742 lines
24 KiB
Groff
742 lines
24 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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.\" CDDL HEADER END
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.\"
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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) 2011, Pawel Jakub Dawidek <pjd@FreeBSD.org>
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.\" Copyright (c) 2012, Glen Barber <gjb@FreeBSD.org>
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.\" Copyright (c) 2012, Bryan Drewery <bdrewery@FreeBSD.org>
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.\" Copyright (c) 2013, Steven Hartland <smh@FreeBSD.org>
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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 (c) 2014, Xin LI <delphij@FreeBSD.org>
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.\" Copyright (c) 2014-2015, The FreeBSD Foundation, All Rights Reserved.
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.\" Copyright (c) 2016 Nexenta Systems, Inc. All Rights Reserved.
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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 June 30, 2019
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.Dt ZFS 8
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|
.Os
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|
.Sh NAME
|
|
.Nm zfs
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|
.Nd configures ZFS file systems
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Fl ?V
|
|
.Nm
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|
.Cm version
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|
.Nm
|
|
.Cm <subcommand>
|
|
.Op Ar <args>
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command configures ZFS datasets within a ZFS storage pool, as described in
|
|
.Xr zpool 8 .
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|
A dataset is identified by a unique path within the ZFS namespace.
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|
For example:
|
|
.Bd -literal
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|
pool/{filesystem,volume,snapshot}
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|
.Ed
|
|
.Pp
|
|
where the maximum length of a dataset name is
|
|
.Dv MAXNAMELEN
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|
.Pq 256 bytes
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|
and the maximum amount of nesting allowed in a path is 50 levels deep.
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|
.Pp
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|
A dataset can be one of the following:
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|
.Bl -tag -width "file system"
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|
.It Sy file system
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|
A ZFS dataset of type
|
|
.Sy filesystem
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|
can be mounted within the standard system namespace and behaves like other file
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|
systems.
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|
While ZFS file systems are designed to be POSIX compliant, known issues exist
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|
that prevent compliance in some cases.
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|
Applications that depend on standards conformance might fail due to non-standard
|
|
behavior when checking file system free space.
|
|
.It Sy volume
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|
A logical volume exported as a raw or block device.
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|
This type of dataset should only be used when a block device is required.
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|
File systems are typically used in most environments.
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|
.It Sy snapshot
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|
A read-only version of a file system or volume at a given point in time.
|
|
It is specified as
|
|
.Ar filesystem Ns @ Ns Ar name
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|
or
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|
.Ar volume Ns @ Ns Ar name .
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|
.It Sy bookmark
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|
Much like a
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|
.Sy snapshot ,
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|
but without the hold on on-disk data.
|
|
It can be used as the source of a send (but not for a receive). It is specified as
|
|
.Ar filesystem Ns # Ns Ar name
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|
or
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|
.Ar volume Ns # Ns Ar name .
|
|
.El
|
|
.Pp
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|
For details see
|
|
.Xr zfsconcepts 8 .
|
|
.Ss Properties
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|
Properties are divided into two types, native properties and user-defined
|
|
.Po or
|
|
.Qq user
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|
.Pc
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|
properties.
|
|
Native properties either export internal statistics or control ZFS behavior.
|
|
In addition, native properties are either editable or read-only.
|
|
User properties have no effect on ZFS behavior, but you can use them to annotate
|
|
datasets in a way that is meaningful in your environment.
|
|
For more information about properties, see the
|
|
.Xr zfsprops 8 man page.
|
|
.Ss Encryption
|
|
Enabling the
|
|
.Sy encryption
|
|
feature allows for the creation of encrypted filesystems and volumes.
|
|
ZFS will encrypt file and zvol data, file attributes, ACLs, permission bits,
|
|
directory listings, FUID mappings, and
|
|
.Sy userused
|
|
/
|
|
.Sy groupused
|
|
data.
|
|
For an overview of encryption see the
|
|
.Xr zfs-load-key 8 command manual.
|
|
.Sh SUBCOMMANDS
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|
All subcommands that modify state are logged persistently to the pool in their
|
|
original form.
|
|
.Bl -tag -width ""
|
|
.It Nm Fl ?
|
|
Displays a help message.
|
|
.It Xo
|
|
.Nm
|
|
.Fl V , -version
|
|
.Xc
|
|
An alias for the
|
|
.Nm zfs Cm version
|
|
subcommand.
|
|
.It Xo
|
|
.Nm
|
|
.Cm version
|
|
.Xc
|
|
Displays the software version of the
|
|
.Nm
|
|
userland utility and the zfs kernel module.
