1b057aac2b
Deleting the temp snapshot isn't immediately possible because it's the origin of the newly imported boot environment. However, this is trivially solved by opening the new boot environment and promoting it. The roles are now reversed and the temp snapshot/dataset may be completely destroyed. Remove the BUGS from libbe(3) and bectl(8).
274 lines
5.5 KiB
Groff
274 lines
5.5 KiB
Groff
.\"
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.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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.\"
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.\" Copyright (c) 2017 Kyle J. Kneitinger <kyle@kneit.in>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\"
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.\" @(#)be.1
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 12, 2018
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.Dt BECTL 8
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.Os
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.Sh NAME
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.Nm bectl
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.Nd Utility to manage Boot Environments on ZFS
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.Sh SYNOPSIS
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.Nm
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activate
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.Op Fl t
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.Ao Ar beName Ac
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.Nm
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create
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.Op Fl r
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.Op Fl e Ar nonActiveBe | Fl e Ar beName@snapshot
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.Ao Ar beName Ac
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.Nm
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create
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.Op Fl r
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.Ao Ar beName@snapshot Ac
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.Nm
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destroy
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.Op Fl F
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.Ao Ar beName | beName@snapshot Ac
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.Nm
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export
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.Ao Ar sourceBe Ac
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.Nm
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import
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.Ao Ar targetBe Ac
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.Nm
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jail
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.Oo Fl o Ar key Ns = Ns Ar value | Fl u Ar key Oc Ns ...
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.Ao Ar jailID | jailName Ac
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.Ao Ar bootenv Ac
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.Nm
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list
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.Op Fl a
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.Op Fl D
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.Op Fl H
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.Op Fl s
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.Nm
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mount
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.Ao Ar beName Ac
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.Op mountpoint
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.Nm
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rename
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.Ao Ar origBeName Ac
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.Ao Ar newBeName Ac
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.Nm
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{ ujail | unjail }
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.Ao Ar jailID | jailName Ac
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.Ao Ar bootenv Ac
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.Nm
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{ umount | unmount }
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.Op Fl f
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.Ao Ar beName Ac
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.Sh DESCRIPTION
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The
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.Nm
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command is used to setup and interact with ZFS boot environments, which are bootable clones of datasets.
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.Pp
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.Em Boot Environments
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allows the system to be upgraded, while preserving the old system environment in a separate ZFS dataset.
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.Sh COMMANDS
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The following commands are supported by
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.Nm :
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.Bl -tag -width activate
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.It Ic activate
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.Op Fl t
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.Ar <beName>
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.Pp
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Activate the given
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.Ar beName
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as the default boot filesystem.
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If the
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.Op Fl t
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flag is given, this takes effect only for the next boot.
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.It Ic create
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.Op Fl r
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.Op Fl e Ar nonActiveBe | Fl e Ar beName@snapshot
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.Ao Ar beName Ac
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.Pp
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Creates a new boot environment named
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.Ar beName .
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If the -e param is specified, the new environment will be cloned from the given
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.Ar nonActiveBe | Ar beName@snapshot .
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If the
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.Op Fl r
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flag is given, a recursive boot environment will be made.
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.It Ic create
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.Op Fl r
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.Ao Ar beName@snapshot Ac
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.Pp
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Creates a snapshot of the existing boot environment named
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.Ar beName .
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If the
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.Op Fl r
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flag is given, a recursive boot environment will be made.
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.It Ic destroy
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.Op Fl F
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.Ao Ar beName | beName@snapshot Ac
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.Pp
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Destroys the given
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.Ar beName
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boot environment or
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.Ar beName@snapshot
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snapshot.
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Specifying
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.Fl F
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will automatically unmount without confirmation.
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.It Ic export
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.Ao Ar sourceBe Ac
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.Pp
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Export
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.Ar sourceBe
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to
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.Dv stdout .
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.Dv stdout
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must be piped or redirected to a file.
