garfield96/sqlfs

Rust In-Memory Filesystem

SQLFS

A basic simple filesystem using a database as backend store.

Build Docker Image

docker build -t sqlfs docker/

Run Docker

docker run --device /dev/fuse \
           --cap-add SYS_ADMIN \
           --security-opt apparmor:unconfined \
           --rm -it -v $(pwd):/sqlfs sqlfs

In case this command does not work, use --privileged flag (see also https://stackoverflow.com/a/49021109)

Dependencies

SQLite

$ apt-get install sqlite3 sqlite3-pcre

FUSE

Set up FUSE:

$ apt-get install fuse libfuse-dev

# Make sure fuse.conf has allow_root and user_allow_other set:
$ cat /etc/fuse.conf
allow_root
user_allow_other

Run

Test the system:

mkdir /tmp/test
RUST_LOG=trace cargo run --bin fuse /tmp/test

Unmount:

$ umount /tmp/test

Testing with filebench

Installing filebench (https://github.com/filebench/filebench):

sudo apt-get install bison flex
git clone https://github.com/filebench/filebench.git
libtoolize
aclocal
autoheader
automake --add-missing
autoconf
./configure
make

Running a benchmark:

mkdir -p /tmp/fbtest
cargo run --release --bin fuse -- /tmp/fbtest/ &

sudo sh -c "echo 0 > /proc/sys/kernel/randomize_va_space"
./filebench -f randomrw.f

umount /tmp/fbtest