|
|
.El
|
|
.Ss Dataset Management
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-list 8
|
|
Lists the property information for the given datasets in tabular form.
|
|
.It Xr zfs-create 8
|
|
Creates a new ZFS file system or volume.
|
|
.It Xr zfs-destroy 8
|
|
Destroys the given dataset(s), snapshot(s), or bookmark.
|
|
.It Xr zfs-rename 8
|
|
Renames the given dataset (filesystem or snapshot).
|
|
.It Xr zfs-upgrade 8
|
|
Manage upgrading the on-disk version of filesystems.
|
|
.El
|
|
.Ss Snapshots
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|
.Bl -tag -width ""
|
|
.It Xr zfs-snapshot 8
|
|
Creates snapshots with the given names.
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|
.It Xr zfs-rollback 8
|
|
Roll back the given dataset to a previous snapshot.
|
|
.It Xo
|
|
.Xr zfs-hold 8 /
|
|
.Xr zfs-release 8
|
|
.Xc
|
|
Add or remove a hold reference to the specified snapshot or snapshots.
|
|
If a hold exists on a snapshot, attempts to destroy that snapshot by using the
|
|
.Nm zfs Cm destroy
|
|
command return
|
|
.Er EBUSY .
|
|
.It Xr zfs-diff 8
|
|
Display the difference between a snapshot of a given filesystem and another
|
|
snapshot of that filesystem from a later time or the current contents of the
|
|
filesystem.
|
|
.El
|
|
.Ss Clones
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-clone 8
|
|
Creates a clone of the given snapshot.
|
|
.It Xr zfs-promote 8
|
|
Promotes a clone file system to no longer be dependent on its
|
|
.Qq origin
|
|
snapshot.
|
|
.El
|
|
.Ss Send & Receive
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-send 8
|
|
Generate a send stream, which may be of a filesystem, and may be incremental
|
|
from a bookmark.
|
|
.It Xr zfs-receive 8
|
|
Creates a snapshot whose contents are as specified in the stream provided on
|
|
standard input.
|
|
If a full stream is received, then a new file system is created as well.
|
|
Streams are created using the
|
|
.Xr zfs-send 8
|
|
subcommand, which by default creates a full stream.
|
|
.It Xr zfs-bookmark 8
|
|
Creates a new bookmark of the given snapshot or bookmark.
|
|
Bookmarks mark the point in time when the snapshot was created, and can be used
|
|
as the incremental source for a
|
|
.Nm zfs Cm send
|
|
command.
|
|
.It Xr zfs-redact 8
|
|
Generate a new redaction bookmark.
|
|
This feature can be used to allow clones of a filesystem to be made available on
|
|
a remote system, in the case where their parent need not (or needs to not) be
|
|
usable.
|
|
.El
|
|
.Ss Properties
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-get 8
|
|
Displays properties for the given datasets.
|
|
.It Xr zfs-set 8
|
|
Sets the property or list of properties to the given value(s) for each dataset.
|
|
.It Xr zfs-inherit 8
|
|
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.
|
|
.El
|
|
.Ss Quotas
|
|
.Bl -tag -width ""
|
|
.It Xo
|
|
.Xr zfs-userspace 8 /
|
|
.Xr zfs-groupspace 8 /
|
|
.Xr zfs-projectspace 8
|
|
.Xc
|
|
Displays space consumed by, and quotas on, each user, group, or project
|
|
in the specified filesystem or snapshot.
|
|
.It Xr zfs-project 8
|
|
List, set, or clear project ID and/or inherit flag on the file(s) or directories.
|
|
.El
|
|
.Ss Mountpoints
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-mount 8
|
|
Displays all ZFS file systems currently mounted, or mount ZFS filesystem
|
|
on a path described by its
|
|
.Sy mountpoint
|
|
property.
|
|
.It Xr zfs-unmount 8
|
|
Unmounts currently mounted ZFS file systems.
|
|
.El
|
|
.Ss Shares
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-share 8
|
|
Shares available ZFS file systems.
|
|
.It Xr zfs-unshare 8
|
|
Unshares currently shared ZFS file systems.
|
|
.El
|
|
.Ss Delegated Administration
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-allow 8
|
|
Delegate permissions on the specified filesystem or volume.
|
|
.It Xr zfs-unallow 8
|
|
Remove delegated permissions on the specified filesystem or volume.
|
|
.El
|
|
.Ss Encryption
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-change-key 8
|
|
Add or change an encryption key on the specified dataset.
