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

• 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 realizes 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 compatible storage system.
  • Switch to LeoFS to decrease your cost from more expensive public-cloud solution.

• Detail document is here.

• Prepare
  • "leofs" uses the "rebar" build system. Makefile so that simply running "make" at the top level should work.
    • rebar
  • "leofs" requires Erlang R14B04.
• Build and Package

$ git clone https://github.com/leo-project/leofs.git
$ cd leofs
$ 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: [START, STATUS]

$ gateway/bin/leo_gateway start

## Confirm LeoFS's Status on "LeoFS-Manager's Console" - 
##     - Command: [STATUS]

• Clients
  • Connect LeoFS from DragonDisk
  • Connect LeoFS from Client of Program Language
  • Connect LeoFS from S3FS-C

• LeoFS aims to provide the following advantages:
  • HIGH Cost Performance
    • Fast - Over 200MB/sec into 10GE (READ)
    • 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

• 0.10 (Aug 2012)
  • Enhance S3-API
    • Authentication
    • Bucket-related
• 0.12 (Oct 2012)
  • Large Object Support
  • Support Cowboy on "leo_gateway"
  • Web-Console (Leo Tamer)
    • Log Analysis/Search
• 0.14 (Dec 2012)
  • Multi-layer Cache (Using SSD)
  • Multi-tenant
  • Streaming
  • Web-Console (Leo Tamer)
    • Cluster manager/monitor
• 0.16 (2013)
  • HBase integration
    • Distributed Lock Mechanism