Unable to install Anbox on BQ Aquaris M10 FHD

[droid001]

I've attempted to install Anbox following the steps at dailyuse/anbox but ran into an error 28: No space left on device:

phablet@ubuntu-phablet:~$ sudo apt update 
Ign:1 http://repo.ubports.com xenial InRelease           
Hit:2 http://ports.ubuntu.com/ubuntu-ports xenial InRelease
Hit:3 http://ports.ubuntu.com/ubuntu-ports xenial-updates InRelease     
Hit:4 http://repo.ubports.com xenial Release                            
Hit:5 http://ports.ubuntu.com/ubuntu-ports xenial-security InRelease    
Reading package lists... Error!                   
W: No sandbox user '_apt' on the system, can not drop privileges
E: Write error - write (28: No space left on device)
E: IO Error saving source cache
E: The package lists or status file could not be parsed or opened.

I also tested the troubleshooting instructions at the end of the page with the same results. I've got 3.5G left on the device so one would think there is sufficient space.
I checked the amount of inodes which are being used with
sudo df -i / and there were 45% used.
How can I run apt update without getting the "No space left on device" error?
Running 16.04 (OTA-13) on a BQ Aquaris M10 FHD.

[lalu]

I can confirm this issue.
output of df -h:

Filesystem                       Size  Used Avail Use% Mounted on
udev                             978M  4.0K  978M   1% /dev
tmpfs                            196M  760K  196M   1% /run
/dev/disk/by-partlabel/userdata   13G  2.5G  9.8G  20% /userdata
/dev/loop0                       2.0G  2.0G     0 100% /
/dev/loop1                       243M  231M  6.5M  98% /android/system
none                             4.0K     0  4.0K   0% /android
tmpfs                            980M  4.0K  980M   1% /etc/fstab
tmpfs                            980M  2.0M  978M   1% /var/lib/lxc/android/rootfs
/dev/disk/by-partlabel/system    1.5G  2.4M  1.5G   1% /android/cache
/dev/disk/by-partlabel/protect1  5.9M   44K  5.6M   1% /android/protect_f
/dev/disk/by-partlabel/protect2  5.9M   44K  5.6M   1% /android/protect_s
none                             4.0K     0  4.0K   0% /sys/fs/cgroup
tmpfs                            980M   16K  980M   1% /tmp
none                             5.0M     0  5.0M   0% /run/lock
none                             980M   83M  898M   9% /run/shm
none                             100M     0  100M   0% /run/user
cgmfs                            100K     0  100K   0% /run/cgmanager/fs
tmpfs                            980M     0  980M   0% /media
tmpfs                            980M     0  980M   0% /var/lib/openvpn/chroot/tmp
tmpfs                            980M     0  980M   0% /var/lib/sudo
tmpfs                            196M   40K  196M   1% /run/user/32011
tmpfs                            196M     0  196M   0% /run/user/0

The problem seems to have to do with / and /dev/loop0 but I don't know how to advance from here. Any hint is appreciated.
And thanks for all the time and effort you put into this!

[droid001]

This might be a solution in regards to increasing the partition for Android.

[doniks]

@lalu said in Unable to install Anbox on BQ Aquaris M10 FHD:

The problem seems to have to do with / and /dev/loop0 but I don't know how to advance from here. Any hint is appreciated.

I've never touched a M10, but from what you show (loop0) your root filesystem is mounted from a .img file and not from the system partition. The Nexus 7, which I have, is also like this. It is very easy to resize the .img file and get a larger root filesystem. I don't have it around right now to double check, but as far as I remember, I do this: boot to recovery, adb shell, to get into it and then resize2fs /data/ubuntu.img 4G to increase the size to 4 gigabyte . Of course, if you break it you get to keep the pieces, so make your own decisions wrt backups, and worst case fall back to reinstalling with the installer, which should always work