212 lines
6.1 KiB
Groff
212 lines
6.1 KiB
Groff
.\"
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.\" CDDL HEADER START
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.\" The contents of this file are subject to the terms of the
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.\" CDDL HEADER END
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.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
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.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
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.\" Copyright (c) 2017 Datto Inc.
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.\" Copyright (c) 2018 George Melikov. All Rights Reserved.
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.\" Copyright 2017 Nexenta Systems, Inc.
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.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
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.\" Copyright (c) 2021, Colm Buckley <colm@tuatha.org>
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.\"
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.Dd June 2, 2021
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.Dt ZPOOL-CREATE 8
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.Os
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.
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.Sh NAME
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.Nm zpool-create
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.Nd create ZFS storage pool
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.Sh SYNOPSIS
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.Nm zpool
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.Cm create
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.Op Fl dfn
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.Op Fl m Ar mountpoint
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.Oo Fl o Ar property Ns = Ns Ar value Oc Ns …
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.Oo Fl o Sy feature@ Ns Ar feature Ns = Ns Ar value Oc
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.Op Fl o Ar compatibility Ns = Ns Sy off Ns | Ns Sy legacy Ns | Ns Ar file Ns Oo , Ns Ar file Oc Ns …
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.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns …
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.Op Fl R Ar root
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.Op Fl t Ar tname
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.Ar pool
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.Ar vdev Ns …
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.
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.Sh DESCRIPTION
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Creates a new storage pool containing the virtual devices specified on the
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command line.
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The pool name must begin with a letter, and can only contain
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alphanumeric characters as well as the underscore
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.Pq Qq Sy _ ,
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dash
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.Pq Qq Sy \&- ,
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colon
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.Pq Qq Sy \&: ,
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space
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.Pq Qq Sy \&\ ,
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and period
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.Pq Qq Sy \&. .
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The pool names
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.Sy mirror ,
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.Sy raidz ,
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.Sy draid ,
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.Sy spare
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and
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.Sy log
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are reserved, as are names beginning with
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.Sy mirror ,
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.Sy raidz ,
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.Sy draid ,
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and
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.Sy spare .
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The
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.Ar vdev
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specification is described in the
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.Sx Virtual Devices
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section of
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.Xr zpoolconcepts 7 .
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.Pp
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The command attempts to verify that each device specified is accessible and not
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currently in use by another subsystem.
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However this check is not robust enough
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to detect simultaneous attempts to use a new device in different pools, even if
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.Sy multihost Ns = Sy enabled .
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The administrator must ensure, that simultaneous invocations of any combination of
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.Nm zpool Cm replace ,
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.Nm zpool Cm create ,
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.Nm zpool Cm add ,
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or
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.Nm zpool Cm labelclear ,
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do not refer to the same device.
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Using the same device in two pools will result in pool corruption.
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.Pp
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There are some uses, such as being currently mounted, or specified as the
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dedicated dump device, that prevents a device from ever being used by ZFS.
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Other uses, such as having a preexisting UFS file system, can be overridden with
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.Fl f .
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.Pp
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The command also checks that the replication strategy for the pool is
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consistent.
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An attempt to combine redundant and non-redundant storage in a single pool,
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or to mix disks and files, results in an error unless
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.Fl f
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is specified.
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The use of differently-sized devices within a single raidz or mirror group is
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also flagged as an error unless
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.Fl f
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is specified.
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.Pp
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Unless the
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.Fl R
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option is specified, the default mount point is
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.Pa / Ns Ar pool .
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The mount point must not exist or must be empty, or else the root dataset
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will not be able to be be mounted.
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This can be overridden with the
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.Fl m
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option.
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.Pp
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By default all supported features are enabled on the new pool.
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The
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.Fl d
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option and the
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.Fl o Ar compatibility
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property
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.Pq e.g Fl o Sy compatibility Ns = Ns Ar 2020
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can be used to restrict the features that are enabled, so that the
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pool can be imported on other releases of ZFS.
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.Bl -tag -width "-t tname"
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.It Fl d
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Do not enable any features on the new pool.
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Individual features can be enabled by setting their corresponding properties to
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.Sy enabled
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with
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.Fl o .
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See
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.Xr zpool-features 7
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for details about feature properties.
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.It Fl f
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Forces use of
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.Ar vdev Ns s ,
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even if they appear in use or specify a conflicting replication level.
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Not all devices can be overridden in this manner.
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.It Fl m Ar mountpoint
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Sets the mount point for the root dataset.
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The default mount point is
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.Pa /pool
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or
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.Pa altroot/pool
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if
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.Sy altroot
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is specified.
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The mount point must be an absolute path,
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.Sy legacy ,
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or
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.Sy none .
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For more information on dataset mount points, see
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.Xr zfsprops 7 .
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.It Fl n
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Displays the configuration that would be used without actually creating the
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pool.
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The actual pool creation can still fail due to insufficient privileges or
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device sharing.
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.It Fl o Ar property Ns = Ns Ar value
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Sets the given pool properties.
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See
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.Xr zpoolprops 7
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for a list of valid properties that can be set.
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.It Fl o Ar compatibility Ns = Ns Sy off Ns | Ns Sy legacy Ns | Ns Ar file Ns Oo , Ns Ar file Oc Ns …
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Specifies compatibility feature sets.
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See
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.Xr zpool-features 7
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for more information about compatibility feature sets.
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.It Fl o Sy feature@ Ns Ar feature Ns = Ns Ar value
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Sets the given pool feature.
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See the
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.Xr zpool-features 7
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section for a list of valid features that can be set.
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Value can be either disabled or enabled.
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.It Fl O Ar file-system-property Ns = Ns Ar value
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Sets the given file system properties in the root file system of the pool.
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See
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.Xr zfsprops 7
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for a list of valid properties that can be set.
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.It Fl R Ar root
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Equivalent to
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.Fl o Sy cachefile Ns = Ns Sy none Fl o Sy altroot Ns = Ns Ar root
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.It Fl t Ar tname
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Sets the in-core pool name to
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.Ar tname
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while the on-disk name will be the name specified as
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.Ar pool .
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This will set the default of the
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.Sy cachefile
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property to
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.Sy none .
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This is intended
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to handle name space collisions when creating pools for other systems,
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such as virtual machines or physical machines whose pools live on network
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block devices.
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.El
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.
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.Sh SEE ALSO
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.Xr zpool-destroy 8 ,
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.Xr zpool-export 8 ,
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.Xr zpool-import 8
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