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What is Qtas

Qtas（Quite a Storage）is a experimental distributed storage system developed by Q-team in BJFU Advanced Computer Network sources.

Why names Qtas?

• Q means ours team's name;
• s means this project is focusing on the development of Storage system;
• Quite a Storage includes all our wishes to finish this job && make it perfect;
• This is Qtas :)

What's in it?

• A virtual file system supports remote managing;
• IPv6 support
• distributed storage system
• least surprising interaction surface for UNIX users
• ... still finding something cool to add

Function List

File System Operations

1. pwd：print work directory pwd [] ()
2. cd：change directory ``
3. ls：list files ``
4. cat： ``
5. cp ``
6. mv ``
7. find ``
8. chmod ``
9. sudo ``
10. rm ``
11. tree ``
12. ...

for Root users

for Normal users

Connection

1. netstat
2. QAQ

CLI

Log System

Man Page

• opRead( str ) -> list
  To analyse a command series, and split the str into list with the respect of " ". Meanwhile, formatize the operations with UNIX-Style.
• printLogo()
• printHelp()
• opSplit( str command_list ) -> operation, optional, args
• opShow(command_list)

Working Flow

• P2P 弱化了 C/S 的概念，在网络中每一个节点既可能是server，也可以是client，可以把发起请求的称为client，而接受请求的为server；
• 把整个计算机集群看作一个大的server，发起请求的时候，谁先响应谁先处理，响应一个请求后，server端广播集群，开始处理请求；
• 需要有信号量机制，保证服务器同步；

1. client向服务器广播，发起请求寻找file1

打开程序