Comment 24 for bug 1254890

I investigated this problem from http://logs.openstack.org/36/69236/2/check/check-tempest-dsvm-full/8820082/ .

At 2014-01-26 22:04:03.329, the following traceback is written on screen-n-cpu.txt.gz.

Traceback (most recent call last):
  File "/opt/stack/new/nova/nova/compute/manager.py", line 3844, in _attach_volume
    encryption=encryption)
  File "/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 1166, in attach_volume
    disk_info)
  File "/opt/stack/new/nova/nova/virt/libvirt/driver.py", line 1124, in volume_driver_method
    return method(connection_info, *args, **kwargs)
  File "/opt/stack/new/nova/nova/openstack/common/lockutils.py", line 249, in inner
    return f(*args, **kwargs)
  File "/opt/stack/new/nova/nova/virt/libvirt/volume.py", line 305, in connect_volume
    % (host_device))
NovaException: iSCSI device not found at /dev/disk/by-path/ip-127.0.0.1:3260-iscsi-iqn.2010-10.org.openstack:volume-6f8b43b1-5c3b-4919-8dc2-7041e0966f7d-lun-1

However "iscsiadm --login" run without any errors before the above traceback:
2014-01-26 22:03:47.496 iscsiadm -m node -T iqn.2010-10.org.openstack:volume-6f8b43b1-5c3b-4919-8dc2-7041e0966f7d -p 127.0.0.1:3260 --login

So I cannot find the cause why /dev/disk/by-path/ link did not appear.