compact not compacting

[root@provision-host0 ~]# curl -X POST http://localhost:5984/chef/_compact
{"ok":true}
[root@provision-host0 ~]# curl -X GET http://localhost:5984/chef/
{"db_name":"chef","doc_count":91,"doc_del_count":3,"update_seq":111892,"purge_seq":0,"compact_running":false,"disk_size":6968516608,"instance_start_time":"1273828014785219","disk_format_version":4}

couchdb -V

[root@provision-host0 couchdb]# couchdb -V
couchdb - Apache CouchDB 0.10.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.

disks all entirely full

Filesystem                  Size  Used Avail Use% Mounted on
/dev/xvda2                  677M  410M  233M  64% /
/dev/mapper/system-var      20G  9.7G  9.3G  51% /var
/dev/mapper/system-home     992M   34M  908M   4% /home
/dev/mapper/system-vartmp   124M  5.6M  113M   5% /var/tmp
/dev/mapper/system-usr      2.0G  1.2G  729M  62% /usr
/dev/mapper/system-tmp      496M   20M  451M   5% /tmp
/dev/xvda1                   99M   20M   74M  22% /boot
tmpfs                       256M     0  256M   0% /dev/shm