Command rmlintusage

The command rmlint can be used to dedup the files, which can support reflink.

I was using reflink dedup for BTRFS, but end up, I changed to hardlink. I think hardlink is more commonly used in Unix environment

Command

rmlint -T df --config=sh:handler=hardlink /dedup

This will dedup the files in /dedup directory, and will generate a file called rmlint.sh in current directory. Run that shell script, will change duplicated files to hard link.

The -T df means dedup files.
The config=sh means generate shell script
The handler=hardlink means generate script using hardlink dedup

Other options

There are many options, but I don't use them.

References

Gentle Guide to rmlint
2 examples for rmlint