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mfsmetadirinfo

Uses MooseFS metadata to calculate precise directory information (similar to mfsdirinfo).

This page reproduces the manual page mfsmetadirinfo(8) as the product ships it: the text man mfsmetadirinfo prints on a machine where the packages are installed. It is not edited here, and where it disagrees with the rest of this documentation, the documentation is the side kept against the sources. What the subject is: Command line tools.

Synopsis​

mfsmetadirinfo [-f J|C|C x] [-o outputfile] [-a sum_name] metadata_file PATH [PATH...]

Description​

mfsmetadirinfo is a tool that can be used to calculate precise directory information such as number of inodes, number of chunks, total length of all files, size, real size etc. Output can be generated as plain text, CSV or JSON. Data for calculations is read from indicated metadata.mfs mfs master metadata file and is calculated for directory(ies) specified by PATH parameter(s) - relative in mfs instance. Default output is human-readable plain text, JSON or CSV can be selected using options.

Options:

  • -f
    switch output format to JSON (J) or CSV (C); for CSV, if only C is specified, default separator will be used (comma), if second character is specified, this character will be used as the separator in CSV data

  • -o
    write output to outputfile instead of stdout

  • -a
    optional parameter that indicates the tool should calculate the information for all supplied paths together (a sum), this calculation is indicated by sum_name in output data

  • metadata_file
    path to metadata.mfs file

OUTPUT FIELDS​

For each PATH and, if defined, for sum_name, following information will be indicated:

  • inodes
    number of all unique inodes (file system objects)

  • files
    number of all unique files

  • dirs
    number of all unique directories

  • chunks
    number of all unique chunks

  • kchunks
    number of all unique chunks using KEEP policy

  • achunks
    number of all unique chunks using ARCH policy

  • length
    total length of all unique files

  • size
    total size of all unique chunks

  • rsize
    total real size of all unique chunks (number of copies taken into account)

  • ksize
    hypothetical real size of all unique chunks if all were using KEEP policy

  • asize
    hypothetical real size of all unique chunks if all were using ARCH policy

See also​

mfsmaster(8), mfsmetadump(8), mfsdirinfo(1)