I am getting a "no space left on device" messages from rsync and git commit is failing

I can't figure it out... there's lots of space left.
I am using btrfs for /dev/sda7
/home/neil/.Private is ecryptfs.

neil@slim-silver ~ $ df -h
Filesystem           Size  Used Avail Use% Mounted on
udev                  10M     0   10M   0% /dev
tmpfs                1.2G  9.3M  1.2G   1% /run
/dev/sda6             68G   39G   26G  60% /
tmpfs                2.9G   43M  2.8G   2% /dev/shm
tmpfs                5.0M  4.0K  5.0M   1% /run/lock
tmpfs                2.9G     0  2.9G   0% /sys/fs/cgroup
/dev/sda5             53G   30G   23G  57% /media/durr_data
/dev/sda9            500M  5.4M  494M   2% /boot/efi
/dev/sda7            149G  119G   31G  80% /home
/dev/sda10           112G   88G   19G  83% /home/Media
/home/neil/.Private  149G  119G   31G  80% /home/neil/Private
tmpfs                580M   12K  580M   1% /run/user/1000