e2freefrag is used to report free space fragmentation on ext2/3/4
file systems. filesys is the file system device name (e.g.
/dev/hdc1, /dev/md0). The e2freefrag program will scan the block
bitmap information to check how many free blocks are present as
contiguous and aligned free space. The percentage of contiguous
free blocks of size and of alignment chunk_kb is reported. It
also displays the minimum/maximum/average free chunk size in the
file system, along with a histogram of all free chunks. This
information can be used to gauge the level of free space
fragmentation in the file system.
If a chunk size is specified, then e2freefrag will print
how many free chunks of size chunk_kb are available in
units of kilobytes (Kb). The chunk size must be a power
of two and be larger than file system block size.
-h Print the usage of the program.
This page is part of the e2fsprogs (utilities for ext2/3/4
filesystems) project. Information about the project can be found
at ⟨http://e2fsprogs.sourceforge.net/⟩. It is not known how to
report bugs for this man page; if you know, please send a mail to
firstname.lastname@example.org. This page was obtained from the project's
upstream Git repository
2021-08-27. (At that time, the date of the most recent commit
that was found in the repository was 2021-08-22.) If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to email@example.com
E2fsprogs version 1.46.4 August 2021 E2FREEFRAG(8)