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savecore (8)
  • savecore (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • >> savecore (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    savecore
    
     - save a core dump of the operating system
    
     
    

    SYNOPSIS

    -c
    -C [-v ] [directory device ]
    [-fkvz ] [directory [device ... ] ]  

    DESCRIPTION

    The utility copies a core dump into directory or the current working directory if no directory argument is given, and enters a reboot message and information about the core dump into the system log.

    The options are as follows:

    -C
    Check to see if a dump exists, and display a brief message to indicate the status. An exit status of 0 indicates that a dump is there, 1 indicates that none exists. This option is compatible only with the [-v ] option.
    -c
    Clear the dump, so that future invocations of will ignore it.
    -f
    Force a dump to be taken even if either the dump was cleared or if the dump header information is inconsistent.
    -k
    Do not clear the dump after saving it.
    -v
    Print out some additional debugging information. Specify twice for more information.
    -z
    Compress the core dump and kernel (see gzip(1)).

    The utility looks for dumps on each device specified by the device argument(s), or on each device in /etc/fstab marked as ``dump'' or ``swap'' The utility checks the core dump in various ways to make sure that it is complete. If it passes these checks, it saves the core image in directory /vmcore.# and information about the core in directory /info.# For kernel textdumps generated with the textdump(4) facility, output will be stored in the tar(5) format and named director /textdump.tar.# 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 successfully runs.

    The utility also checks the available disk space before attempting to make the copies. If there is insufficient disk space in the file system containing directory or if the file directory /minfree exists and the number of free kilobytes (for non-superusers) in the file system after the copies were made would be less than the number in the first line of this file, the copies are not attempted.

    If successfully copies the kernel and the core dump, the core dump is cleared so that future invocations of will ignore it.

    The utility is meant to be called near the end of the initialization file /etc/rc (see rc(8)).  

    SEE ALSO

    gzip(1), getbootfile(3), textdump(4), tar(4), dumpon(8), syslogd(8)  

    HISTORY

    The utility appeared in BSD 4.1

    Support for kernel textdumps appeared in Fx 8.0 .  

    BUGS

    The minfree code does not consider the effect of compression or sparse files.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    SEE ALSO
    HISTORY
    BUGS


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