SAVECORE(8) | System Manager's Manual | SAVECORE(8) |
savecore
— save a
core dump of the operating system
savecore |
[-cfvz ] [-N
system] directory |
savecore
copies the currently running
kernel and its associated core dump into directory,
and enters a reboot message and information about the core dump into the
system log.
The options are as follows:
-c
savecore
will ignore it.-f
-N
system-v
-z
savecore
checks the core dump in various
ways to make sure that it is current and that it corresponds to the
currently running system. If it passes these checks, it saves the core image
in directory/bsd.#.core and
the system in directory/bsd.#
(or in directory/bsd.#.core.Z
and directory/bsd.#.Z,
respectively, if the -z
option is used). The
“#” is the number from the first line of the file
directory/bounds, and it is
incremented and stored back into the file each time
savecore
successfully runs.
savecore
also checks the available disk
space before attempting to make the copies. If there is insufficient disk
space in the filesystem containing directory, or if
the file directory/minfree
exists and the number of free kilobytes (for non-superusers) in the
filesystem after the copies were made would be less than the number in the
first line of this file, the copies are not attempted.
If savecore
successfully copies the kernel
and the core dump, the core dump is cleared so that future invocations of
savecore
will ignore it.
savecore
is meant to be called near the
end of the initialization file /etc/rc (see
rc(8)).
The savecore
command appeared in
4.1BSD.
The minfree code does not consider the effect of compression.
August 14, 2013 | OpenBSD-current |