When you receive an error message like
scp: writing /tmp/mkinitramfs_Y2BgCE/ [..] : No space left on device
check how big your tmp folder is. If it looks like
overflow 1.0M 1.0M 0 100% /tmp
your volume was probably full at a time. After you allocated new disk space umount your volume with
If you receive the error “umount: /tmp: device is busy.” run “lsof /tmp/” to see what is using it.
After umounting /tmp your system should work fine again. You can prevent /tmp from reappearing after a restart with
echo 'MINTMPKB=0' > /etc/default/mountoverflowtmp