Shrink/Reduce/Resize LVM with Swap on Xubuntu 14.04 Trusty LTS
You are Welcome! The Tutorial Shows You Step-by-Step How to Reduce/Shrink/Resize a LVM/LVM2 Volume to Free Up Space on Xubuntu 14.04 Trusty Tahr LTS i386/amd64 Linux Desktop.
After to have Shrinked the LVM Logical Volume to FREE up Space You will Need also to Reduce the Physical LVM Volume!

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Boot System with Ubuntu (Kubuntu/Lubuntu/Xubuntu) Live Media.
How to Create a Live Ubuntu Media
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Open Terminal Window
Ctrl+Alt+t
(Press “Enter” to Execute Commands) -
Find the LVM Volume Name to Shrink
sudo su && lvmdiskscan
It will be of the Form: /dev/my-vg/my-lv
And if it’s the Root Volume it should Contains the ‘root’ Keyword… -
Shrinking/Reducing a LVM Volume on Xubuntu.
Specifing the Final Size:
lvreduce --resizefs --size 100G /dev/my-vg/my-lv
or Specifing the Amount to Take Off:
lvreduce --resizefs --size -50G /dev/my-vg/my-lv
The ‘–resizefs‘ Flag is Fundamental in Succeeding because First, as needed it will Resize the File System.
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How to Shrink the LVM Physical Volume to Free Up Space
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