2016-10-29 14:09:32 +00:00
|
|
|
.\" Copyright (c) 2016 Andriy Gapon
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
2017-05-24 17:47:49 +00:00
|
|
|
.Dd May 24, 2017
|
2016-10-29 14:09:32 +00:00
|
|
|
.Dt ZFSBOOTCFG 8
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm zfsbootcfg
|
|
|
|
|
.Nd "specify zfsboot options for the next boot"
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm
|
|
|
|
|
.Ao Ar options Ac
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
.Nm
|
|
|
|
|
is used to set
|
|
|
|
|
.Xr boot.config 5 Ns -style
|
|
|
|
|
options to be used by
|
|
|
|
|
.Xr zfsboot 8
|
|
|
|
|
or
|
|
|
|
|
.Xr gptzfsboot 8
|
|
|
|
|
the next time the machine is booted.
|
|
|
|
|
Once
|
|
|
|
|
.Xr zfsboot 8
|
|
|
|
|
or
|
|
|
|
|
.Xr gptzfsboot 8
|
|
|
|
|
reads the information, it is deleted.
|
|
|
|
|
If booting fails, the machine automatically reverts to the previous
|
|
|
|
|
boot configuration.
|
|
|
|
|
The information is stored in a special reserved area of a ZFS pool.
|
|
|
|
|
.Xr zfsboot 8
|
|
|
|
|
or
|
|
|
|
|
.Xr gptzfsboot 8
|
|
|
|
|
read the boot option information from the first disk found in the first
|
|
|
|
|
ZFS pool found.
|
|
|
|
|
.Sh ENVIRONMENT
|
|
|
|
|
.Bl -tag -width vfs.zfs.boot.primary_pool -compact
|
|
|
|
|
.It Ev vfs.zfs.boot.primary_pool
|
|
|
|
|
The
|
|
|
|
|
.Xr kenv 1
|
|
|
|
|
variable that identifies a pool for which the options are written.
|
|
|
|
|
.It Ev vfs.zfs.boot.primary_vdev
|
|
|
|
|
The
|
|
|
|
|
.Xr kenv 1
|
|
|
|
|
variable that identifies a disk within the pool where the options
|
|
|
|
|
are written.
|
|
|
|
|
.El
|
|
|
|
|
.Sh EXAMPLES
|
|
|
|
|
Try to boot to a new
|
|
|
|
|
.Em boot environment
|
|
|
|
|
without changing the
|
|
|
|
|
.Cm bootfs
|
|
|
|
|
property of a pool:
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "zfsbootcfg ""zfs:tank/ROOT/newbe:""
|
|
|
|
|
.Pp
|
|
|
|
|
To clear the boot options:
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl "zfsbootcfg """"
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr boot.config 5 ,
|
|
|
|
|
.Xr gptzfsboot 8 ,
|
|
|
|
|
.Xr zfsboot 8
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
.Nm
|
|
|
|
|
appeared in
|
2017-05-24 17:47:49 +00:00
|
|
|
.Fx 11.1 .
|
2016-10-29 14:09:32 +00:00
|
|
|
.Sh AUTHORS
|
|
|
|
|
This manual page was written by
|
|
|
|
|
.An Andriy Gapon Aq Mt avg@FreeBSD.org .
|
|
|
|
|
.Sh CAVEATS
|
|
|
|
|
At the moment,
|
|
|
|
|
.Nm
|
|
|
|
|
uses the
|
|
|
|
|
.Ev vfs.zfs.boot.primary_pool
|
|
|
|
|
and
|
|
|
|
|
.Ev vfs.zfs.boot.primary_vdev
|
|
|
|
|
.Xr kenv 1
|
|
|
|
|
variables to determine a ZFS pool and a disk in it where the options
|
|
|
|
|
are to be stored.
|
|
|
|
|
The variables are set by the ZFS boot chain, so there is an assumption
|
|
|
|
|
that the same boot disk is going to be used for the next reboot.
|
|
|
|
|
There is no
|
|
|
|
|
.Nm
|
|
|
|
|
option to specify a different pool or a different disk.
|
|
|
|
|
.Pp
|
|
|
|
|
.Nm
|
|
|
|
|
should be extended to install new
|
|
|
|
|
.Xr zfsboot 8
|
|
|
|
|
blocks in a ZFS pool.
|
