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ffsinfo (8)
  • >> ffsinfo (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    ffsinfo
    
     - dump all meta information of an existing ufs file system
    
     
    

    SYNOPSIS

    [-g cylinder_group ] [-i inode ] [-l level ] [-o outfile ] special | file  

    DESCRIPTION

    The utility extends the dumpfs(8) utility.

    The output is appended to the file outfile Also expect the output file to be rather large. Up to 2 percent of the size of the specified file system is not uncommon.

    The following options are available:

    -g cylinder_group
    This restricts the dump to information about this cylinder group only. Here 0 means the first cylinder group and -1 the last one.
    -i inode
    This restricts the dump to information about this particular inode only. Here the minimum acceptable inode is 2 If this option is omitted but a cylinder group is defined then only inodes within that cylinder group are dumped.
    -l level
    The level of detail which will be dumped. This value defaults to 255 and is the ``bitwise or'' of the following table:

    0x001
    initial superblock
    0x002
    superblock copies in each cylinder group
    0x004
    cylinder group summary in initial cylinder group
    0x008
    cylinder group information
    0x010
    inode allocation bitmap
    0x020
    fragment allocation bitmap
    0x040
    cluster maps and summary
    0x100
    inode information
    0x200
    indirect block dump

    -o outfile
    This sets the output filename where the dump is written to, and must be specified. If - is provided, output will be sent to stdout.

     

    EXAMPLES

    ffsinfo -o /var/tmp/ffsinfo -l 1023 /dev/vinum/testvol

    will dump /dev/vinum/testvol to /var/tmp/ffsinfo with all available information.  

    SEE ALSO

    disklabel(8), dumpfs(8), fsck(8), growfs(8), newfs(8), tunefs(8), vinum(8)  

    HISTORY

    The utility first appeared in Fx 4.4 .  

    AUTHORS

    An Christoph Herrmann Aq [email protected] An Thomas-Henning von Kamptz Aq [email protected] An The GROWFS team Aq [email protected]  

    BUGS

    Snapshots are handled like plain files. They should get their own level to provide for independent control of the amount of what gets dumped. It probably also makes sense to some extend to dump the snapshot as a file system.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXAMPLES
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


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