Docker 没有重命名卷的命令

$ docker volume
Usage:  docker volume COMMAND

Manage volumes

Commands:
  create      Create a volume
  inspect     Display detailed information on one or more volumes
  ls          List volumes
  prune       Remove unused local volumes
  rm          Remove one or more volumes

Run 'docker volume COMMAND --help' for more information on a command.

重命名卷，将旧的卷内容复制到新卷

# 创建新卷
docker volume create dify-mysql-data

# 查看有那些卷
docker volume ls

# 查看新卷的存储位置
docker volume inspect dify-mysql-data

# 使用临时容器复制数据
docker run --rm \
  -v af7083fa0b5fa16352e604579020cfb6cee28eab52c09ad2ee3cc886ad76818d:/source \
  -v dify-mysql-data:/dest \
  alpine \
  sh -c "cp -a /source/. /dest/"

# 验证新卷内容 docker volume inspect dify-mysql-data 返回的  Mountpoint 路径
ll /var/lib/docker/volumes/dify-mysql-data/_data

docker compose yaml 引用新卷

volumes:
    dify-mysql-data:
      name: dify-mysql-data
      external: true

重新加载配置 docker compose up -d