duperemove

linux

Finds duplicate filesystem extents and optionally schedule them for deduplication. An extent is small part of a file inside the filesystem. On some filesystems one extent can be referenced multiple times, when parts of the content of the files are identical.

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Examples (4)

Search for duplicate extents in a directory and show them

duperemove -r path/to/directory

Deduplicate duplicate extents on a Btrfs or XFS (experimental) filesystem

duperemove -r -d path/to/directory

Use a hash file to store extent hashes (less memory usage and can be reused on subsequent runs)

duperemove -r -d --hashfile=path/to/hashfile path/to/directory

Limit I/O threads (for hashing and dedupe stage) and CPU threads (for duplicate extent finding stage)

duperemove -r -d --hashfile=path/to/hashfile --io-threads=n --cpu-threads=n path/to/directory

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