Fraggy

Get fragmentation distribution of a filesystem, which implements FIEMAP as an IO system call.

Requirements

• GCC

• CMake

• R (optional)

  $ R --no-save <<< "install.packages(c('argparser', 'tidyverse', 'svglite'))"
  

Build

$ mkdir build/
$ cd build/
$ cmake build ../
$ make

Usage

The aggregator fraggy.agg only needs a path as a sole parameter. It prints the CSV directly to standard output. Output redirection on the shell is required to write into a file.

$ ./fraggy.agg /mnt/filesystem > frag_distribution.csv

To run the analyzer and visualizer a minimum of one CSV from fraggy.agg is required. The number of distributions to be compared is not limited. To set ordinary labels to each file the optional parameter -l | --label can be used. They must match the number of given input files.

More information can be found on the program's help page -h | --help.

$ ./fraggy.anlz                                                     \
    --prefix "disk1_ext4_"                                          \
    --output "./results"                                            \
    --input  "./frag_distribution1.csv" "./frag_distribution2.csv"  \
    --label  "fragmented" "defragmented"