|
|
.It Xr zfs-load-key 8
|
|
Load the key for the specified encrypted dataset, enabling access.
|
|
.It Xr zfs-unload-key 8
|
|
Unload a key for the specified dataset, removing the ability to access the dataset.
|
|
.El
|
|
.Ss Channel Programs
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-program 8
|
|
Execute ZFS administrative operations
|
|
programmatically via a Lua script-language channel program.
|
|
.El
|
|
.Ss Jails
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-jail 8
|
|
Attaches a filesystem to a jail.
|
|
.It Xr zfs-unjail 8
|
|
Detaches a filesystem from a jail.
|
|
.El
|
|
.Ss Waiting
|
|
.Bl -tag -width ""
|
|
.It Xr zfs-wait 8
|
|
Wait for background activity in a filesystem to complete.
|
|
.El
|
|
.Sh EXIT STATUS
|
|
The
|
|
.Nm
|
|
utility exits 0 on success, 1 if an error occurs, and 2 if invalid command line
|
|
options were specified.
|
|
.Sh EXAMPLES
|
|
.Bl -tag -width ""
|
|
.It Sy Example 1 No Creating a ZFS File System Hierarchy
|
|
The following commands create a file system named
|
|
.Em pool/home
|
|
and a file system named
|
|
.Em 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.
|
|
.Bd -literal
|
|
# zfs create pool/home
|
|
# zfs set mountpoint=/export/home pool/home
|
|
# zfs create pool/home/bob
|
|
.Ed
|
|
.It Sy Example 2 No Creating a ZFS Snapshot
|
|
The following command creates a snapshot named
|
|
.Sy yesterday .
|
|
This snapshot is mounted on demand in the
|
|
.Pa .zfs/snapshot
|
|
directory at the root of the
|
|
.Em pool/home/bob
|
|
file system.
|
|
.Bd -literal
|
|
# zfs snapshot pool/home/bob@yesterday
|
|
.Ed
|
|
.It Sy Example 3 No Creating and Destroying Multiple Snapshots
|
|
The following command creates snapshots named
|
|
.Sy yesterday
|
|
of
|
|
.Em pool/home
|
|
and all of its descendent file systems.
|
|
Each snapshot is mounted on demand in the
|
|
.Pa .zfs/snapshot
|
|
directory at the root of its file system.
|
|
The second command destroys the newly created snapshots.
|
|
.Bd -literal
|
|
# zfs snapshot -r pool/home@yesterday
|
|
# zfs destroy -r pool/home@yesterday
|
|
.Ed
|
|
.It Sy Example 4 No Disabling and Enabling File System Compression
|
|
The following command disables the
|
|
.Sy compression
|
|
property for all file systems under
|
|
.Em pool/home .
|
|
The next command explicitly enables
|
|
.Sy compression
|
|
for
|
|
.Em pool/home/anne .
|
|
.Bd -literal
|
|
# zfs set compression=off pool/home
|
|
# zfs set compression=on pool/home/anne
|
|
.Ed
|
|
.It Sy Example 5 No Listing ZFS Datasets
|
|
The following command lists all active file systems and volumes in the system.
|
|
Snapshots are displayed if the
|
|
.Sy listsnaps
|
|
property is
|
|
.Sy on .
|
|
The default is
|
|
.Sy off .
|
|
See
|
|
.Xr zpool 8
|
|
for more information on pool properties.
|
|
.Bd -literal
|
|
# zfs list
|
|
NAME USED AVAIL REFER MOUNTPOINT
|
|
pool 450K 457G 18K /pool
|
|
pool/home 315K 457G 21K /export/home
|
|
pool/home/anne 18K 457G 18K /export/home/anne
|
|
pool/home/bob 276K 457G 276K /export/home/bob
|
|
.Ed
|
|
.It Sy Example 6 No Setting a Quota on a ZFS File System
|
|
The following command sets a quota of 50 Gbytes for
|
|
.Em pool/home/bob .
|
|
.Bd -literal
|
|
# zfs set quota=50G pool/home/bob
|
|
.Ed
|
|
.It Sy Example 7 No Listing ZFS Properties
|
|
The following command lists all properties for
|
|
.Em pool/home/bob .
|
|
.Bd -literal
|
|
# zfs get all 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
|
|
# zfs get -H -o value compression pool/home/bob
|
|
on
|
|
.Ed
|
|
The following command lists all properties with local settings for
|
|
.Em pool/home/bob .
