9fa168b01a
Rather then combining hardlink creation for the geom(8) binary with shared library build, move libraries to src/lib/geom so they are built and installed normally. Create a common Makefile.classes which is included by both lib/geom/Makefile and sbin/geom/Makefile so the symlink and libraries stay in sync. The relocation of libraries allows libraries to be build for 32-bit compat. This also reduces the number of non-standard builds in the system. This commit is not sufficent to run a 32-bit /sbin/geom on a 64-bit system out of the box as it will look in the wrong place for libraries unless GEOM_LIBRARY_PATH is set appropriatly in the environment. Reviewed by: bdrewery Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D15360
190 lines
5.1 KiB
Groff
190 lines
5.1 KiB
Groff
.\" Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
|
|
.\" 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 AUTHORS 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 AUTHORS 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 17, 2018
|
|
.Dt GNOP 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm gnop
|
|
.Nd "control utility for NOP GEOM class"
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Cm create
|
|
.Op Fl v
|
|
.Op Fl e Ar error
|
|
.Op Fl o Ar offset
|
|
.Op Fl p Ar stripesize
|
|
.Op Fl P Ar stripeoffset
|
|
.Op Fl r Ar rfailprob
|
|
.Op Fl s Ar size
|
|
.Op Fl S Ar secsize
|
|
.Op Fl w Ar wfailprob
|
|
.Op Fl z Ar physpath
|
|
.Ar dev ...
|
|
.Nm
|
|
.Cm configure
|
|
.Op Fl v
|
|
.Op Fl e Ar error
|
|
.Op Fl r Ar rfailprob
|
|
.Op Fl w Ar wfailprob
|
|
.Ar prov ...
|
|
.Nm
|
|
.Cm destroy
|
|
.Op Fl fv
|
|
.Ar prov ...
|
|
.Nm
|
|
.Cm reset
|
|
.Op Fl v
|
|
.Ar prov ...
|
|
.Nm
|
|
.Cm list
|
|
.Nm
|
|
.Cm status
|
|
.Nm
|
|
.Cm load
|
|
.Nm
|
|
.Cm unload
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility is used for setting up transparent providers on existing ones.
|
|
Its main purpose is testing other GEOM classes, as it allows forced provider
|
|
removal and I/O error simulation with a given probability.
|
|
It also gathers statistics on the number of read, write, delete,
|
|
getattr, flush, and other requests, and the number of bytes read and written.
|
|
.Nm
|
|
can also be used as a good starting point for implementing new GEOM
|
|
classes.
|
|
.Pp
|
|
The first argument to
|
|
.Nm
|
|
indicates an action to be performed:
|
|
.Bl -tag -width ".Cm configure"
|
|
.It Cm create
|
|
Set up a transparent provider on the given devices.
|
|
If the operation succeeds, the new provider should appear with name
|
|
.Pa /dev/ Ns Ao Ar dev Ac Ns Pa .nop .
|
|
The kernel module
|
|
.Pa geom_nop.ko
|
|
will be loaded if it is not loaded already.
|
|
.It Cm configure
|
|
Configure existing transparent provider.
|
|
At the moment it is only used for changing failure probability.
|
|
.It Cm destroy
|
|
Turn off the given transparent providers.
|
|
.It Cm reset
|
|
Reset statistics for the given transparent providers.
|
|
.It Cm list
|
|
See
|
|
.Xr geom 8 .
|
|
.It Cm status
|
|
See
|
|
.Xr geom 8 .
|
|
.It Cm load
|
|
See
|
|
.Xr geom 8 .
|
|
.It Cm unload
|
|
See
|
|
.Xr geom 8 .
|
|
.El
|
|
.Pp
|
|
Additional options:
|
|
.Bl -tag -width ".Fl r Ar rfailprob"
|
|
.It Fl e Ar error
|
|
Specifies the error number to return on failure.
|
|
.It Fl f
|
|
Force the removal of the specified provider.
|
|
.It Fl o Ar offset
|
|
Where to begin on the original provider.
|
|
.It Fl p Ar stripesize
|
|
Value of the stripesize property of the transparent provider.
|
|
.It Fl P Ar stripeoffset
|
|
Value of the stripeoffset property of the transparent provider.
|
|
.It Fl r Ar rfailprob
|
|
Specifies read failure probability in percent.
|
|
.It Fl s Ar size
|
|
Size of the transparent provider.
|
|
.It Fl S Ar secsize
|
|
Sector size of the transparent provider.
|
|
.It Fl w Ar wfailprob
|
|
Specifies write failure probability in percent.
|
|
.It Fl v
|
|
Be more verbose.
|
|
.It Fl z Ar physpath
|
|
Physical path of the transparent provider.
|
|
.El
|
|
.Sh SYSCTL VARIABLES
|
|
The following
|
|
.Xr sysctl 8
|
|
variables can be used to control the behavior of the
|
|
.Nm NOP
|
|
GEOM class.
|
|
The default value is shown next to each variable.
|
|
.Bl -tag -width indent
|
|
.It Va kern.geom.nop.debug : No 0
|
|
Debug level of the
|
|
.Nm NOP
|
|
GEOM class.
|
|
This can be set to a number between 0 and 2 inclusive.
|
|
If set to 0, minimal debug information is printed.
|
|
If set to 1, basic debug information is logged along with the I/O requests
|
|
that were returned as errors.
|
|
If set to 2, the maximum amount of debug information is printed including
|
|
all I/O requests.
|
|
.El
|
|
.Sh EXIT STATUS
|
|
Exit status is 0 on success, and 1 if the command fails.
|
|
.Sh EXAMPLES
|
|
The following example shows how to create a transparent provider for disk
|
|
.Pa /dev/da0
|
|
with 50% write failure probability, and how to destroy it.
|
|
.Bd -literal -offset indent
|
|
gnop create -v -w 50 da0
|
|
gnop destroy -v da0.nop
|
|
.Ed
|
|
.Pp
|
|
The traffic statistics for the given transparent providers can be obtained
|
|
with the
|
|
.Cm list
|
|
command.
|
|
The example below shows the number of bytes written with
|
|
.Xr newfs 8 :
|
|
.Bd -literal -offset indent
|
|
gnop create da0
|
|
newfs /dev/da0.nop
|
|
gnop list
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr geom 4 ,
|
|
.Xr geom 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility appeared in
|
|
.Fx 5.3 .
|
|
.Sh AUTHORS
|
|
.An Pawel Jakub Dawidek Aq Mt pjd@FreeBSD.org
|