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.
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.
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]
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.
38 .Nd manage on-disk version of ZFS filesystems
49 .Fl a Ns | Ns Ar filesystem
57 Displays a list of file systems that are not the most recent version.
63 Displays a list of currently supported file system versions.
69 .Fl a Ns | Ns Ar filesystem
71 Upgrades file systems to a new on-disk version.
72 Once this is done, the file systems will no longer be accessible on systems
73 running older versions of ZFS.
75 streams generated from new snapshots of these file systems cannot be accessed on
76 systems running older versions of ZFS.
78 In general, the file system version is independent of the pool version.
81 for information on features of ZFS storage pools.
83 In some cases, the file system version and the pool version are interrelated and
84 the pool version must be upgraded before the file system version can be
86 .Bl -tag -width "filesystem"
90 If not specified, upgrade to the most recent version.
92 option can only be used to increase the version number, and only up to the most
93 recent version supported by this version of ZFS.
95 Upgrade all file systems on all imported pools.
97 Upgrade the specified file system.
99 Upgrade the specified file system and all descendent file systems.