mjhjmtu

I run out of space in the /root folder, I need to upgrade to Debian 9. But because of this problem I can not.

My this partition structure:

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931,5G 0 disk 
├─sda1 8:1 0 243M 0 part /boot
├─sda2 8:2 0 1K 0 part 
└─sda5 8:5 0 931,3G 0 part 
 ├─educacion--vg-root 254:0 0 9,3G 0 lvm /
 ├─educacion--vg-swap_1 254:1 0 7,8G 0 lvm [SWAP]
 └─educacion--vg-home 254:2 0 914,2G 0 lvm /home
sr0 

The /root folder is mapped to education-vg-root. These are my logical partitions:

lvmdiskscan
 /dev/educacion-vg/root [ 9,31 GiB] 
 /dev/sda1 [ 243,00 MiB] 
 /dev/educacion-vg/swap_1 [ 7,80 GiB] 
 /dev/educacion-vg/home [ 914,16 GiB] 
 /dev/sda5 [ 931,27 GiB] LVM physical volume
 2 disks
 2 partitions
 0 LVM physical volume whole disks
 1 LVM physical volume

If I do a df -h you can see that the root (/dev/dm-0) is full:

df -h
S.ficheros Tamaño Usados Disp Uso% Montado en
/dev/dm-0 9,1G 8,6G 46M 100% /
udev 10M 0 10M 0% /dev
tmpfs 773M 9,1M 764M 2% /run
tmpfs 1,9G 31M 1,9G 2% /dev/shm
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 1,9G 0 1,9G 0% /sys/fs/cgroup
/dev/sda1 236M 49M 175M 22% /boot
/dev/mapper/educacion--vg-home 900G 8,1G 846G 1% /home
tmpfs 387M 4,0K 387M 1% /run/user/116
tmpfs 387M 8,0K 387M 1% /run/user/1000

If I see the volume of the logical partition there is no space:

vgdisplay
 --- Volume group ---
 VG Name educacion-vg
 System ID 
 Format lvm2
 Metadata Areas 1
 Metadata Sequence No 6
 VG Access read/write
 VG Status resizable
 MAX LV 0
 Cur LV 3
 Open LV 3
 Max PV 0
 Cur PV 1
 Act PV 1
 VG Size 931,27 GiB
 PE Size 4,00 MiB
 Total PE 238405
 Alloc PE / Size 238405 / 931,27 GiB
 Free PE / Size 0 / 0 /// aca muestra que hay espacio 
 VG UUID ttIQ4H-odre-GnH5-4x11-URPm-aVeK-mb0IW1

I see that the logical partition education-vg-home has almost the entire physical space. How can you shrink it and spend space to education-vg-root?

Try using Gparted but the logical partition is blocked.

Thank you so much.