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What Are Btrfs Subvolumes? And Why They’re Better Than Traditional Linux Partitions (itsfoss.com)

submitted 1 day ago by costalfy@programming.dev to c/linux@programming.dev

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[–] beeng@discuss.tchncs.de 4 points 20 hours ago* (last edited 20 hours ago) (2 children)

I wanted btrfs for ages for snapshots.. Then I moved to nixos with Declarative config... Then I needed to move partitions to extend my drive into old root, decided to move to btrfs from ext4 cos why not at the time... Only afterwards do I realize snapshots aren't that helpful when you're on nixos.. Or am I missing something?

[–] moonpiedumplings@programming.dev 2 points 10 hours ago

Transparent fileystem compression and deduplication (btrfs feature not in ext4) compresses data while still having it be accessible normally. This leads to big space savings.

You can use the tool compsize to check it out.

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