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Welcome to LeoFS

Overview

LeoFS is the Web shaped object storage system and S3 compatible storage.

Feature

  • One-Huge Storage
    • LeoFS is the Web shaped object storage system.
    • LeoFS is built to operate in highly distributed environments, such as the private cloud.
    • LeoFS has NO SPOF.
    • LeoFS's cluster consists of a set of loosely connected nodes. So, They can be viewed as "ONE-Huge Storage".
    • LeoFS is made by modular-system. So, It realize a lower cost of operations.
  • 3-HIGHs
    • “LeoFS” is highly scalable, fault-tolerant "Distributed File System" for the Web.
    • Different than other DFS — “LeoFS” offers a number of unique benefits to users:
      • HIGH cost performance
      • HIGH Reliability
      • HIGH Scalability
  • S3 Compatible
    • LeoFS is Amazon S3 comapatible storage system.
    • If you think public-cloud's cost is HIGH, You can easily switch to LeoFS.

Where to find more

  • Detail document is here.

Quich Start

  • Prepare
    • "leofs" uses the "rebar" build system. Makefile so that simply running "make" at the top level should work.
    • "leofs" requires Erlang R14B04.
  • Build and Package
$ git clone https://github.com/leo-project/leofs.git
$ cd leofs
$ make prepare
$ make
$ make release
  • Modify Configuration File: detail
  • Operate on "Manager Console": detail
## Need to modify configuration files - 
##     manager_master: leofs/package/leofs/manager_0/etc/app.config
##      manager_slave: leofs/package/leofs/manager_1/etc/app.config
##            storage: leofs/package/leofs/storage/etc/app.config
##            gateway: leofs/package/leofs/storage/etc/app.config

$ cd package/leofs
$ manager_0/bin/leo_manager start
$ manager_1/bin/leo_manager start
$ storage/bin/leo_storage start

## Need to operate on "LeoFS-Manager's Console" - 
##     - Command: [ATTACH, START, STATUS]

$ gateway/bin/leo_gateway start

## Confirm LeoFS's Status on "LeoFS-Manager's Console" - 
##     - Command: [STATUS]
  • Example - PUT an Object into LeoFS
curl -v -X PUT -H "Content-Type: image/jpeg" --data-binary @stockholm-0.jpg http://localhost:8080/swe/stockholm-0.jpg
  • Example - GET an Object from LeoFS
curl -v http://localhost:8080/swe/stockholm-0.jpg > stockholm-0-1.jpg

GOALs

  • LeoFS aims to provide the following advantages:
    • HIGH Cost Performance
      • Fast - Over 200MB/sec into 10GE
      • A lower cost than other storage
      • Provide easy management and easy operation
    • HIGH Reliability
      • Nine nines - Operating ratios is 99.9999999%
    • High Scalability
      • Build Huge-Cluster at low cost

Milestones

  • 0.9.1
    • Large Object Support (over 64MB)
    • Support Cowboy on "leo_gateway"
    • Enhance S3-API (1)
      • Bucket-related
  • 0.9.2
    • Enhance S3-API (2)
      • Authentication
    • Web-Console (Leo Tamer)
      • Log Analysis/Search
      • File Manager

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