|
|
.Bd -literal
|
|
# zfs get -r -s local -o name,property,value all pool/home/bob
|
|
NAME PROPERTY VALUE
|
|
pool/home/bob quota 20G
|
|
pool/home/bob compression on
|
|
.Ed
|
|
.It Sy Example 8 No Rolling Back a ZFS File System
|
|
The following command reverts the contents of
|
|
.Em pool/home/anne
|
|
to the snapshot named
|
|
.Sy yesterday ,
|
|
deleting all intermediate snapshots.
|
|
.Bd -literal
|
|
# zfs rollback -r pool/home/anne@yesterday
|
|
.Ed
|
|
.It Sy Example 9 No Creating a ZFS Clone
|
|
The following command creates a writable file system whose initial contents are
|
|
the same as
|
|
.Em pool/home/bob@yesterday .
|
|
.Bd -literal
|
|
# zfs clone pool/home/bob@yesterday pool/clone
|
|
.Ed
|
|
.It Sy Example 10 No Promoting a ZFS Clone
|
|
The following commands illustrate how to test out changes to a file system, and
|
|
then replace the original file system with the changed one, using clones, clone
|
|
promotion, and renaming:
|
|
.Bd -literal
|
|
# zfs create pool/project/production
|
|
populate /pool/project/production with data
|
|
# zfs snapshot pool/project/production@today
|
|
# zfs clone pool/project/production@today pool/project/beta
|
|
make changes to /pool/project/beta and test them
|
|
# zfs promote pool/project/beta
|
|
# zfs rename pool/project/production pool/project/legacy
|
|
# zfs rename pool/project/beta pool/project/production
|
|
once the legacy version is no longer needed, it can be destroyed
|
|
# zfs destroy pool/project/legacy
|
|
.Ed
|
|
.It Sy Example 11 No Inheriting ZFS Properties
|
|
The following command causes
|
|
.Em pool/home/bob
|
|
and
|
|
.Em pool/home/anne
|
|
to inherit the
|
|
.Sy checksum
|
|
property from their parent.
|
|
.Bd -literal
|
|
# zfs inherit checksum pool/home/bob pool/home/anne
|
|
.Ed
|
|
.It Sy Example 12 No Remotely Replicating ZFS Data
|
|
The following commands send a full stream and then an incremental stream to a
|
|
remote machine, restoring them into
|
|
.Em poolB/received/fs@a
|
|
and
|
|
.Em poolB/received/fs@b ,
|
|
respectively.
|
|
.Em poolB
|
|
must contain the file system
|
|
.Em poolB/received ,
|
|
and must not initially contain
|
|
.Em poolB/received/fs .
|
|
.Bd -literal
|
|
# zfs send pool/fs@a | \e
|
|
ssh host zfs receive poolB/received/fs@a
|
|
# zfs send -i a pool/fs@b | \e
|
|
ssh host zfs receive poolB/received/fs
|
|
.Ed
|
|
.It Sy Example 13 No Using the zfs receive -d Option
|
|
The following command sends a full stream of
|
|
.Em poolA/fsA/fsB@snap
|
|
to a remote machine, receiving it into
|
|
.Em poolB/received/fsA/fsB@snap .
|
|
The
|
|
.Em fsA/fsB@snap
|
|
portion of the received snapshot's name is determined from the name of the sent
|
|
snapshot.
|
|
.Em poolB
|
|
must contain the file system
|
|
.Em poolB/received .
|
|
If
|
|
.Em poolB/received/fsA
|
|
does not exist, it is created as an empty file system.
|
|
.Bd -literal
|
|
# zfs send poolA/fsA/fsB@snap | \e
|
|
ssh host zfs receive -d poolB/received
|
|
.Ed
|
|
.It Sy Example 14 No Setting User Properties
|
|
The following example sets the user-defined
|
|
.Sy com.example:department
|
|
property for a dataset.
|
|
.Bd -literal
|
|
# zfs set com.example:department=12345 tank/accounting
|
|
.Ed
|
|
.It Sy Example 15 No Performing a Rolling Snapshot
|
|
The following example shows how to maintain a history of snapshots with a
|
|
consistent naming scheme.
