I&#x27;ve usually done intentional fragmentation by filling disk with small files and deleting those while growing a new file to claim those blocks. Works basically with every file system.
Some examples where I&#x27;ve used such method.<p>People often claim that fragmentation doesn&#x27;t affect SSD drives, but that&#x27;s not true:
<a href="http:&#x2F;&#x2F;www.sami-lehtinen.net&#x2F;blog&#x2F;ssd-file-fragmentation-myth-debunked" rel="nofollow">http:&#x2F;&#x2F;www.sami-lehtinen.net&#x2F;blog&#x2F;ssd-file-fragmentation-myt...</a><p>This is slightly related. How contiguously growing files are allocated on different file systems:
<a href="http:&#x2F;&#x2F;www.sami-lehtinen.net&#x2F;blog&#x2F;test-btrfs-ext4-ntfs-simple-file-allocation-tests" rel="nofollow">http:&#x2F;&#x2F;www.sami-lehtinen.net&#x2F;blog&#x2F;test-btrfs-ext4-ntfs-simpl...</a>