How to fix Error starting daemon: error initializing graphdriver: overlay2 not supported over xfs with backing filesystem in Docker

# Check the XFS filesystem where Docker data is stored
xfs_info /var/lib/docker

# Or check the root filesystem if Docker uses it
xfs_info /

docker info | grep "Supports d_type"

# Check filesystem type and mount options
df -T /var/lib/docker

# Check all XFS filesystems
mount | grep xfs

# Check which device hosts /var/lib/docker
findmnt /var/lib/docker

# Stop Docker
sudo systemctl stop docker

# Back up existing Docker data (optional, if you have images to save)
sudo mv /var/lib/docker /var/lib/docker.bak

# Identify a disk or partition to use (example: /dev/sdb1)
# Create XFS filesystem WITH ftype=1
sudo mkfs.xfs -n ftype=1 /dev/sdb1

# Create mount point and mount
sudo mkdir -p /var/lib/docker
sudo mount /dev/sdb1 /var/lib/docker

# Add to /etc/fstab for persistence
echo '/dev/sdb1 /var/lib/docker xfs defaults 0 0' | sudo tee -a /etc/fstab

# Start Docker
sudo systemctl start docker

# Stop Docker
sudo systemctl stop docker

# Create a file to use as the backing store (adjust size as needed)
sudo dd if=/dev/zero of=/docker-storage.img bs=1G count=50

# Create XFS filesystem with ftype=1
sudo mkfs.xfs -n ftype=1 /docker-storage.img

# Back up and remove old Docker data
sudo mv /var/lib/docker /var/lib/docker.bak

# Mount the loopback device
sudo mkdir -p /var/lib/docker
sudo mount -o loop /docker-storage.img /var/lib/docker

# Add to /etc/fstab
echo '/docker-storage.img /var/lib/docker xfs loop 0 0' | sudo tee -a /etc/fstab

# Start Docker
sudo systemctl start docker

# Stop Docker
sudo systemctl stop docker

# Back up existing Docker data
sudo mv /var/lib/docker /var/lib/docker.bak

# Format partition with ext4 (example: /dev/sdb1)
sudo mkfs.ext4 /dev/sdb1

# Mount the new filesystem
sudo mkdir -p /var/lib/docker
sudo mount /dev/sdb1 /var/lib/docker

# Add to /etc/fstab
echo '/dev/sdb1 /var/lib/docker ext4 defaults 0 0' | sudo tee -a /etc/fstab

# Start Docker
sudo systemctl start docker

# Stop Docker
sudo systemctl stop docker

# Configure Docker to use devicemapper (deprecated, temporary workaround only)
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<EOF
{
  "storage-driver": "devicemapper"
}
EOF

# Remove old Docker data (required when changing storage drivers)
sudo rm -rf /var/lib/docker/*

# Start Docker
sudo systemctl start docker

# Check Docker daemon status
sudo systemctl status docker

# Verify storage driver and d_type support
docker info | grep -E "Storage Driver|Backing Filesystem|Supports d_type"

# Run a test container
docker run --rm hello-world

Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true

# If you saved images using docker save
docker load < my-images-backup.tar

# If you need to re-pull images from a registry
docker pull your-image:tag