https://distrowatch.com/weekly.php?issue=20170508#qa
Apparently my file system is ok

Code: Select all
~ $ sudo e4defrag -c /
[sudo]
<Fragmented files> now/best size/ext
1. /var/log/samba/log.wb-ALESSIO-LAPTOP 66/1 4 KB
2. /var/log/wtmp.1 60/1 4 KB
3. /home/alessio/.local/share/akonadi/db_data/mysql.err.old
768/1 4 KB
4. /var/log/pm-powersave.log.1 20/1 4 KB
5. /var/log/wtmp 12/1 4 KB
Total/best extents 170005/162702
Average size per extent 47 KB
Fragmentation score 3
[0-30 no problem: 31-55 a little bit fragmented: 56- needs defrag]
This directory (/) does not need defragmentation.
Done.