Why results are different by using these tools on Logical Volume ?
Using Gnome Disks
Size: 14 GB — 1.4 GB free (90.3% full)
Using Dolphin File Manager
Using df Command
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/UmrVolumeGroup-LV_root ext4 14G 12G 654M 95% /
total - 14G 12G 654M 95% -
I have single SSD , having three logical volumes home, swap and root. Trying to extend root LV, command finished successfully but got inconsistent results.