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20 lines
924 B
Text
20 lines
924 B
Text
Duperemove is a simple tool for finding duplicated extents and
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submitting them for deduplication. When given a list of files it will
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hash their contents on a block by block basis and compare those hashes
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to each other, finding and categorizing blocks that match each other.
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When given the -d option, duperemove will submit those extents for
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deduplication using the Linux kernel extent-same ioctl.
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Duperemove can store the hashes it computes in a 'hashfile'. If given an
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existing hashfile, duperemove will only compute hashes for those files
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which have changed since the last run. Thus you can run duperemove
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repeatedly on your data as it changes, without having to re-checksum
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unchanged data.
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Duperemove can also take input from the fdupes program.
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Deduplication is currently only supported by the btrfs and xfs
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filesystems.
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fdupes is an optional runtime dependency (allows the use of the --fdupes
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command line option).
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