docker使用btrfs存储驱动

ubuntu22 环境

1.dd if=/dev/zero of=btrfs.img bs=1m count=2000
2.losetup /dev/loop16 btrfs.img
3.apt install btrfs-progs
4.mkfs.btrfs -f /dev/loop16
5.mount -t btrfs /dev/loop16 /var/lib/docker
6. root@nmx-virtual-machine:/home/nmx# df -T
Filesystem Type 1K-blocks Used Available Use% Mounted on
tmpfs tmpfs 798784 2044 796740 1% /run
/dev/sda3 ext4 204793864 10625228 183692912 6% /
tmpfs tmpfs 3993904 0 3993904 0% /dev/shm
tmpfs tmpfs 5120 4 5116 1% /run/lock
/dev/sda2 vfat 524252 6220 518032 2% /boot/efi
tmpfs tmpfs 798780 92 798688 1% /run/user/1000
/dev/sr0 iso9660 129448 129448 0 100% /media/nmx/CDROM
/dev/loop16 btrfs 2048000 5920 1825792 1% /var/lib/docker

 7.配置文件

root@nmx-virtual-machine:/home/nmx# cat /etc/docker/daemon.json
{
  "storage-driver": "btrfs"
}

8. docker info 

Client:
 Version:    24.0.5
 Context:    default
 Debug Mode: false

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 24.0.5
 Storage Driver: btrfs
  Btrfs:
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version:
 runc version:
 init version:
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.5.0-21-generic
 Operating System: Ubuntu 22.04.4 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 7.618GiB
 Name: nmx-virtual-machine
 ID: 7f487ac8-8469-45d4-a55a-99b08f4ab9e9
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false