1.\" Copyright (c) 2008 Yahoo!, Inc. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the author nor the names of any co-contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd June 28, 2008 29.Dt CRASHINFO 8 30.Os 31.Sh NAME 32.Nm crashinfo 33.Nd "analyze a core dump of the operating system" 34.Sh SYNOPSIS 35.Nm 36.Op Fl d Ar crashdir 37.Op Fl n Ar dumpnr 38.Op Fl k Ar kernel 39.Op Ar core 40.Sh DESCRIPTION 41The 42.Nm 43utility analyzes a core dump saved by 44.Xr savecore 8 . 45It generates a text file containing the analysis in the same directory as 46the core dump. 47For a given core dump file named 48.Pa vmcore.XX 49the generated text file will be named 50.Pa core.txt.XX . 51.Pp 52By default, 53.Nm 54analyzes the most recent core dump in the core dump directory. 55A specific core dump may be specified via either the 56.Ar core 57or 58.Ar dumpnr 59arguments. 60Once 61.Nm 62has located a core dump, 63it analyzes the core dump to determine the exact version of the kernel 64that generated the core. 65It then looks for a matching kernel file under each of the subdirectories in 66.Pa /boot . 67The location of the kernel file can also be explicitly provided via the 68.Ar kernel 69argument. 70.Pp 71Once 72.Nm 73has located a core dump and kernel, 74it uses several utilities to analyze the core including 75.Xr dmesg 8 , 76.Xr fstat 1 , 77.Xr iostat 8 , 78.Xr ipcs 1 , 79.Xr kgdb 1 , 80.Xr netstat 1 , 81.Xr nfsstat 1 , 82.Xr ps 1 , 83.Xr pstat 8 , 84and 85.Xr vmstat 8 . 86.Pp 87The options are as follows: 88.Bl -tag -width indent 89.It Fl d Ar crashdir 90Specify an alternate core dump directory. 91The default crash dump directory is 92.Pa /var/crash . 93.It Fl n Ar dumpnr 94Use the core dump saved in 95.Pa vmcore. Ns Ar dumpnr 96instead of the latest core in the core dump directory. 97.It Fl k Ar kernel 98Specify an explicit kernel file. 99.El 100.Sh SEE ALSO 101.Xr savecore 8 102.Sh HISTORY 103The 104.Nm 105utility appeared in 106.Dx 2.7 . 107