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.It Ic import
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.Ao Ar targetBe Ac
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.Pp
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Import
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.Ar targetBe
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from
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.Dv stdin .
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.It Ic jail
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.Oo Fl o Ar key Ns = Ns Ar value | Fl u Ar key Oc Ns ...
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.Ao Ar jailID | jailName Ac
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.Ao Ar bootenv Ac
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.Pp
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Creates a jail of the given boot environment.
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Multiple
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.Fl o
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and
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.Fl u
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arguments may be specified.
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.Fl o
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will set a jail parameter, and
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.Fl u
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will unset a jail parameter.
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.Pp
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The
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.Va name ,
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.Va host.hostname ,
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and
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.Va path
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may not actually be unset.
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Attempts to unset any of these will revert them to the default values specified
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below, if they have been overwritten by
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.Fl o .
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.Pp
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All
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.Ar key ,
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.Ar value
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pairs are interpreted as jail parameters as described in
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.Xr jail 8 .
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The following default parameters are provided:
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.Bl -tag -width -indent
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.It Va allow.mount Ns = Ns Ar true
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.It Va allow.mount.devfs Ns = Ns Ar true
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.It Va enforce_statfs Ns = Ns Ar 1
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.It Va name Ns = Ns Ar bootenv
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.It Va host.hostname Ns = Ns Ar bootenv
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.It Va path
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Set to a path in /tmp generated by
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.Xr libbe 3 .
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.El
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.Pp
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All default parameters may be overwritten.
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.It Ic list
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.Op Fl a
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.Op Fl D
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.Op Fl H
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.Op Fl s
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.Pp
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Displays all boot environments.
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The Active field indicates whether the boot environment is active now (N); active on reboot (R); or both (NR).
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.Pp
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If
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.Fl a
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is used, display all datasets.
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If
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.Fl D
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is used, display the full space usage for each boot environment, assuming all other boot environments were destroyed.
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The
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.Fl H
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option is used for scripting.
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It does not print headers and separate fields by a single tab instead of arbitrary white space.
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If
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.Fl s
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is used, display all snapshots as well.
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.It Ic mount
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.Ao Ar beName Ac
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.Op mountpoint
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.Pp
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Temporarily mount the boot environment.
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Mount at the specified
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.Ar mountpoint
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if provided.
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.It Ic rename Ao Ar origBeName Ac Ao Ar newBeName Ac
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.Pp
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Renames the given nonactive
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.Ar origBeName
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to the given
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.Ar newBeName
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.It Ic unjail Ao Ar jailID | jailName | beName Ac
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.Pp
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Destroys the jail created from the given boot environment.
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.It Ic unmount
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.Op Fl f
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.Ao Ar beName Ac
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.Pp
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Unmount the given boot environment, if it is mounted.
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Specifying
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.Fl f
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will force the unmount if busy.
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.El
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.Sh EXAMPLES
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.Bl -bullet
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.It
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To fill in with jail upgrade example when behavior is firm.
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.El
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.Sh SEE ALSO
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.Xr jail 8 ,
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.Xr zfs 8 ,
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.Xr zpool 8
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.Sh HISTORY
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.Nm
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is based on
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.Xr beadm 1
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and was implemented as a project for the 2017 Summer of Code, along with
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.Xr libbe 3 .
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.Sh AUTHORS
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.Bl -bullet
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.It
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.An Kyle Kneitinger (kneitinger) Aq Mt kyle@kneit.in
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.Pp
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Creator of
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.Nm .
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.It
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.An Slawomir Wojciech Wojtczak (vermaden) Aq Mt vermaden@interia.pl
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.Pp
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Creator and maintainer of
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.Xr beadm 1 .
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.It
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.An Bryan Drewery (bdrewery) Aq Mt bryan@shatow.net
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.Pp
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Wrote the original
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.Xr beadm 1
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manual page that this one is derived from.
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.El
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