So the error message on an rsync was: rsync: write failed on "/var/tmp/tmpw_wbz3": No space left on device (28) rsync error: error in file IO (code 11) at receiver.c(389) [receiver=3.1.0] * Rsync has reported that there is a File IO error. Normally * this means your disk is full, but can be caused by corruption * on the filesystem that contains repository 'gentoo'. Please investigate * and try again after the problem has been fixed. * Location of repository: '/usr/portage' emergelog(): [Errno 28] No space left on device And the snippet from mount: /dev/mapper/main-var on /var type ext4 (rw,noatime,commit=0) /dev/mapper/main-portage on /usr/portage type ext4 (rw,noatime,commit=0) And the snippet from df -h: /dev/mapper/main-var 24G 24G 0 100% /var /dev/mapper/main-portage 14G 4.6G 8.5G 35% /usr/portage As you can see the wording on the error message is wrong. I wasn't out of space for my portage repo but was out of space for /var/tmp (oh webkit you are the bane of my disk space).