first version of chunker long description
License: MIT Signed-off-by: Enrique Erne <enrique.erne@gmail.com>
tcme committed
Oct 27, 2017 at 12:21 UTC
5e49a1d47da19ff3897ff8ee393dd2d9cb55be16
1 file changed
+24
core/commands/add.go
+24
@@ -71,6 +71,30 @@ its filename. For example:
71
You can now refer to the added file in a gateway, like so:
72
73
/ipfs/QmaG4FuMqEBnQNn3C8XJ5bpW8kLs7zq2ZXgHptJHbKDDVx/example.jpg
74
+
75
+The chunker option, '-s', defines the chunking strategy for how
76
+ipfs puts larger files into blocks. Blocks with same content can
77
+be deduplicated. The default is a fixed block size of
78
+256 * 1024 bytes, 'size-262144'. A variable block size can be
79
+specified by using the rabin chunker, rabin-[min]-[avg]-[max].
80
+Using different chunking strategies will produce different hashes
81
+for the same file.
82
+
83
+ > ipfs add --chunker=size-1024 ipfs-logo.svg
84
+ added QmZ9KNxxeeLCPrdceBjvVcmSyLbUWMF4ceKDP8yboLNoHT ipfs-logo.svg
85
+ > ipfs add --chunker=rabin-128-256-2048 ipfs-logo.svg
86
+ added QmQN64Mbj1WK8wAej5MoFkHkD3aTtSGzGnAFXomdVHNNhs ipfs-logo.svg
87
+
88
+You can now check what blocks have been created by:
89
+
90
+ > ipfs object links QmQN64Mbj1WK8wAej5MoFkHkD3aTtSGzGnAFXomdVHNNhs
91
+ Qmb3Wzsmy9RXkyQhERdPd93mBP2jTRUjgVBwx5yWJR5b6k 223
92
+ Qmc7ikMLM1SS88YxxogRtjAyuLLfR85ZDKjfy7ahZYD38h 141
93
+ QmeUiJHEXZnEwjpCfUUSkDuXFk2nuT6gALCeUXtZkRvcbj 858
94
+ QmWwiQMNhpjq9kFUiuFbSQoqrQNTVjwo1wgbbx8wPr9PjB 1040
95
+ QmNPg3SUphwfoJwveDyMRjDDaoitTCE7g9UUqYod8gPwz5 431
96
+ QmPzBVWJtMPdeaoJK55rua7LgbEsjHseMHsUSUrPJ3AncS 278
97
+ QmQB28iwSriSUSMqG2nXDTLtdPHgWb4rebBrU7Q1j4vxPv 338
98
`,
99
},
100