
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.Cm set
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.Op Fl u
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.Ar property Ns = Ns Ar value Oo Ar property Ns = Ns Ar value Oc Ns …
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.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns …
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.Nm zfs
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.Cm get
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.Op Fl r Ns | Ns Fl d Ar depth
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.Op Fl Hp
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.Op Fl j Op Ar --json-int
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.Oo Fl o Ar field Ns Oo , Ns Ar field Oc Ns … Oc
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.Oo Fl s Ar source Ns Oo , Ns Ar source Oc Ns … Oc
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.Oo Fl t Ar type Ns Oo , Ns Ar type Oc Ns … Oc
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.Cm all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns …
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.Oo Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns | Ns Ar bookmark Oc Ns …
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.Nm zfs
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.Cm inherit
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.Op Fl rS
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.Ar property Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns …
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.
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.Sh DESCRIPTION
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.Bl -tag -width ""
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.It Xo
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.Nm zfs
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.Cm set
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.Op Fl u
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.Ar property Ns = Ns Ar value Oo Ar property Ns = Ns Ar value Oc Ns …
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.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns …
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.Xc
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Only some properties can be edited.
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See
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.Xr zfsprops 7
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for more information on what properties can be set and acceptable
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values.
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Numeric values can be specified as exact values, or in a human-readable form
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with a suffix of
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.Sy B , K , M , G , T , P , E , Z
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.Po for bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, exabytes,
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or zettabytes, respectively
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.Pc .
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User properties can be set on snapshots.
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For more information, see the
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.Em User Properties
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section of
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.Xr zfsprops 7 .
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.Bl -tag -width "-u"
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.It Fl u
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Update mountpoint, sharenfs, sharesmb property but do not mount or share the
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dataset.
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.El
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.It Xo
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.Nm zfs
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.Cm get
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.Op Fl r Ns | Ns Fl d Ar depth
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.Op Fl Hp
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.Op Fl j Op Ar --json-int
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.Oo Fl o Ar field Ns Oo , Ns Ar field Oc Ns … Oc
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.Oo Fl s Ar source Ns Oo , Ns Ar source Oc Ns … Oc
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.Oo Fl t Ar type Ns Oo , Ns Ar type Oc Ns … Oc
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.Cm all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns …
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.Oo Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns | Ns Ar bookmark Oc Ns …
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.Xc
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Displays properties for the given datasets.
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If no datasets are specified, then the command displays properties for all
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datasets on the system.
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For each property, the following columns are displayed:
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.Bl -tag -compact -offset 4n -width "property"
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.It Sy name
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Dataset name
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.It Sy property
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Property name
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.It Sy value
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Property value
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.It Sy source
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Property source
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.Sy local , default , inherited , temporary , received , No or Sy - Pq none .
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.El
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.Pp
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All columns are displayed by default, though this can be controlled by using the
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.Fl o
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option.
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This command takes a comma-separated list of properties as described in the
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.Sx Native Properties
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and
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.Sx User Properties
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sections of
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.Xr zfsprops 7 .
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.Pp
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The value
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.Sy all
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can be used to display all properties that apply to the given dataset's type
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.Pq Sy filesystem , volume , snapshot , No or Sy bookmark .
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.Bl -tag -width "-s source"
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.It Fl j Op Ar --json-int
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Display the output in JSON format.
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Specify
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.Sy --json-int
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to display numbers in integer format instead of strings for JSON output.
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.It Fl H
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Display output in a form more easily parsed by scripts.
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Any headers are omitted, and fields are explicitly separated by a single tab
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instead of an arbitrary amount of space.
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.It Fl d Ar depth
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Recursively display any children of the dataset, limiting the recursion to
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.Ar depth .
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A depth of
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.Sy 1
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will display only the dataset and its direct children.
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.It Fl o Ar field
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A comma-separated list of columns to display, defaults to
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.Sy name , Ns Sy property , Ns Sy value , Ns Sy source .
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.It Fl p
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Display numbers in parsable
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.Pq exact
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values.
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.It Fl r
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Recursively display properties for any children.
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.It Fl s Ar source
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A comma-separated list of sources to display.
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Those properties coming from a source other than those in this list are ignored.
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Each source must be one of the following:
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.Sy local , default , inherited , temporary , received , No or Sy none .
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The default value is all sources.
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.It Fl t Ar type
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A comma-separated list of types to display, where
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.Ar type
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is one of
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.Sy filesystem , snapshot , volume , bookmark , No or Sy all .
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.Sy fs ,
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.Sy snap ,
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or
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.Sy vol
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can be used as aliases for
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.Sy filesystem ,
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.Sy snapshot ,
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or
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.Sy volume .
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.El
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.It Xo
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.Nm zfs
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.Cm inherit
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.Op Fl rS
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.Ar property Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns …
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.Xc
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Clears the specified property, causing it to be inherited from an ancestor,
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restored to default if no ancestor has the property set, or with the
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.Fl S
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option reverted to the received value if one exists.
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See
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.Xr zfsprops 7
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for a listing of default values, and details on which properties can be
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inherited.
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.Bl -tag -width "-r"
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.It Fl r
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Recursively inherit the given property for all children.
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.It Fl S
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Revert the property to the received value, if one exists;
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otherwise, for non-inheritable properties, to the default;
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otherwise, operate as if the
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.Fl S
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option was not specified.
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.El
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.El
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.
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.Sh EXAMPLES
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.\" These are, respectively, examples 1, 4, 6, 7, 11, 14, 16 from zfs.8
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.\" Make sure to update them bidirectionally
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.Ss Example 1 : No Creating a ZFS File System Hierarchy
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The following commands create a file system named
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.Ar pool/home
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and a file system named
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.Ar pool/home/bob .
