Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help
CRASHINFO(8)		FreeBSD	System Manager's Manual		  CRASHINFO(8)

     crashinfo -- analyze a core dump of the operating system

     crashinfo [-d crashdir] [-n dumpnr] [-k kernel] [core]

     The crashinfo utility analyzes a core dump	saved by savecore(8).  It gen-
     erates a text file	containing the analysis	in the same directory as the
     core dump.	 For a given core dump file named vmcore.XX the	generated text
     file will be named	core.txt.XX.

     By	default, crashinfo analyzes the	most recent core dump in the core dump
     directory.	 A specific core dump may be specified via either the core or
     dumpnr arguments.	Once crashinfo 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 /boot.  The location of the kernel file can also	be ex-
     plicitly provided via the kernel argument.

     Once crashinfo has	located	a core dump and	kernel,	it uses	several	utili-
     ties to analyze the core including	dmesg(8), fstat(1), iostat(8),
     ipcs(1), kgdb(1), netstat(1), nfsstat(1), ps(1), pstat(8),	and vmstat(8).
     Note that kgdb must be installed from the devel/gdb port or gdb package.

     The options are as	follows:

     -b	     Run in batch mode.	 Write most messages to	the core.txt.XX	file
	     instead of	the terminal.  This flag is used when crashinfo	is run
	     during boot.

     -d	crashdir
	     Specify an	alternate core dump directory.	The default crash dump
	     directory is /var/crash.

     -n	dumpnr
	     Use the core dump saved in	vmcore.dumpnr instead of the latest
	     core in the core dump directory.

     -k	kernel
	     Specify an	explicit kernel	file.

     textdump(4), savecore(8)

     The crashinfo utility appeared in FreeBSD 6.4.

FreeBSD	13.0		       December	2, 2020			  FreeBSD 13.0


Want to link to this manual page? Use this URL:

home | help