Linux 装载docker逻辑卷

我正在尝试访问docker以前使用的逻辑卷。这是各种命令的结果：

lsblk

fdisk

LV显示器

  --- Logical volume ---
  LV Name                docker-pool
  VG Name                docker
  LV UUID                piD2Wx-aDjf-CkpN-b4s4-YXWE-6ERm-GWTcOz
  LV Write Access        read/write
  LV Creation host, time ip-172-31-39-159, 2020-02-16 09:18:57 +0000
  LV Pool metadata       docker-pool_tmeta
  LV Pool data           docker-pool_tdata
  LV Status              available
  # open                 0
  LV Size                79.03 GiB
  Allocated pool data    80.07%
  Allocated metadata     31.58%
  Current LE             20232
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

但是，当我尝试装入卷

docker docker--pool\u tdata

时，出现以下错误：

mount  /dev/mapper/docker-docker--pool_tdata /mnt/test
mount: /dev/mapper/docker-docker--pool_tdata is already mounted or /mnt/test busy

我还尝试重新启动机器，卸载docker，并查看是否使用

lsof

你有没有关于如何装入该卷的线索？

---

谢谢

这看起来像是旧版本Docker中的LVM devicemapper树。即使您可以装入卷，也不会以易于提取的方式存储其中的图像和容器内容。这样做的目的只是试图理解为什么

docker info

和

docker system df

显示使用的不同空间。有人问了几个问题，但到目前为止还没有答案。

  --- Logical volume ---
  LV Name                docker-pool
  VG Name                docker
  LV UUID                piD2Wx-aDjf-CkpN-b4s4-YXWE-6ERm-GWTcOz
  LV Write Access        read/write
  LV Creation host, time ip-172-31-39-159, 2020-02-16 09:18:57 +0000
  LV Pool metadata       docker-pool_tmeta
  LV Pool data           docker-pool_tdata
  LV Status              available
  # open                 0
  LV Size                79.03 GiB
  Allocated pool data    80.07%
  Allocated metadata     31.58%
  Current LE             20232
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

mount  /dev/mapper/docker-docker--pool_tdata /mnt/test
mount: /dev/mapper/docker-docker--pool_tdata is already mounted or /mnt/test busy