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The mount point
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.Pa /export/home
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is set for the parent file system, and is automatically inherited by the child
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file system.
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.Dl # Nm zfs Cm create Ar pool/home
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.Dl # Nm zfs Cm set Sy mountpoint Ns = Ns Ar /export/home pool/home
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.Dl # Nm zfs Cm create Ar pool/home/bob
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.
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.Ss Example 2 : No Disabling and Enabling File System Compression
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The following command disables the
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.Sy compression
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property for all file systems under
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.Ar pool/home .
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The next command explicitly enables
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.Sy compression
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for
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.Ar pool/home/anne .
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.Dl # Nm zfs Cm set Sy compression Ns = Ns Sy off Ar pool/home
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.Dl # Nm zfs Cm set Sy compression Ns = Ns Sy on Ar pool/home/anne
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.
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.Ss Example 3 : No Setting a Quota on a ZFS File System
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The following command sets a quota of 50 Gbytes for
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.Ar pool/home/bob :
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.Dl # Nm zfs Cm set Sy quota Ns = Ns Ar 50G pool/home/bob
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.
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.Ss Example 4 : No Listing ZFS Properties
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The following command lists all properties for
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.Ar pool/home/bob :
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.Bd -literal -compact -offset Ds
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.No # Nm zfs Cm get Sy all Ar pool/home/bob
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NAME PROPERTY VALUE SOURCE
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pool/home/bob type filesystem -
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pool/home/bob creation Tue Jul 21 15:53 2009 -
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pool/home/bob used 21K -
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pool/home/bob available 20.0G -
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pool/home/bob referenced 21K -
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pool/home/bob compressratio 1.00x -
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pool/home/bob mounted yes -
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pool/home/bob quota 20G local
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pool/home/bob reservation none default
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pool/home/bob recordsize 128K default
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pool/home/bob mountpoint /pool/home/bob default
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pool/home/bob sharenfs off default
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pool/home/bob checksum on default
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pool/home/bob compression on local
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pool/home/bob atime on default
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pool/home/bob devices on default
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pool/home/bob exec on default
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pool/home/bob setuid on default
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pool/home/bob readonly off default
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pool/home/bob zoned off default
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pool/home/bob snapdir hidden default
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pool/home/bob acltype off default
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pool/home/bob aclmode discard default
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pool/home/bob aclinherit restricted default
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pool/home/bob canmount on default
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pool/home/bob xattr on default
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pool/home/bob copies 1 default
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pool/home/bob version 4 -
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pool/home/bob utf8only off -
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pool/home/bob normalization none -
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pool/home/bob casesensitivity sensitive -
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pool/home/bob vscan off default
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pool/home/bob nbmand off default
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pool/home/bob sharesmb off default
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pool/home/bob refquota none default
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pool/home/bob refreservation none default
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pool/home/bob primarycache all default
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pool/home/bob secondarycache all default
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pool/home/bob usedbysnapshots 0 -
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pool/home/bob usedbydataset 21K -
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pool/home/bob usedbychildren 0 -
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pool/home/bob usedbyrefreservation 0 -
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.Ed
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.Pp
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The following command gets a single property value:
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.Bd -literal -compact -offset Ds
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.No # Nm zfs Cm get Fl H o Sy value compression Ar pool/home/bob
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on
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.Ed
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.Pp
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The following command gets a single property value recursively in JSON format:
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.Bd -literal -compact -offset Ds
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.No # Nm zfs Cm get Fl j Fl r Sy mountpoint Ar pool/home | Nm jq
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{
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"output_version": {
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"command": "zfs get",
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"vers_major": 0,
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"vers_minor": 1
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},
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"datasets": {
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"pool/home": {
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"name": "pool/home",
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"type": "FILESYSTEM",
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"pool": "pool",
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"createtxg": "10",
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"properties": {
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"mountpoint": {
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"value": "/pool/home",
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"source": {
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"type": "DEFAULT",
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"data": "-"
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}
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}
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}
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},
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"pool/home/bob": {
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"name": "pool/home/bob",
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"type": "FILESYSTEM",
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"pool": "pool",
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"createtxg": "1176",
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"properties": {
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"mountpoint": {
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"value": "/pool/home/bob",
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"source": {
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"type": "DEFAULT",
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"data": "-"
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}
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}
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}
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}
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}
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}
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.Ed
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.Pp
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The following command lists all properties with local settings for
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.Ar pool/home/bob :
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.Bd -literal -compact -offset Ds
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.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
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NAME PROPERTY VALUE
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pool/home/bob quota 20G
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pool/home/bob compression on
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.Ed
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.
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.Ss Example 5 : No Inheriting ZFS Properties
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The following command causes
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.Ar pool/home/bob No and Ar pool/home/anne
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to inherit the
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.Sy checksum
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property from their parent.
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.Dl # Nm zfs Cm inherit Sy checksum Ar pool/home/bob pool/home/anne
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.
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.Ss Example 6 : No Setting User Properties
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The following example sets the user-defined
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.Ar com.example : Ns Ar department
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property for a dataset:
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.Dl # Nm zfs Cm set Ar com.example : Ns Ar department Ns = Ns Ar 12345 tank/accounting
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.
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.Ss Example 7 : No Setting sharenfs Property Options on a ZFS File System
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The following commands show how to set
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.Sy sharenfs
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property options to enable read-write
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access for a set of IP addresses and to enable root access for system
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.Qq neo
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on the
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.Ar tank/home
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file system:
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.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
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.Pp
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If you are using DNS for host name resolution,
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specify the fully-qualified hostname.
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.
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.Sh SEE ALSO
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.Xr zfsprops 7 ,
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.Xr zfs-list 8
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