1. hard disk formatting

  • View new disk

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    fdisk -l

Usually, the name of the second hard disk will be /dev/sdb.

  • Disk partition

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    fdisk /dev/sdb

There will be a prompt to enter the following parameters.

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command (m for help):n
Partition number(1-4):1
First cylinder (1-22800,default 1):Enter
command (m for help):w

  • Format the disk as ext4

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    mkfs.ext4 /dev/sdb

  • Mount the disk to the specified directory

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    mkdir /data
mount -t ext4 /dev/sdb /data

  • Auto-mount directory on boot

    First find the UUID of the device.

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    blkid |grep /dev/sdb

/dev/sdb: UUID="328a9d32-abb6-492a-aabe-b6a63583674d" TYPE="ext4"

    Edit /etc/fstab to add a new mount entry.

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    vim /etc/fstab 

UUID=328a9d32-abb6-492a-aabe-b6a63583674d /dev/sdb ext4 defaults 0 0

2. Migrating Docker Storage

  • Suspend Docker

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    systemctl stop docker

  • Mobile Docker Storage Data

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    mv /var/lib/docker /data/

  • Create a new link

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    ln -s /data/docker /var/lib/docker

  • Restart Docker

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    systemctl start docker