|
|
To keep a week's worth of snapshots, the user destroys the oldest snapshot,
|
|
renames the remaining snapshots, and then creates a new snapshot, as follows:
|
|
.Bd -literal
|
|
# zfs destroy -r pool/users@7daysago
|
|
# zfs rename -r pool/users@6daysago @7daysago
|
|
# zfs rename -r pool/users@5daysago @6daysago
|
|
# zfs rename -r pool/users@4daysago @5daysago
|
|
# zfs rename -r pool/users@3daysago @4daysago
|
|
# zfs rename -r pool/users@2daysago @3daysago
|
|
# zfs rename -r pool/users@yesterday @2daysago
|
|
# zfs rename -r pool/users@today @yesterday
|
|
# zfs snapshot -r pool/users@today
|
|
.Ed
|
|
.It Sy Example 16 No Setting sharenfs Property Options on a ZFS File System
|
|
The following commands show how to set
|
|
.Sy sharenfs
|
|
property options to enable
|
|
.Sy rw
|
|
access for a set of
|
|
.Sy IP
|
|
addresses and to enable root access for system
|
|
.Sy neo
|
|
on the
|
|
.Em tank/home
|
|
file system.
|
|
.Bd -literal
|
|
# zfs set sharenfs='rw=@123.123.0.0/16,root=neo' tank/home
|
|
.Ed
|
|
.Pp
|
|
If you are using
|
|
.Sy DNS
|
|
for host name resolution, specify the fully qualified hostname.
|
|
.It Sy Example 17 No Delegating ZFS Administration Permissions on a ZFS Dataset
|
|
The following example shows how to set permissions so that user
|
|
.Sy cindys
|
|
can create, destroy, mount, and take snapshots on
|
|
.Em tank/cindys .
|
|
The permissions on
|
|
.Em tank/cindys
|
|
are also displayed.
|
|
.Bd -literal
|
|
# zfs allow cindys create,destroy,mount,snapshot tank/cindys
|
|
# zfs allow tank/cindys
|
|
---- Permissions on tank/cindys --------------------------------------
|
|
Local+Descendent permissions:
|
|
user cindys create,destroy,mount,snapshot
|
|
.Ed
|
|
.Pp
|
|
Because the
|
|
.Em tank/cindys
|
|
mount point permission is set to 755 by default, user
|
|
.Sy cindys
|
|
will be unable to mount file systems under
|
|
.Em tank/cindys .
|
|
Add an ACE similar to the following syntax to provide mount point access:
|
|
.Bd -literal
|
|
# chmod A+user:cindys:add_subdirectory:allow /tank/cindys
|
|
.Ed
|
|
.It Sy Example 18 No Delegating Create Time Permissions on a ZFS Dataset
|
|
The following example shows how to grant anyone in the group
|
|
.Sy staff
|
|
to create file systems in
|
|
.Em tank/users .
|
|
This syntax also allows staff members to destroy their own file systems, but not
|
|
destroy anyone else's file system.
|
|
The permissions on
|
|
.Em tank/users
|
|
are also displayed.
|
|
.Bd -literal
|
|
# zfs allow staff create,mount tank/users
|
|
# zfs allow -c destroy tank/users
|
|
# zfs allow tank/users
|
|
---- Permissions on tank/users ---------------------------------------
|
|
Permission sets:
|
|
destroy
|
|
Local+Descendent permissions:
|
|
group staff create,mount
|
|
.Ed
|
|
.It Sy Example 19 No Defining and Granting a Permission Set on a ZFS Dataset
|
|
The following example shows how to define and grant a permission set on the
|
|
.Em tank/users
|
|
file system.
|
|
The permissions on
|
|
.Em tank/users
|
|
are also displayed.
|
|
.Bd -literal
|
|
# zfs allow -s @pset create,destroy,snapshot,mount tank/users
|
|
# zfs allow staff @pset tank/users
|
|
# zfs allow tank/users
|
|
---- Permissions on tank/users ---------------------------------------
|
|
Permission sets:
|
|
@pset create,destroy,mount,snapshot
|
|
Local+Descendent permissions:
|
|
group staff @pset
|
|
.Ed
|
|
.It Sy Example 20 No Delegating Property Permissions on a ZFS Dataset
|
|
The following example shows to grant the ability to set quotas and reservations
|
|
on the
|
|
.Em users/home
|
|
file system.
|
|
The permissions on
|
|
.Em users/home
|
|
are also displayed.
|
|
.Bd -literal
|
|
# zfs allow cindys quota,reservation users/home
|
|
# zfs allow users/home
|
|
---- Permissions on users/home ---------------------------------------
|
|
Local+Descendent permissions:
|
|
user cindys quota,reservation
|
|
cindys% zfs set quota=10G users/home/marks
|
|
cindys% zfs get quota users/home/marks
|
|
NAME PROPERTY VALUE SOURCE
|
|
users/home/marks quota 10G local
|
|
.Ed
|
|
.It Sy Example 21 No Removing ZFS Delegated Permissions on a ZFS Dataset
|
|
The following example shows how to remove the snapshot permission from the
|
|
.Sy staff
|
|
group on the
|
|
.Em tank/users
|
|
file system.
