####### In the PVE host #######

# Create LV for Docker storage
lvcreate -L <size_in_gb>G -n vm-<vmid>-disk<disk_id> vg_<pve_node_vg>
OR
lvcreate -l 100%FREE -n vm-<vmid>-disk<diskid> vg_<pve_node_vg>

# Attach to VM
qm set <vmid> --scsi<docker_disk_id> ha-lvm:vm-<vmid>-disk-<docker_disk_id>,cache=writeback,discard=on,iothread=1,ssd=1

# For databases, do NOT use writeback cache (can corrupt/lose data if node or vm crashes)
qm set <vmid> --scsi<db_disk_id> ha-lvm:vm-<vmid>-disk-<db_disk_id>,cache=writethrough,discard=on,iothread=1,ssd=1

# Restart
qm stop <vmid> && qm start <vmid>

####### In the VM #######
lvcreate -l 100%FREE -n lv_<name> vg_<name>

sudo mkfs.xfs /dev/sdb1

sudo mkdir -p /docker-data
sudo mount /dev/sdb1 /docker-data

# Find UUID
sudo blkid /dev/sdb1

# Add to fstab
UUID=916202b1-c576-4fb8-acca-a72ac73320bf /docker-storage xfs defaults 0 0

####### Move old data #######
sudo mkdir -p /docker-storage/docker
sudo systemctl stop docker

# Move old data
sudo mv /var/lib/docker /var/lib/docker.bak

# Symlink or use daemon.json
sudo ln -s /docker-data/docker /var/lib/docker

# OR use /etc/docker/daemon.json
echo '{ "data-root": "/docker-data/docker" }' | sudo tee /etc/docker/daemon.json

sudo systemctl start docker