It seems I can create volumes but not attach them; the Horizon UI just hangs on 'Attaching'

Here is my cinder server logs: http://pastebin.mozilla.org/3301063

Controller server logs: http://pastebin.mozilla.org/3301103

controller server runs cinder-scheduler & backup server runs cinder-volume & cinder backup;

[root@backup01 ~]# cinder-manage service list
2013-10-20 16:01:58.088 3439 DEBUG cinder.openstack.common.lockutils [req-9f0a6ca6-16de-404a-aa89-8682791dbf2a None None] Got semaphore "dbapi_backend" for method "__get_backend"... inner /usr/lib/python2.6/site-packages/cinder/openstack/common/lockutils.py:191
Binary           Host                                 Zone             Status     State Updated At
cinder-scheduler cp                                   nova             enabled    :-)   2013-10-20 23:01:52
cinder-volume    backup01                             nova             enabled    :-)   2013-10-20 23:01:49
cinder-backup    backup01                             nova             enabled    :-)   2013-10-20 23:01:55

LVM Volumes are in fact created;

[root@backup01 ~]# lvscan
  ACTIVE            '/dev/vg_backup01/lv_root' [2.71 TiB] inherit
  ACTIVE            '/dev/vg_backup01/lv_swap' [31.51 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-15a1d025-fe66-472d-b6a5-c2535fe440e1' [25.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-dbc5c8b3-9149-4bd6-a8bd-c4edf6fd87fc' [20.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-13d93e75-42f5-404b-b9e1-63fa6b6e5272' [20.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-0f19bd55-4270-4e4a-8bdf-416fe8d0d216' [20.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-48de67e7-5637-48de-942b-6b8037f4aebb' [4.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-adb15f94-521a-4a4f-bec1-7a8ef592b646' [25.00 GiB] inherit
  ACTIVE            '/dev/vg_backup01/volume-77982c92-7f4c-468e-9bda-c1615a6cbe36' [160.00 GiB] inherit

Any tips would be appreciated!