|
|
The permissions on
|
|
.Em tank/users
|
|
are also displayed.
|
|
.Bd -literal
|
|
# zfs unallow staff snapshot tank/users
|
|
# zfs allow tank/users
|
|
---- Permissions on tank/users ---------------------------------------
|
|
Permission sets:
|
|
@pset create,destroy,mount,snapshot
|
|
Local+Descendent permissions:
|
|
group staff @pset
|
|
.Ed
|
|
.It Sy Example 22 No Showing the differences between a snapshot and a ZFS Dataset
|
|
The following example shows how to see what has changed between a prior
|
|
snapshot of a ZFS dataset and its current state.
|
|
The
|
|
.Fl F
|
|
option is used to indicate type information for the files affected.
|
|
.Bd -literal
|
|
# zfs diff -F tank/test@before tank/test
|
|
M / /tank/test/
|
|
M F /tank/test/linked (+1)
|
|
R F /tank/test/oldname -> /tank/test/newname
|
|
- F /tank/test/deleted
|
|
+ F /tank/test/created
|
|
M F /tank/test/modified
|
|
.Ed
|
|
.It Sy Example 23 No Creating a bookmark
|
|
The following example create a bookmark to a snapshot.
|
|
This bookmark can then be used instead of snapshot in send streams.
|
|
.Bd -literal
|
|
# zfs bookmark rpool@snapshot rpool#bookmark
|
|
.Ed
|
|
.It Sy Example 24 No Setting sharesmb Property Options on a ZFS File System
|
|
The following example show how to share SMB filesystem through ZFS.
|
|
Note that that a user and his/her password must be given.
|
|
.Bd -literal
|
|
# smbmount //127.0.0.1/share_tmp /mnt/tmp \\
|
|
-o user=workgroup/turbo,password=obrut,uid=1000
|
|
.Ed
|
|
.Pp
|
|
Minimal
|
|
.Em /etc/samba/smb.conf
|
|
configuration required:
|
|
.Pp
|
|
Samba will need to listen to 'localhost' (127.0.0.1) for the ZFS utilities to
|
|
communicate with Samba.
|
|
This is the default behavior for most Linux distributions.
|
|
.Pp
|
|
Samba must be able to authenticate a user.
|
|
This can be done in a number of ways, depending on if using the system password file, LDAP or the Samba
|
|
specific smbpasswd file.
|
|
How to do this is outside the scope of this manual.
|
|
Please refer to the
|
|
.Xr smb.conf 5
|
|
man page for more information.
|
|
.Pp
|
|
See the
|
|
.Sy USERSHARE section
|
|
of the
|
|
.Xr smb.conf 5
|
|
man page for all configuration options in case you need to modify any options
|
|
to the share afterwards.
|
|
Do note that any changes done with the
|
|
.Xr net 8
|
|
command will be undone if the share is ever unshared (such as at a reboot etc).
|
|
.El
|
|
.Sh ENVIRONMENT VARIABLES
|
|
.Bl -tag -width "ZFS_MOUNT_HELPER"
|
|
.It Ev ZFS_MOUNT_HELPER
|
|
Cause
|
|
.Nm zfs mount
|
|
to use
|
|
.Em /bin/mount
|
|
to mount zfs datasets. This option is provided for backwards compatibility with older zfs versions.
|
|
.El
|
|
.Sh INTERFACE STABILITY
|
|
.Sy Committed .
|
|
.Sh SEE ALSO
|
|
.Xr attr 1 ,
|
|
.Xr gzip 1 ,
|
|
.Xr ssh 1 ,
|
|
.Xr chmod 2 ,
|
|
.Xr fsync 2 ,
|
|
.Xr stat 2 ,
|
|
.Xr write 2 ,
|
|
.Xr acl 5 ,
|
|
.Xr attributes 5 ,
|
|
.Xr exports 5 ,
|
|
.Xr exportfs 8 ,
|
|
.Xr mount 8 ,
|
|
.Xr net 8 ,
|
|
.Xr selinux 8 ,
|
|
.Xr zfsconcepts 8 ,
|
|
.Xr zfsprops 8 ,
|
|
.Xr zpool 8
|