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 https://opensource.org/licenses/CDDL-1.0. 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.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. 22.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. 23.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. 24.\" Copyright (c) 2017 Datto Inc. 25.\" Copyright (c) 2018 George Melikov. All Rights Reserved. 26.\" Copyright 2017 Nexenta Systems, Inc. 27.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. 28.\" 29.Dd June 2, 2021 30.Dt ZPOOL-SPLIT 8 31.Os 32. 33.Sh NAME 34.Nm zpool-split 35.Nd split devices off ZFS storage pool, creating new pool 36.Sh SYNOPSIS 37.Nm zpool 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. 45.Sh DESCRIPTION 46Splits devices off 47.Ar pool 48creating 49.Ar newpool . 50All vdevs in 51.Ar pool 52must be mirrors and the pool must not be in the process of resilvering. 53At the time of the split, 54.Ar newpool 55will be a replica of 56.Ar pool . 57By default, the 58last device in each mirror is split from 59.Ar pool 60to create 61.Ar newpool . 62.Pp 63The optional device specification causes the specified device(s) to be 64included in the new 65.Ar pool 66and, should any devices remain unspecified, 67the last device in each mirror is used as would be by default. 68.Bl -tag -width Ds 69.It Fl g 70Display vdev GUIDs instead of the normal device names. 71These GUIDs can be used in place of device names for the zpool 72detach/offline/remove/replace commands. 73.It Fl L 74Display real paths for vdevs resolving all symbolic links. 75This can be used to look up the current block device name regardless of the 76.Pa /dev/disk/ 77path used to open it. 78.It Fl l 79Indicates that this command will request encryption keys for all encrypted 80datasets it attempts to mount as it is bringing the new pool online. 81Note that if any datasets have 82.Sy keylocation Ns = Ns Sy prompt , 83this command will block waiting for the keys to be entered. 84Without this flag, encrypted datasets will be left unavailable until the keys are loaded. 85.It Fl n 86Do a dry-run 87.Pq Qq No-op 88split: do not actually perform it. 89Print out the expected configuration of 90.Ar newpool . 91.It Fl P 92Display full paths for vdevs instead of only the last component of 93the path. 94This can be used in conjunction with the 95.Fl L 96flag. 97.It Fl o Ar property Ns = Ns Ar value 98Sets the specified property for 99.Ar newpool . 100See the 101.Xr zpoolprops 7 102manual page for more information on the available pool properties. 103.It Fl R Ar root 104Set 105.Sy altroot 106for 107.Ar newpool 108to 109.Ar root 110and automatically import it. 111.El 112. 113.Sh SEE ALSO 114.Xr zpool-import 8 , 115.Xr zpool-list 8 , 116.Xr zpool-remove 8 117