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this post was submitted on 14 Jul 2025
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Defragmenting...
I've never had to defragment the ext4 drives in my server. Ext4 is fairly resistant to fragmentation.
It's not really Ext4 doing that, it's a bunch of tricks in the OS layer and the way apps write files to storage that limits it.
You'll see it if you use something like a BT client without pre-allocation, those files can get heavily fragmented depending on the download speed.