HMFS-Daisy

This is an integration for PM filesystem and memory system as a part of 863 project.

A final integrated version should be File System + Memory System + Volume Mode.

How to use

Download codes: git clone https://github.com/DDST-NVM/HMFS-Daisy.git

Install Dependencies:

sudo apt-get update  
sudo apt-get install build-essential -y  
sudo apt-get install libncurses-dev
sudo apt-get install initramfs-tools -y

Install modified linux kernel:

make menuconfig
make  -jN(N is decided by the core number in your computer)
sudo make modules_install  
sudo make install

Install File System:

sudo vim /boot/grub/grub.cfg

Add content memmap=2G\$1G in this line:linux /boot/vmlinux-3.11.0, which means 2GB memory from 1GB address is reserved for mounting filesystem.

Reboot and choose 3.11.0 kernel

Test filesystem:

cd fs/hmfs
make all 
sudo insmod hmfs.ko
mkdir ~/mnt-hmfs
sudo mount -t hmfs -o physaddr=0x40000000,init=2G,gid=1000,uid=1000 none ~/mnt-hmfs

Run mount or df -lh to certify that file system is mounted successfully or not.

If successful, you can create a file by mkdir and something like it in ~/mnt-hmfs directory.

For more info about hybrid memory file system, you can refor to this blog.

Test memory system:

make
./ptest (you can read the test program to know the control logic)
./ptest p 
./ptest m 10
./ptest b
./ptest gbd
./ptest n
./ptest gn
...