https://github.com/u2takey/example_reedsolomon

https://github.com/u2takey/example_reedsolomon

Last synced: 15 days ago
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• Host: GitHub
• URL: https://github.com/u2takey/example_reedsolomon
• Owner: u2takey
• Created: 2021-05-30T11:48:41.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2021-05-30T12:01:40.000Z (over 3 years ago)
• Last Synced: 2024-10-10T20:06:27.570Z (28 days ago)
• Language: Go
• Size: 2.93 KB
• Stars: 3
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# example for reedsolomon

```

# 1. 首先我们试试存储的效果

➜ cat ./file//testfile.txt                                                                                                           

this

is

just

a

test

file

content

is

meaningless% 

➜ ./main --file=./file//testfile.txt -encode_path=./encode                 

split data into 5+3=8 shards success.

encode data success.%  

# 这里我们把文件 testfile.txt 分成了 5份，加上3份校验数据进行存储，encode 文件夹为存储的数据内容，我们假设在现实的场景中 7 份数据存储在不同的节点上

➜ ls ./encode           

encode_0  encode_1  encode_2  encode_3  encode_4  encode_5  encode_6  encode_7

# 2. 现在我们(因为节点的磁盘损坏)损失了其中的 任意三份数据

➜ rm ./encode/encode_3 ./encode/encode_5 ./encode/encode_7   

# 3. 尝试恢复数据, 可以看出，数据恢复很成功, encode file 都恢复了，而且 recover 出来的原始数据也没问题

➜ ./main --file=./file//testfile_recover.txt -encode_path=./encode --decode

reconstruct data done

recover file success%    

➜ ls ./encode

encode_0  encode_1  encode_2  encode_3  encode_4  encode_5  encode_6  encode_7

➜ cat ./file/testfile_recover.txt 

this

is

just

a

test

file

content

is

meaningless%

# 4. 删除更多的数据, 再次尝试恢复, 可以发现恢复失败: too few shards given

➜ rm ./encode/encode_1 ./encode/encode_3 ./encode/encode_5 ./encode/encode_7   

➜ ./main --file=./file//testfile_recover.txt -encode_path=./encode --decode    

panic: too few shards given

```