simulation of log structured file system
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
LICENSE
Makefile
README.md
logfs.cpp
logfs.h

README.md

logfs

simulation of log structured file system

Build instructions

  • Run make to compile and generate logfs binary
  • ./logfs to run the program

Commands

  • First two commands should set disk capacity and allowed block size once in following order.

Set disk capacity: size is integer and units are MB or GB or TB.

Eg: diskCapacity(5GB) Output: Disk Size set to: 5GB

diskCapacity(<size> <MB|GB|TB>)

Set block size: size is an integer and units are KB or MB. Eg: blockSize(4KB) Output: Block Size set to: 4KB Number of Blocks: 1310720

Block size cannot exceed disk capacity

blockSize(<size> <KB|MB>)
  • Rest of the commands can be used any number of times and can follow any order

Create directory: To create dir with one or more paths. Eg: mkdir(hello,world) Output: Created directory: /hello/ Created directory: /world/

Paths can be absolute or relative

mkdir(<path> {, <path>})

Change directory: To set current dir to a given path. Eg: chdir(hello) Output: Current dir: /hello/

chdir(<path>)

Write a file: To allocate memory to a file. file is string file name, size is integer followed by units Eg: write(magic,10MB) Output: /hello/magic, 3, 0x0, 10240KB Displays: file name, file id, memory address, file size

Defragmentation is performed if continuous memory is not available.

write(<file>, <size> <B|KB|MB|GB>)

Read file info: Shows file name, file id, memory address, file size Eg: read(magic) Output: /hello/magic, 3, 0x0, 10240KB

read(<file>)

Notes

  • Current directory starts with the root /
  • Syntax is strictly checked.
  • Paths can be relative or absolute.