(Joe wrote)
> You don't. The ext2/3/4 file systems are designed to minimize
> fragmentation, ...

Not what I expected.  But I like it!

Recently, I've been moving a lot of files and sub-directories around. And I'm preparing for a semi-annual big back-up and system upgrade (to F-29). Because it has been a few years since I last checked for fragmentation, I thought it would be good to at least check.

A few minutes ago, based on Ed's reply, I tried "e4defrag -c" on "/home":
-----
e4defrag 1.44.2 (14-May-2018)
<Fragmented files>                             now/best       size/ext
1. [user1's home]/.ICEauthority              30/1              4 KB
2. [user1's home]/.local/share/tracker/tracker-miner-fs.log
                                                12/1              4 KB
3. [user2's home]/.nv/GLCache/e0ac323390458da3db161114e73bf39c/89ca161336d63803/c6eb5423ccd49d57.toc
                                                11/1              4 KB
4. [user2's home]/.local/share/tracker/tracker-miner-fs.log
                                                29/1              4 KB
5. [user2's home]/.nv/GLCache/1518083e014283666145392811bca1e8/4c4d90067ea0e5dc/c6eb5423ccd49d57.toc
                                                 9/1              4 KB

 Total/best extents                             55461/52910
 Average size per extent                        131 KB
 Fragmentation score                            1
 [0-30 no problem: 31-55 a little bit fragmented: 56- needs defrag]
 This directory (/home) does not need defragmentation.
 Done.
-bash.2[~]:
-----
So it looks great.

The results above do raise a question in my mind: What are those "[user's home]/.local/share/tracker/tracker-miner-fs.log" files? Anything to do with coin or data mining, or something else malicious?

Thank-you, Joe and Ed.
Bill.
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