Ubuntu – “/dev/mapper/ubuntu–vg–root”


I installed Ubuntu 14.04 recently.
During the installation I did not create a separate partition for my home folder.
I also accidentally encrypted my home folder.
When i did

sudo df

I got the result as

Filesystem                   Size  Used Avail Use% Mounted on
/dev/mapper/ubuntu--vg-root  455G  181G  251G  42% /

Why does this have a funny name instead of a normal '/dev/sdx'?

Please explain to me what this is?

Best Answer

The /dev/mapper/ubuntu--vg-root in place of a traditional /dev/sdxN block device just indicates that you chose to install the system using LVM2 logical volume management. See What is LVM and what is it used for?

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