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I just got a new ubuntu 18.04 server with two hard drives of 4TB each, with RAID. Ubuntu was set up automatically on it. Looking at it now, I see this:

root@host ~ # lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
sda       8:0    0  3.7T  0 disk
├─sda1    8:1    0   32G  0 part
│ └─md0   9:0    0   32G  0 raid1 [SWAP]
├─sda2    8:2    0  512M  0 part
│ └─md1   9:1    0  511M  0 raid1 /boot
├─sda3    8:3    0    2T  0 part
│ └─md2   9:2    0    2T  0 raid1 /
├─sda4    8:4    0  1.7T  0 part
│ └─md3   9:3    0  1.7T  0 raid1 /home
└─sda5    8:5    0    1M  0 part
sdb       8:16   0  3.7T  0 disk
├─sdb1    8:17   0   32G  0 part
│ └─md0   9:0    0   32G  0 raid1 [SWAP]
├─sdb2    8:18   0  512M  0 part
│ └─md1   9:1    0  511M  0 raid1 /boot
├─sdb3    8:19   0    2T  0 part
│ └─md2   9:2    0    2T  0 raid1 /
├─sdb4    8:20   0  1.7T  0 part
│ └─md3   9:3    0  1.7T  0 raid1 /home
└─sdb5    8:21   0    1M  0 part

I'd prefer /home to have almost all the space that now sits in '/' (root), as that's where all the websites etc will be in.

How do I do that using the command line? Do I have to make the changes on both disk or does that happen automagically?

Thank you!

Lex Thoonen
  • 93

1 Answers1

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One way is this:

You could create a directory under / like so:

sudo mkdir /free_space

Then, create a directory under your home directory like so:

mkdir ~/free_space

Then bind the /free_space directory to ~/free_space directory like so:

sudo mount --bind /free_space ~/free_space

This way all the free space on / will be accessible under ~/free_space

Another way would be to use aufs to merge /free_space with your home directory.

Raffa
  • 32,237