partitioning - Ubuntu 16.04 : Different partitions for root and home, but files in home occupy memory in both - Ask Ubuntu

when installing ubuntu 16.04 on server, created different partitions root (/) , home (/home). root partition 15gb , home 40gb. had upload large amount of files server got error message root running out of free space. found strange, because uploaded files /home partition. when checked file system saw files in /home occupy space in / , in /home though these different partitions.

i tried problem still persistent. solution problem? how make files occupy space in /home?

the output of df -h is:

udev            1,8g     0  1,8g   0% /dev tmpfs           369m   39m  330m  11% /run /dev/sda8        14g   13g  593m  96% / tmpfs           1,8g  352k  1,8g   1% /dev/shm tmpfs           5,0m  4,0k  5,0m   1% /run/lock tmpfs           1,8g     0  1,8g   0% /sys/fs/cgroup /dev/sda9        47g  7,8g   36g  18% /home tmpfs           369m   68k  369m   1% /run/user/1000 tmpfs           369m  8,0k  369m   1% /run/user/108 

the output of lsblk is:

name   maj:min rm   size ro type mountpoint sda      8:0    0 465,8g  0 disk  ├─sda1   8:1    0 136,7g  0 part  ├─sda2   8:2    0   449m  0 part  ├─sda3   8:3    0     1k  0 part  ├─sda5   8:5    0  91,4g  0 part  ├─sda6   8:6    0 168,9g  0 part  ├─sda7   8:7    0   7,5g  0 part [swap] ├─sda8   8:8    0    14g  0 part / └─sda9   8:9    0    47g  0 part /home sdb      8:16   0 111,8g  0 disk  ├─sdb1   8:17   0   100m  0 part  └─sdb2   8:18   0 111,7g  0 part  sr0     11:0    1  1024m  0 rom 

the output du --human --max-depth=2 / (only relevant parts) is:

144m    /opt/teamviewer 144m    /opt 7,4g    /root/.local 7,4g    /root 41m /var/www 106m    /var/cache 842m    /var 7,8g    /home/t-hr 7,8g    /home 207m    /lib/modules 123m    /lib/firmware 384m    /lib 54m /boot 40m /usr/sbin 250m    /usr/bin 1,1g    /usr/share 2,1g    /usr/lib 120m    /usr/src 3,6g    /usr 21g / 

how should proceed?

what you're running temp space:

depending on methodology of uploading , size of files, these files might first created in root partition in /tmp , once upload completed there, transferred /home. rebooting removes files /tmp wouldn't know what's happening...

(as don't know comes , goes to, suspect reboot , problem goes away until run out of space again , reboot again)

edit:

and don't forget clean out /root/.local :-d ;-)