This example assumes that you have a FreeBSD 11.x running

sysrc zfs_enable="YES"

Start ZFS service

service zfs start

Configure a loopback device on the /zfs file.

dd if=/dev/zero of=/zfs bs=1M count=4000
mdconfig -a -t vnode -f /zfs

Create zfs pool

zpool create minio-example /dev/md0

df /minio-example
Filesystem    512-blocks Used   Avail Capacity  Mounted on
minio-example    7872440   38 7872402     0%    /minio-example

Verify if it is writable

touch /minio-example/testfile
ls -l /minio-example/testfile
-rw-r--r--  1 root  wheel  0 Apr 26 00:51 /minio-example/testfile

Now you have successfully created a ZFS pool for further reading please refer ZFS Quickstart Guide

However, this pool is not taking advantage of any ZFS features. So let's create a ZFS filesytem on this pool with compression enabled. ZFS supports many compression algorithms: [lzjb, gzip, zle, lz4]. lz4 is often the most performant algorithm in terms of compression of data versus system overhead.

zfs create minio-example/compressed-objects
zfs set compression=lz4 minio-example/compressed-objects

To monitor if your pools are healthy.

zpool status -x
all pools are healthy

Install Minio from FreeBSD port.

pkg install minio

Enable minio and configure minio to use ZFS volume mounted at /minio-example/compressed-objects.

sysrc minio_enable=yes
sysrc minio_disks=/minio-example/compressed-objects

Start minio.

service minio start

Now you have an Minio running on top of your ZFS backend which transparently provides disk level compression for your uploaded objects, please visit http://localhost:9000 to open Minio Browser.

In-case you wish to stop Minio service.

service minio stop