# 附錄

## **docker使用 btrfs 檔案系統**

**停止Docker。**

**將內容複製/var/lib/docker/到備份位置，然後清空以下內容/var/lib/docker/：**

**sudo cp -au /var/lib/docker /var/lib/docker.bk**\
**sudo rm -rf /var/lib/docker/\***\ <br>

**使用gparted將專用塊設備格式化為Btrfs文件系統。此示例假定您使用兩個名為/dev/sda2。這是一種破壞性操作。**

<img src="https://lh6.googleusercontent.com/WMTAHb2Gu7cgaC_0p1ykzkNCA7A5pEth404Blmk3oT9vtPPyKnjVyaC0G-yA6l2kXUJrdUHZqZoJ6LGSlEf-HCPGc5jO7nMlerPzbcBt_rhcge7NHjDkTXGIR0Xfug31LOoU5G_a" alt="" data-size="original">

**Btrfs還有更多選項，包括條帶化和RAID。請參閱** [**Btrfs文檔**](https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices)**。**

**在/var/lib/docker/掛載點上掛載新的Btrfs文件系統。您可以指定用於創建Btrfs文件系統的任何塊設備。**

**sudo mount -t btrfs /dev/sda2 /var/lib/docker**\ <br>

**不要忘記通過添加條目來重新啟動更改/etc/fstab。**

**複製的內容/var/lib/docker.bk來/var/lib/docker/。**

**sudo cp -au /var/lib/docker.bk/\* /var/lib/docker/**

**配置Docker以使用btrfs存儲驅動程序。即使/var/lib/docker/現在使用Btrfs文件系統，這也是必需的。編輯或創建文件/etc/docker/daemon.json。如果是新文件，請添加以下內容。如果它是現有文件，則僅添加鍵和值，如果它不是結束花括號（}）之前的最後一行，則小心使用逗號結束該行。**

**{"storage-driver":"btrfs"}**

**啟動Docker。運行後，請驗證是否將btrfs其用作存儲驅動程序。**

```
docker info

Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 17.03.1-ce
Storage Driver: btrfs
 Build Version: Btrfs v4.4
 Library Version: 101
```

## **開機啟動**

**blkid /dev/sda2**

**vi /etc/fstab**

```
UUID=0a6d0b62-b798-42f0-9428-441a2898e7e5 /var/lib/docker btrfs defaults 0 0

```

<br>


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