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Diffstat (limited to 'system/duperemove/README')
| -rw-r--r-- | system/duperemove/README | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/system/duperemove/README b/system/duperemove/README index 8cb82b560c..b535b70f0c 100644 --- a/system/duperemove/README +++ b/system/duperemove/README @@ -1,9 +1,11 @@ Duperemove is a simple tool for finding duplicated extents and submitting them for deduplication. When given a list of files it will -hash their contents on a block by block basis and compare those hashes -to each other, finding and categorizing blocks that match each other. -When given the -d option, duperemove will submit those extents for -deduplication using the Linux kernel extent-same ioctl. +hash their contents on an extent by extent basis and compare those +hashes to each other, finding and categorizing extents that match each +other. Optionally, a per-block hash can be applied for further +duplication lookup. When given the -d option, duperemove will submit +those extents for deduplication using the Linux kernel FIDEDUPRANGE +ioctl. Duperemove can store the hashes it computes in a 'hashfile'. If given an existing hashfile, duperemove will only compute hashes for those files |