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-rollback.8
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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-ROLLBACK 8 34 .Os 35 . 36 .Sh NAME 37 .Nm zfs-rollback 38 .Nd roll ZFS dataset back to snapshot 39 .Sh SYNOPSIS 40 .Nm zfs 41 .Cm rollback 42 .Op Fl Rfr 43 .Ar snapshot 44 . 45 .Sh DESCRIPTION 46 When a dataset is rolled back, all data that has changed since the snapshot is 47 discarded, and the dataset reverts to the state at the time of the snapshot. 48 By default, the command refuses to roll back to a snapshot other than the most 49 recent one. 50 In order to do so, all intermediate snapshots and bookmarks must be destroyed by 51 specifying the 52 .Fl r 53 option. 54 .Pp 55 The 56 .Fl rR 57 options do not recursively destroy the child snapshots of a recursive snapshot. 58 Only direct snapshots of the specified filesystem are destroyed by either of 59 these options. 60 To completely roll back a recursive snapshot, you must roll back the individual 61 child snapshots. 62 .Bl -tag -width "-R" 63 .It Fl R 64 Destroy any more recent snapshots and bookmarks, as well as any clones of those 65 snapshots. 66 .It Fl f 67 Used with the 68 .Fl R 69 option to force an unmount of any clone file systems that are to be destroyed. 70 .It Fl r 71 Destroy any snapshots and bookmarks more recent than the one specified. 72 .El 73 . 74 .Sh EXAMPLES 75 .\" These are, respectively, examples 8 from zfs.8 76 .\" Make sure to update them bidirectionally 77 .Ss Example 8 : No Rolling Back a ZFS File System 78 The following command reverts the contents of 79 .Ar pool/home/anne 80 to the snapshot named 81 .Ar yesterday , 82 deleting all intermediate snapshots: 83 .Dl # Nm zfs Cm rollback Fl r Ar pool/home/anne Ns @ Ns Ar yesterday 84 . 85 .Sh SEE ALSO 86 .Xr zfs-snapshot 8
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