2008-08-05 20:41:46 +00:00
|
|
|
.\" Copyright (c) 2008 Yahoo!, Inc.
|
|
|
|
|
.\" 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.
|
|
|
|
|
.\" 3. Neither the name of the author nor the names of any co-contributors
|
|
|
|
|
.\" may be used to endorse or promote products derived from this software
|
|
|
|
|
.\" without specific prior written permission.
|
|
|
|
|
.\"
|
|
|
|
|
.\" 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.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
2020-12-02 19:58:50 +00:00
|
|
|
.Dd December 2, 2020
|
2008-08-05 20:41:46 +00:00
|
|
|
.Dt CRASHINFO 8
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm crashinfo
|
|
|
|
|
.Nd "analyze a core dump of the operating system"
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm
|
|
|
|
|
.Op Fl d Ar crashdir
|
|
|
|
|
.Op Fl n Ar dumpnr
|
|
|
|
|
.Op Fl k Ar kernel
|
|
|
|
|
.Op Ar core
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility analyzes a core dump saved by
|
|
|
|
|
.Xr savecore 8 .
|
|
|
|
|
It generates a text file containing the analysis in the same directory as
|
|
|
|
|
the core dump.
|
|
|
|
|
For a given core dump file named
|
|
|
|
|
.Pa vmcore.XX
|
|
|
|
|
the generated text file will be named
|
|
|
|
|
.Pa core.txt.XX .
|
|
|
|
|
.Pp
|
|
|
|
|
By default,
|
|
|
|
|
.Nm
|
|
|
|
|
analyzes the most recent core dump in the core dump directory.
|
|
|
|
|
A specific core dump may be specified via either the
|
|
|
|
|
.Ar core
|
|
|
|
|
or
|
|
|
|
|
.Ar dumpnr
|
|
|
|
|
arguments.
|
|
|
|
|
Once
|
|
|
|
|
.Nm
|
|
|
|
|
has located a core dump,
|
|
|
|
|
it analyzes the core dump to determine the exact version of the kernel
|
|
|
|
|
that generated the core.
|
|
|
|
|
It then looks for a matching kernel file under each of the subdirectories in
|
|
|
|
|
.Pa /boot .
|
|
|
|
|
The location of the kernel file can also be explicitly provided via the
|
|
|
|
|
.Ar kernel
|
|
|
|
|
argument.
|
|
|
|
|
.Pp
|
|
|
|
|
Once
|
|
|
|
|
.Nm
|
|
|
|
|
has located a core dump and kernel,
|
|
|
|
|
it uses several utilities to analyze the core including
|
|
|
|
|
.Xr dmesg 8 ,
|
|
|
|
|
.Xr fstat 1 ,
|
|
|
|
|
.Xr iostat 8 ,
|
|
|
|
|
.Xr ipcs 1 ,
|
2022-08-14 13:17:29 +00:00
|
|
|
.Xr kgdb 1 Pq Pa ports/devel/gdb ,
|
2008-08-05 20:41:46 +00:00
|
|
|
.Xr netstat 1 ,
|
|
|
|
|
.Xr nfsstat 1 ,
|
|
|
|
|
.Xr ps 1 ,
|
|
|
|
|
.Xr pstat 8 ,
|
|
|
|
|
and
|
|
|
|
|
.Xr vmstat 8 .
|
2020-12-02 19:58:50 +00:00
|
|
|
Note that kgdb must be installed from the devel/gdb port or gdb package.
|
2008-08-05 20:41:46 +00:00
|
|
|
.Pp
|
|
|
|
|
The options are as follows:
|
|
|
|
|
.Bl -tag -width indent
|
2017-06-01 21:23:04 +00:00
|
|
|
.It Fl b
|
2020-11-20 16:59:51 +00:00
|
|
|
Run in batch mode.
|
|
|
|
|
Write most messages to the
|
2017-06-01 21:23:04 +00:00
|
|
|
.Pa core.txt.XX
|
2020-11-20 16:59:51 +00:00
|
|
|
file instead of the terminal.
|
|
|
|
|
This flag is used when
|
2017-06-01 21:23:04 +00:00
|
|
|
.Nm
|
|
|
|
|
is run during boot.
|
2008-08-05 20:41:46 +00:00
|
|
|
.It Fl d Ar crashdir
|
|
|
|
|
Specify an alternate core dump directory.
|
2009-09-17 19:15:49 +00:00
|
|
|
The default crash dump directory is
|
2008-08-05 20:41:46 +00:00
|
|
|
.Pa /var/crash .
|
|
|
|
|
.It Fl n Ar dumpnr
|
|
|
|
|
Use the core dump saved in
|
|
|
|
|
.Pa vmcore. Ns Ar dumpnr
|
2009-09-17 19:15:49 +00:00
|
|
|
instead of the latest core in the core dump directory.
|
2008-08-05 20:41:46 +00:00
|
|
|
.It Fl k Ar kernel
|
|
|
|
|
Specify an explicit kernel file.
|
|
|
|
|
.El
|
|
|
|
|
.Sh SEE ALSO
|
2009-09-17 19:15:49 +00:00
|
|
|
.Xr textdump 4 ,
|
|
|
|
|
.Xr savecore 8
|
2008-08-05 20:41:46 +00:00
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility appeared in
|
2009-04-23 08:37:56 +00:00
|
|
|
.Fx 6.4 .
|
