1.\" 2.\" CDDL HEADER START 3.\" 4.\" The contents of this file are subject to the terms of the 5.\" Common Development and Distribution License (the "License"). 6.\" You may not use this file except in compliance with the License. 7.\" 8.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9.\" or http://www.opensolaris.org/os/licensing. 10.\" See the License for the specific language governing permissions 11.\" and limitations under the License. 12.\" 13.\" When distributing Covered Code, include this CDDL HEADER in each 14.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15.\" If applicable, add the following below this CDDL HEADER, with the 16.\" fields enclosed by brackets "[]" replaced with your own identifying 17.\" information: Portions Copyright [yyyy] [name of copyright owner] 18.\" 19.\" CDDL HEADER END 20.\" 21.\" 22.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. 23.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. 24.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. 25.\" Copyright (c) 2017 Datto Inc. 26.\" Copyright (c) 2018 George Melikov. All Rights Reserved. 27.\" Copyright 2017 Nexenta Systems, Inc. 28.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. 29.\" 30.Dd August 9, 2019 31.Dt ZPOOL-SPLIT 8 32.Os 33.Sh NAME 34.Nm zpool Ns Pf - Cm split 35.Nd Split devices off a ZFS storage pool creating a new pool 36.Sh SYNOPSIS 37.Nm 38.Cm split 39.Op Fl gLlnP 40.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... 41.Op Fl R Ar root 42.Ar pool newpool 43.Oo Ar device Oc Ns ... 44.Sh DESCRIPTION 45.Bl -tag -width Ds 46.It Xo 47.Nm 48.Cm split 49.Op Fl gLlnP 50.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... 51.Op Fl R Ar root 52.Ar pool newpool 53.Op Ar device ... 54.Xc 55Splits devices off 56.Ar pool 57creating 58.Ar newpool . 59All vdevs in 60.Ar pool 61must be mirrors and the pool must not be in the process of resilvering. 62At the time of the split, 63.Ar newpool 64will be a replica of 65.Ar pool . 66By default, the 67last device in each mirror is split from 68.Ar pool 69to create 70.Ar newpool . 71.Pp 72The optional device specification causes the specified device(s) to be 73included in the new 74.Ar pool 75and, should any devices remain unspecified, 76the last device in each mirror is used as would be by default. 77.Bl -tag -width Ds 78.It Fl g 79Display vdev GUIDs instead of the normal device names. These GUIDs 80can be used in place of device names for the zpool 81detach/offline/remove/replace commands. 82.It Fl L 83Display real paths for vdevs resolving all symbolic links. This can 84be used to look up the current block device name regardless of the 85.Pa /dev/disk/ 86path used to open it. 87.It Fl l 88Indicates that this command will request encryption keys for all encrypted 89datasets it attempts to mount as it is bringing the new pool online. Note that 90if any datasets have a 91.Sy keylocation 92of 93.Sy prompt 94this command will block waiting for the keys to be entered. Without this flag 95encrypted datasets will be left unavailable until the keys are loaded. 96.It Fl n 97Do dry run, do not actually perform the split. 98Print out the expected configuration of 99.Ar newpool . 100.It Fl P 101Display full paths for vdevs instead of only the last component of 102the path. This can be used in conjunction with the 103.Fl L 104flag. 105.It Fl o Ar property Ns = Ns Ar value 106Sets the specified property for 107.Ar newpool . 108See the 109.Xr zpoolprops 110manual page for more information on the available pool properties. 111.It Fl R Ar root 112Set 113.Sy altroot 114for 115.Ar newpool 116to 117.Ar root 118and automatically import it. 119.El 120.El 121.Sh SEE ALSO 122.Xr zpool-import 8 , 123.Xr zpool-list 8 , 124.Xr zpool-remove 8 125