Operating Systems and Networks

Course Project - Network File System (NFS)

Team - 2:

Raveesh (2022114002)

Saketh (2022114014)

Abraham Paul (2022114007)

Vivek Hruday (2022114012)

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Assumptions

1. CREATE command cannot create any directories at level zero, it at least has to specify one directory in which it wants to create a file or directory.
2. Do not input an initial slash in the path.
3. When we are sending a folder it must end with a slash.
4. We assume that none of the files or folders in a storage server are empty.
5. When a Storage Server goes offline, we will wait 15 seconds to issue redundancy commands.
6. Port number is constant for different storage servers.

File structure

client/ contains all the files related to clients:

• client.h contains all the declarations of the functions and global variables used.
• client.c contains all the functions and their implementations used.
• main.c contains implementation of the main function and some of the helper functions.

common/ contains only one file common.h which has declarations and global variables that are used commonly across all three components.

naming_server/ contains all the files related to the naming server:

• lru.c has implementations of the LRU cache.
• online.c contains implementations for checking if all the storage servers are online periodically.
• trie.c contains implementation of the trie for efficient searching and also some of the helper functions.
• naming_server.c contains implementations of the functions used across the naming server.
• naming_server.h holds the function definitions of the functions in this folder.
• main.c contains the main function of this modular code.

storage_server/ contains all the files related to storage server:

• storage_server.ccontains all the implementations of the functions used across this folder.
• storage_server.h contains the declarations of the functions that are implemented in storage_server.c.
• main.c contains the main function of this modular code.

To run the code

Open different terminals for different servers and clients.

For a naming server, run:

cd ./naming_server
gcc *.c
./a.out

The above prints out the IP address and different port numbers for client and storage server

For a client, run:

cd ./client
gcc *.c
./a.out <Naming Server IP> <Naming Server Port>

For a storage_server, run:

cd ./storage_server
gcc *.c
./a.out <Naming Server IP> <Naming Server Port> <Path to directory of storage server>