[counttheforks]

I'd like copy-on-write hardlinks, or deduplicated blocks, that are made automatically on a schedule as to not incur the constant overhead of dedup, but still reap some of the benefits for archival.

[Freaky]

Reflinks are basically CoW hardlinks — supported on Linux by btrfs, XFS, and I've seen some effort to bring it to ZFS.

DragonFlyBSD's HAMMER filesystem supports on-demand/scheduled dedup using the hammer(8) command, with configurable memory and runtime limits.

[the8472]

https://manpages.debian.org/testing/duperemove/duperemove.8....

[counttheforks]

Sweet, thanks.

[tatersolid]

NTFS deduplication works this way on Windows server since 2012, but I don’t think any of the Linux NTFS drivers support NTFS dedupe correctly.