ZFS on alpine linux

# install packages

apk add zfs zfs-lts

# load kernel modules
modprobe zfs
modprobe spl

# enable kernel module
echo zfs >> /etc/modules

# activate services
rc-update add zfs-import boot
rc-update add zfs-mount boot
rc-update add zfs-share boot

zpool status

# create pool with first disk
zpool create zpool /dev/sdb

# add other disks
zpool add zpool /dev/sdc

zpool status

zfs set compression=lz4 zpool

# mount if not mounted
zfs mount zpool

ll /zpool/
zpool list

# expand a disk to avail size
zpool online -e zpool /dev/sdc