Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/man/man8/zfs-promote.8
Version:
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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) 2009 Sun Microsystems, Inc. All Rights Reserved. 22 .\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org> 23 .\" Copyright (c) 2011, 2019 by Delphix. All rights reserved. 24 .\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25 .\" Copyright (c) 2014, Joyent, Inc. All rights reserved. 26 .\" Copyright (c) 2014 by Adam Stevko. All rights reserved. 27 .\" Copyright (c) 2014 Integros [integros.com] 28 .\" Copyright 2019 Richard Laager. All rights reserved. 29 .\" Copyright 2018 Nexenta Systems, Inc. 30 .\" Copyright 2019 Joyent, Inc. 31 .\" 32 .Dd March 16, 2022 33 .Dt ZFS-PROMOTE 8 34 .Os 35 . 36 .Sh NAME 37 .Nm zfs-promote 38 .Nd promote clone dataset to no longer depend on origin snapshot 39 .Sh SYNOPSIS 40 .Nm zfs 41 .Cm promote 42 .Ar clone 43 . 44 .Sh DESCRIPTION 45 The 46 .Nm zfs Cm promote 47 command makes it possible to destroy the dataset that the clone was created 48 from. 49 The clone parent-child dependency relationship is reversed, so that the origin 50 dataset becomes a clone of the specified dataset. 51 .Pp 52 The snapshot that was cloned, and any snapshots previous to this snapshot, are 53 now owned by the promoted clone. 54 The space they use moves from the origin dataset to the promoted clone, so 55 enough space must be available to accommodate these snapshots. 56 No new space is consumed by this operation, but the space accounting is 57 adjusted. 58 The promoted clone must not have any conflicting snapshot names of its own. 59 The 60 .Nm zfs Cm rename 61 subcommand can be used to rename any conflicting snapshots. 62 . 63 .Sh EXAMPLES 64 .\" These are, respectively, examples 10 from zfs.8 65 .\" Make sure to update them bidirectionally 66 .Ss Example 1 : No Promoting a ZFS Clone 67 The following commands illustrate how to test out changes to a file system, and 68 then replace the original file system with the changed one, using clones, clone 69 promotion, and renaming: 70 .Bd -literal -compact -offset Ds 71 .No # Nm zfs Cm create Ar pool/project/production 72 populate /pool/project/production with data 73 .No # Nm zfs Cm snapshot Ar pool/project/production Ns @ Ns Ar today 74 .No # Nm zfs Cm clone Ar pool/project/production@today pool/project/beta 75 make changes to /pool/project/beta and test them 76 .No # Nm zfs Cm promote Ar pool/project/beta 77 .No # Nm zfs Cm rename Ar pool/project/production pool/project/legacy 78 .No # Nm zfs Cm rename Ar pool/project/beta pool/project/production 79 once the legacy version is no longer needed, it can be destroyed 80 .No # Nm zfs Cm destroy Ar pool/project/legacy 81 .Ed 82 . 83 .Sh SEE ALSO 84 .Xr zfs-clone 8 , 85 .Xr zfs-rename 8
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