2014-01-12 19:03:32.326 ERROR nova.scheduler.filter_scheduler [req-697d61c5-c952-4bf8-85b9-deed6f614f44 admin gravity] [instance: 9f5447c7-6289-42ae-9718-4e9330775cf7] Error from last host: stanley (node stanley.int.gravityrd.com): [u'Traceback (most recent call last):\n', u'  File "/opt/stack/nova/nova/compute/manager.py", line 1043, in _build_instance\n    set_access_ip=set_access_ip)\n', u'  File "/opt/stack/nova/nova/compute/manager.py", line 1413, in _spawn\n    LOG.exception(_(\'Instance failed to spawn\'), instance=instance)\n', u'  File "/opt/stack/nova/nova/compute/manager.py", line 1410, in _spawn\n    block_device_info)\n', u'  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2084, in spawn\n    write_to_disk=True)\n', u'  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 3064, in to_xml\n    disk_info, rescue, block_device_info)\n', u'  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2944, in get_guest_config\n    inst_type):\n', u'  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2761, in get_guest_storage_config\n    info)\n', u'  File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 1038, in volume_driver_method\n    return method(connection_info, *args, **kwargs)\n', u'  File "/opt/stack/nova/nova/openstack/common/lockutils.py", line 246, in inner\n    return f(*args, **kwargs)\n', u'  File "/opt/stack/nova/nova/virt/libvirt/volume.py", line 289, in connect_volume\n    % (host_device))\n', u'NovaException: iSCSI device not found at /dev/disk/by-path/ip-192.168.36.120:3260-iscsi-iqn.2010-10.org.openstack:volume-995bc474-424e-4b64-8475-4bed1e628400-lun-1\n']